A practical guide to using operating history and realistic sales projections to plan profit and cash
A useful laundromat budget answers two questions: What should the store earn, and will it have enough cash when bills come due? Your profit and loss statement helps answer the first question. Your balance sheet supplies the starting point for the second. Put them together with a monthly sales forecast and a schedule of payments, and you can make better decisions about staffing, repairs, equipment, and owner withdrawals.
The most dependable approach is to start with verified history, adjust for changes you can explain, and test what happens if sales disappoint. A sales goal can motivate your team, but the spending budget needs a forecast supported by evidence.
This guide uses a fictional laundromat and simple dollar amounts. The examples, weighting percentages, expense ratios, and cash reserve target are teaching tools, not laundromat industry averages or required accounting standards. The main worked example uses accrual accounting and excludes entity income tax; the owner’s personal income taxes would be planned through owner distributions. Adapt the treatment to your business structure with your accountant.
1 Understand what each financial statement contributes
The profit and loss statement, often called the P&L or income statement, shows revenue, expenses, and profit over a period. The balance sheet, or BS, shows assets, liabilities, and owner equity on a particular date. A cash flow forecast estimates when money will actually enter and leave the business. These reports serve different purposes and should agree with one another. [1]
| Report | What it tells a laundromat owner | How it helps the budget |
| Profit and loss statement | Sales and expenses during a month or year | Establishes the operating starting point |
| Balance sheet | Cash, equipment, unpaid bills, loans, and equity on a date | Identifies resources and obligations entering the budget period |
| Cash flow forecast | Expected collections and payments by month or week | Shows whether cash will cover commitments |
For example, your P&L might show a $5,200 monthly profit while your cash balance falls. You could have purchased a washer, repaid loan principal, collected less than you billed, or taken money out of the business. Those cash movements do not all appear as current operating expenses. The worked example later in this article shows exactly how that happens.
Build all three views for the next 12 months. The SBA recommends connecting projected income statements, balance sheets, cash flow statements, and capital expenditure budgets, with more detailed monthly or quarterly projections for the first year. [2]
2 Gather and clean the financial history
Begin with at least 12 complete months of monthly P&Ls. If available, use 24 to 36 months to identify patterns and unusual periods. Also gather the latest balance sheet, prior year end balance sheets, bank reconciliations, loan statements, utility bills, payroll records, your lease, and planned equipment purchases.
For sales, collect machine meter readings, coin collection records, card or app reports, wash and fold sales, commercial customer invoices, and vending reports. Separate revenue streams when their prices, demand, or costs differ. An extra dollar of self service laundry revenue may require different labor than an extra dollar of wash and fold revenue.
Before forecasting, check these items:
- Reconcile bank balances and explain differences between recorded sales, collections, and deposits. A bank deposit may include a loan or owner contribution, so it is not automatically sales.
- Record merchant fees separately if your reports show gross sales but processors deposit net amounts. Keep the same treatment throughout the budget.
- Count coin and change funds consistently. Moving money from a machine or change bank to a checking account is a transfer, not another sale.
- Review prepaid customer card balances with your bookkeeper. Cash loaded before laundry services are used can create a liability under accrual accounting; avoid counting both the load and the later redemption as revenue.
- Remove personal expenses from operating categories and correct equipment purchases or loan principal mistakenly posted as ordinary expenses.
- Match utility and payroll costs to the correct periods where practical. One month with two utility payments can distort a cash basis P&L.
Use the same categories in your budget as in your bookkeeping reports. The SBA’s forecasting guidance emphasizes aligning forecasts with actual reporting categories and separating units sold from prices where useful. [3]
Normalize unusual months without erasing real risks
Normalization means adjusting history so it better represents the conditions you expect. Suppose a temporary water main shutdown closed the store for one week. Keep the actual sales in your records, but separately estimate what the month might have produced without that closure. Document the adjustment and why a repeat is unlikely.
Do not remove every bad month. A recurring sewer backup, frequent machine downtime, or seasonal slowdown belongs in the forecast until you have evidence it has been corrected. Similarly, a large repair may be unusual for one machine but normal for an aging fleet. Review several years of repairs before reducing that budget.
Keep an assumptions log with four columns: the budget item, the historical amount, the proposed adjustment, and the evidence. A signed rent increase has stronger support than an expectation that a new sign will attract customers.
Keep the accounting basis consistent
If your P&L is prepared on a cash basis, do not add accrual adjustments to it mechanically. You could count a payment twice. Ask your bookkeeper to identify what the report already includes, or build the cash budget directly from expected receipts and payments. The profit to cash example below assumes accrual records so the timing adjustments are visible.
3 Understand cash and accrual accounting before committing money
Your accounting method determines when income and expenses appear on the P&L. Your cash budget determines whether money will be available when you need to pay a bill. You can keep accrual books and still require every spending decision to pass a cash availability test.
Under cash accounting, income is generally recognized when received and expenses when paid, subject to rules for items such as capital purchases. Under accrual accounting, revenue is generally recognized when earned and expenses when incurred, even if payment happens later. The IRS explains these broad distinctions for tax reporting; tax rules and financial reporting rules can differ, particularly for advance payments. [8]
Suppose you complete $1,000 of laundry work for a local salon in March and collect payment in April. Under a simple accrual example, March shows $1,000 of revenue and an account receivable. Under a simple cash basis example, the income appears in April. In either case, that invoice supplies no March cash to pay employees. The March cash budget must reflect the actual collection timing.
Accrual accounting does not mean recording hoped for sales as actual revenue. A prospective commercial account that might buy $1,000 of laundry service next month is a forecast opportunity. It has not yet produced earned revenue or cash. Keep it out of actual results and clearly identify its uncertainty in the forecast.
Separate money earned money received and hoped for sales
The phrase “unearned revenue” has a specific accounting meaning. In accrual financial reporting, it commonly refers to customer payments received before the business has provided the service. It is generally recorded as a liability until earned. That is different from an unpaid invoice for completed work, and different again from sales that may never happen.
| Situation | What it means | Cash budgeting treatment |
| Completed laundry work awaiting payment | Earned revenue and a receivable under accrual accounting | Forecast collection when realistically expected and assess nonpayment risk |
| Customer pays before laundry service is provided | Cash received with a remaining service obligation | Count the receipt once and budget the cost of future service and possible refunds |
| Possible new customer or unsigned order | Potential future sales with no completed service or receipt | Keep unsupported sales out of the base spending plan and test them separately |
For example, a customer prepays $500 for future wash and fold orders. Your bank balance rises by $500, but you still owe the customer laundry service. Set aside enough cash in your plan to cover the related labor, supplies, utilities, and any applicable refund exposure. When the customer uses the credit, recognize the earned revenue as appropriate without counting another $500 cash receipt. A bookkeeping liability is not automatically a requirement to hold the entire payment in a separate account, but it represents an obligation your cash plan must respect.
Build the spending plan around collectible cash
Start with reconciled cash actually on hand. Identify restricted funds, essential change funds, and money earmarked for upcoming obligations. Then add expected collections by week or month, supported by operating history and customer payment behavior. Cash forecasting guidance specifically identifies how quickly customers pay as a forecasting input. [9]
For self service customers, much of the collection may occur close to the service date, but processor settlement delays, refunds, and fees can still affect available cash. For commercial accounts, review unpaid invoices by age, payment history, disputed balances, and promised payment dates. An invoice due on the 15th should not automatically be treated as cash on the 15th if that customer routinely pays a month late.
Use three different treatments for uncertainty. Move a late but collectible invoice to its realistic payment period. Reduce or exclude a doubtful collection from the base cash plan and let your accountant assess the corresponding allowance or write off. Keep speculative new sales in a separate upside scenario until there is enough evidence to support their inclusion. Do not simply shift an amount you expect never to collect into a later month.
A simple example of profit that cannot yet pay the bills
This separate illustration uses smaller figures than the main worked budget. Suppose the store expects to earn $10,000 this month, but $2,000 will be billed to commercial customers and collected next month. Current month customer receipts are therefore only $8,000. There are no collections from older invoices, customer prepayments, or other receipts in this example.
With $3,000 of opening cash and $9,000 of scheduled payments, closing cash is $3,000 + $8,000 − $9,000 = $2,000. Using the full $10,000 of projected earned revenue as if it were collected would incorrectly show $4,000 of closing cash. That $2,000 difference could lead the owner to approve an equipment purchase the store cannot yet afford.
Now suppose a possible new account could generate another $2,000 of receipts. Assigning it a 50% forecast weight adds $1,000 to an expected value calculation, but does not put $1,000 in the bank. If this is one indivisible order, the outcome may be the full $2,000 or nothing. Test the no order case before committing payroll, debt payments, or an owner distribution that depends on it. Budget any delivery costs too.
Keep a profit plan and a cash spending limit
Continue using the P&L budget to evaluate whether prices cover costs and whether the store is profitable. Use the cash forecast to decide when spending is affordable. A cash forecast can include future receipts; it should not be limited to cash already received. Those receipts need realistic timing and evidence, with a downside case for important uncertainties.
Make optional purchases and owner distributions conditional on cash actually being available after obligations and the minimum reserve are covered. Reconcile collections to the bank regularly and update the forecast when customers miss payment dates. Even a cash basis P&L is not a complete cash budget because debt principal, equipment payments, owner withdrawals, and financing also change cash.
4 Use the balance sheet to identify your starting obligations
Read the balance sheet before deciding how much cash is available for growth. Cash already needed for payroll, taxes, vendor bills, or loan payments cannot also fund a new equipment purchase.
Here is the fictional store’s balance sheet at the start of the budget month. Equipment is shown at its recorded cost less accumulated depreciation, called net book value.
| Balance sheet item | Opening balance |
| Cash | $20,000 |
| Accounts receivable | $2,000 |
| Supplies on hand | $1,000 |
| Prepaid expenses | $3,000 |
| Equipment net of depreciation | $74,000 |
| Total assets | $100,000 |
| Accounts payable | $4,000 |
| Previously recorded taxes payable | $1,000 |
| Loans outstanding | $45,000 |
| Owner equity | $50,000 |
| Total liabilities and equity | $100,000 |
Accounts receivable means customers owe the store money. Accounts payable means the store owes suppliers. Prepaid expenses are amounts already paid for future benefits, such as insurance. Equity is the accounting residual after liabilities are deducted from assets; it is not another cash account. Assets must equal liabilities plus equity. [1]
Turn each relevant balance into a schedule. When will customers pay the $2,000 they owe? When are the $4,000 of supplier bills due? What portion of the loan payment is principal, and what portion is interest? Are taxes payable next week or later? Use due dates, not just the totals.
For a detailed balance sheet, split the loan balance between principal due within the coming year and longer term debt. The example combines them for readability; the payment schedule still needs the full detail. Also inspect security deposits, lease obligations, credit cards, customer deposits, and any other material balances your actual business has.
Equipment’s book value does not tell you its replacement cost or remaining reliability. Prepare a separate equipment list showing age, condition, expected replacement date, installed replacement cost, and any financing assumption. Include delivery, plumbing, electrical work, installation, and downtime when relevant.
5 Build a sales forecast from known history
Forecast each month and revenue stream before adding the annual total. Avoid dividing last year’s annual sales by 12 unless the store has a genuinely even monthly pattern. School schedules, weather, local events, and the number of operating days can affect an individual location differently.
Start by comparing the month you are forecasting with the same month in prior years. Also examine recent results against those same months a year earlier. Comparing a busy winter month with a slow summer month can make normal seasonality look like growth.
Weight recent history when it is more representative
Suppose adjusted January sales were $18,000 three years ago, $20,000 two years ago, and $22,000 last year. You could give the newest January the greatest weight:
| Historical January | Sales | Example weight | Weighted amount |
| Three years ago | $18,000 | 20% | $3,600 |
| Two years ago | $20,000 | 30% | $6,000 |
| Last year | $22,000 | 50% | $11,000 |
| Historical baseline | 100% | $20,600 |
The calculation is ($18,000 × 20%) + ($20,000 × 30%) + ($22,000 × 50%) = $20,600. This is a forecast starting point, not a record of actual sales.
Use this approach when all three periods remain reasonably comparable. If you permanently expanded the store or changed prices significantly, older revenue may understate today’s operation. Where possible, compare paid cycles or pounds and apply current prices. If last January was distorted by a temporary closure, correct that distortion before assigning it the largest weight.
These 20%, 30%, and 50% weights are illustrative. There is no universal best weighting. A stable store may do well using last year’s same month alone. A steadily changing store may need more recent evidence. Test the method against past months rather than choosing weights because they produce the sales number you want.
Separate price changes from changes in volume
For self service washing, estimate paid cycles by machine size and multiply by the average realized price. For dryers, use paid time blocks or recorded dryer revenue with a documented usage assumption. For wash and fold, use pounds processed times the average realized price per pound. Deduct discounts and refunds consistently.
For one group of washers, 1,000 paid cycles at $5 produce $5,000. A price increase to $5.25 with unchanged volume produces $5,250. If volume falls 4% to 960 cycles, revenue is $5,040. A 5% price increase therefore does not automatically produce 5% more revenue.
Check capacity too. A forecast requiring more cycles than available machines and opening hours can support needs revision. Check busy periods, downtime, labor coverage, and folding capacity, rather than relying only on a daily average.
6 Decide how much weight to give projected growth
Known history and projected sales are not competing accounting records. History is evidence; the forecast is your estimate of a future period. The practical question is how much confidence to place in changes that history has not yet captured.
Two simple methods can help. Choose one for a particular forecast so you do not count the same improvement twice.
Method A Blend two forecasts for the same month
Suppose a history based forecast for next month is $20,000. A separate forecast built from expected cycles, prices, and customer demand is $25,000. Both must cover the same month, services, and pricing assumptions before you combine them.
Budgeted sales = historical forecast × history weight + operating forecast × projection weight.
At 60% history and 40% operating projection, budgeted sales are ($20,000 × 60%) + ($25,000 × 40%) = $22,000. That $22,000 will be the sales figure in the worked budget below. The earlier January example illustrates a different calculation and is not an additional adjustment to this amount.
The projection needs evidence beyond a sales goal. You might use early results from a service launch, documented customer orders, and available machine capacity. If $25,000 is simply what you hope to sell, blending it with history does not make it reliable.
| Situation | Illustrative history weight | Illustrative projection weight |
| Reliable history and limited evidence of change | 80% | 20% |
| Several supported changes with some uncertainty | 60% | 40% |
| Major operating change with reliable new operating data | 30% | 70% |
These are examples of judgment, not validated industry recommendations or probabilities of success. Forecasting research supports combining forecasts, but it does not establish these particular weights for laundromats. Simple averages can also perform well. Compare methods using your own results. [4]
Method B Add supported changes to a historical baseline
For many owners, a written list of changes is easier to explain than blending two complete forecasts. Begin with $20,000 of expected sales under existing conditions. Suppose a price change adds an estimated $1,000 at the expected volume, and a new wash and fold offer could add $2,000 if its full plan succeeds.
If you include 50% of that uncertain $2,000 increase, your budget is $20,000 + $1,000 + ($2,000 × 50%) = $22,000. Here, 50% is a planning allowance for partial achievement, not a measured probability. A signed minimum order or several months of actual results might justify a different allowance.
Apply the price change only from its effective date. Phase in new business as it ramps up. Subtract displaced existing sales if commercial work uses capacity that would otherwise serve self service customers. Include the extra payroll, supplies, delivery, and equipment costs necessary to earn the sales.
Document adjustments and use additional information that the baseline does not already contain. Forecasting guidance warns that unsupported judgmental changes, especially optimistic ones, can reduce accuracy. [5]
Treat confirmed changes and uncertainty differently
Do not discount a known rent increase because you gave projected sales only 40% weight. Enter contracted obligations at their expected full amount and due date. Likewise, a permanently closed section of the store should reduce capacity directly; it should not be diluted by an arbitrary historical weighting.
For a new store with little history, build a forecast from capacity, expected customer use, prices, and a gradual opening ramp. Borrowed comparisons can provide context, but another store’s sales are not your proven history. Keep the range of possible outcomes wider until your own collections establish a pattern.
7 Build expenses from what actually causes them
Use the P&L to identify the starting costs, then decide what drives each one. Some expenses stay fairly steady, some move with usage, and some contain both parts.
Rent usually follows the lease. Payroll follows scheduled hours, wage rates, employer payroll taxes, benefits, and overtime. Supplies follow consumption. Card processing follows the mix and amount of electronic sales and the processor’s fee schedule. Utilities depend on consumption, tariffs, fixed charges, and equipment performance.
For a simple payroll estimate, 250 paid hours at an assumed fully loaded cost of $20 per hour gives a $5,000 monthly budget. Define what “fully loaded” includes so you do not add payroll taxes twice. If the owner covers shifts without pay, identify the hours and show the replacement labor cost when evaluating whether the store can support hired management.
Budget utilities using usage and rates
Track water and sewer, gas, and electricity separately where possible. A useful estimate is fixed charges plus expected usage multiplied by the applicable rate. If a prior $4,000 bill contained $500 of fixed charges and $3,500 of usage charges, a 5% usage increase and 4% rate increase on the usage component would produce $500 + ($3,500 × 1.05 × 1.04) = $4,322. Apply actual tariff changes to the correct components.
A vend price increase can lift sales without increasing water use. More paid cycles usually affect usage. That is why automatically making utilities a constant percentage of revenue can mislead you. Machine efficiency also matters; ENERGY STAR identifies water and energy use as relevant commercial washer purchasing considerations. Use specifications and measured store results to estimate savings for your equipment. [6]
Separate repairs from replacements
Use service history and known maintenance needs to plan repairs. Budget the purchase of a long lived machine separately as capital spending when capitalization is appropriate. In the worked example, the machine is recorded as equipment, and depreciation allocates its recorded cost over time. Cash leaves when the vendor is paid. Confirm your capitalization policy and depreciation schedule with your accountant; tax deductions can follow different rules from this management example.
Also schedule expenses that are easy to overlook: insurance renewals, licenses, software, cleaning, security, trash service, accounting, bank fees, property related charges, and planned marketing. Use renewal quotes and contracts where available. A monthly P&L insurance expense can differ from the month in which the annual premium is paid.
8 Assemble the monthly profit budget
Our fictional store expects $22,000 in sales after weighing history and supported growth. Its operating assumptions produce the following monthly P&L. The historical column represents a comparable, normalized month; it is included so the changes are easy to see.
| Monthly profit and loss | Historical month | Budget month |
| Sales | $20,000 | $22,000 |
| Water sewer gas and electricity | $4,000 | $4,400 |
| Payroll including employer costs | $4,600 | $5,000 |
| Rent | $3,500 | $3,500 |
| Repairs and maintenance | $600 | $600 |
| Supplies used | $400 | $400 |
| Payment processing fees | $400 | $400 |
| Insurance expense | $500 | $500 |
| Other operating expenses | $600 | $600 |
| Operating expenses before depreciation and interest | $14,600 | $15,400 |
| Depreciation | $1,000 | $1,000 |
| Interest expense | $400 | $400 |
| Total expenses | $16,000 | $16,800 |
| Profit before any entity income tax | $4,000 | $5,200 |
The $22,000 sales budget less $16,800 in expenses produces $5,200 in profit. Its profit margin is $5,200 ÷ $22,000, or about 23.6%. This is an example result, not a target margin for every laundromat.
The table’s unchanged costs assume no relevant rate or service changes and enough existing capacity. In your store, additional revenue may require higher supply or processing costs. Review each line rather than copying these proportions.
9 Convert the profit budget into a cash budget
Start with the balance sheet’s $20,000 cash balance. Then schedule actual collections and payments. A basic cash forecast adds receipts to opening cash and subtracts payments to calculate closing cash; each month’s closing balance becomes the next month’s opening balance. [7]
For this month, assume customer receivables rise by $1,000, so collections are $21,000 against $22,000 of sales. Supplier payables fall by $1,000, so the store pays $16,400 for the $15,400 of operating expenses shown above. Supplies and prepaid balances remain unchanged. The store also pays the opening $1,000 tax liability, buys $6,000 of equipment for cash, repays $1,600 of loan principal, and distributes $2,000 to the owner. No new borrowing occurs.
| Monthly cash budget | Cash movement or balance |
| Opening cash | $20,000 |
| Customer collections | +$21,000 |
| Operating payments excluding interest | −$16,400 |
| Interest paid | −$400 |
| Previously recorded taxes paid | −$1,000 |
| Loan principal repaid | −$1,600 |
| Equipment purchased for cash | −$6,000 |
| Owner distribution | −$2,000 |
| Net change in cash | −$6,400 |
| Closing cash | $13,600 |
The store earned $5,200 but used $6,400 of cash. To verify the connection, start with profit, add back the $1,000 noncash depreciation, then subtract the $1,000 receivable increase, $1,000 payable decrease, $1,000 payment of previously recorded taxes, $1,600 loan principal, $6,000 equipment purchase, and $2,000 distribution. The result is the same $6,400 cash decrease.
Interest is already included in profit, so it is not subtracted again in that reconciliation. Loan principal reduces debt. The owner distribution reduces equity. The payment of the old tax liability reduces a balance sheet obligation; the example assumes its expense was recorded previously. [1]
If your business owes entity income tax on current earnings, add the appropriate expense and payment timing. For a pass through business, owner income tax payments generally belong in the owner’s planning and distributions rather than being silently treated as store operating expenses. Determine the treatment for your entity with your accountant.
10 Check the projected balance sheet
Update the opening balance sheet with the month’s planned activity. This is a practical error check: cash should match the cash budget, debt should match the loan schedule, and the balance sheet should still balance.
| Balance sheet item | Opening | Projected closing |
| Cash | $20,000 | $13,600 |
| Accounts receivable | $2,000 | $3,000 |
| Supplies on hand | $1,000 | $1,000 |
| Prepaid expenses | $3,000 | $3,000 |
| Equipment net of depreciation | $74,000 | $79,000 |
| Total assets | $100,000 | $99,600 |
| Accounts payable | $4,000 | $3,000 |
| Previously recorded taxes payable | $1,000 | $0 |
| Loans outstanding | $45,000 | $43,400 |
| Owner equity | $50,000 | $53,200 |
| Total liabilities and equity | $100,000 | $99,600 |
Equipment rises by the $6,000 purchase and falls by $1,000 in depreciation. The $1,000 is the assumed total depreciation for the month; in practice, use the asset schedule and in service dates. Equity rises by $5,200 of profit and falls by the $2,000 distribution. Every movement now has a place.
Do not force a balance sheet to balance by entering an unexplained cash adjustment. A mismatch usually means a transaction, opening balance, or timing assumption needs correction.
11 Test lower sales and protect cash
Build a base case, a downside case, and an upside case. For a simple sensitivity test, assume 25% of sales represents expenses that move directly with volume, while the other operating costs, depreciation, and interest remain fixed over this limited range. This is an illustrative cost model, not an industry ratio.
At $22,000 of sales, variable expenses are $5,500. The remaining operating expenses are $9,900, plus $1,000 depreciation and $400 interest. Each $1 change in sales therefore changes profit by $0.75 under these assumptions.
| Scenario | Monthly sales | Monthly profit | Closing cash |
| Downside with sales 10% below base | $19,800 | $3,550 | $11,950 |
| Base budget | $22,000 | $5,200 | $13,600 |
| Upside with sales 10% above base | $24,200 | $6,850 | $15,250 |
This comparison holds equipment spending, distributions, debt payments, and the dollar changes in receivables and payables constant. It assumes changed sales are collected and changed variable costs are paid in the month. If lower sales come from discounts rather than fewer cycles, costs may not fall this way. If growth requires another shift, costs may jump. Model those conditions separately.
Suppose the owner sets a minimum cash balance of $12,000 based on upcoming bills and repair exposure. The base case leaves only $1,600 above that floor; the downside falls $50 below it. The owner could reduce the planned distribution, change the equipment purchase timing where practical, or arrange funding before a shortage occurs. Essential repairs and contractual payments still need to be covered.
Set your own cash floor from unavoidable payments, collection timing, equipment risk, and the size of plausible setbacks. The $12,000 figure is specific to this example. A replacement reserve held in another business bank account remains business cash; moving money between your accounts is not an expense. Track earmarked funds separately so they are not mistaken for available spending money.
When cash is tight, add a weekly forecast for the next 13 weeks. A positive month end balance can hide a shortage just before payroll or rent is due. If a machine is financed, include the down payment, fees, and future debt service. Record lender paid vendor amounts as financed asset additions without inventing a cash receipt into your checking account.
Use break even calculations with clear limits
Under the simplified scenario assumptions, accounting break even sales are $11,300 of fixed costs, including depreciation and interest, divided by the 75% contribution margin: about $15,067 per month. Contribution margin is the portion of sales remaining after variable expenses.
That number does not cover every cash commitment. Adding principal, equipment purchases, owner distributions, and timing effects creates a different cash requirement. Use the cash budget to judge affordability rather than assuming accounting break even means the bank balance is safe.
12 Spread the plan across the year and review it monthly
Repeat the process for each month, allowing for seasonal sales, contract increases, annual premiums, planned maintenance, and equipment purchases. Add the 12 months to produce the annual budget. Keep a separate capital spending schedule and a loan schedule so the timing remains visible.
Save the approved budget as your original plan. Alongside it, maintain a forecast that you update as actual results arrive. This lets you see both how performance compares with the original commitment and what is now likely to happen.
After closing each month, compare actual sales, expenses, profit, and cash with the budget. Start with the largest differences, then identify their causes. If sales were budgeted at $22,000 but actual sales were $21,000, the variance is −$1,000, or about −4.5%. Check whether the cause was fewer cycles, lower prices, downtime, service mix, or collection timing.
Distinguish a timing problem from a permanent change. An insurance payment arriving one month early affects cash timing. A higher renewal premium affects the ongoing cost forecast. Lower customer collections may increase receivables without reducing accrual sales.
Also test whether your weighting approach is helping. Recreate several past monthly forecasts using only information available at the time. Compare the history only forecast, the operating forecast, and the blend against actual results. Calculate each month’s absolute error by ignoring the plus or minus sign, then average those errors. Prefer a method that stays reasonably accurate across multiple months, and watch for repeated overprediction.
For example, predictions of $20,000, $22,000, and $25,000 against actual sales of $21,000 have absolute errors of $1,000, $1,000, and $4,000. One month does not establish the best method, but repeated misses by the ambitious forecast suggest its weight or assumptions need revision. Keep the comparison simple enough that you will actually maintain it.
Put the budget to work before committing the cash
Before approving additional spending, check that the sales forecast has evidence behind it, the expense budget includes the resources needed to deliver those sales, and the cash forecast stays above your minimum balance even under a reasonable downside. Then confirm that the projected balance sheet agrees with the plan.
Your first budget does not need to predict every repair or customer visit. It needs to make assumptions visible and give you time to respond. Verified history tells you what the store has demonstrated. Supported projections explain what may change. A connected profit, cash, and balance sheet budget shows what those changes mean for the money you can safely commit.
Sources
The numbered citations support the accounting and forecasting principles identified in the text. All laundromat amounts, calculations, weights, and scenarios are original illustrations. Sources accessed October 19, 2026.
[1] U.S. Securities and Exchange Commission. Beginners’ Guide to Financial Statement. February 4, 2007. Definitions of financial statements, the accounting equation, and the distinction between income and cash flows.
https://www.sec.gov/about/reports-publications/investorpubsbegfinstmtguide
[2] U.S. Small Business Administration. Write your business plan, Financial projections section. Guidance on connecting financial projections and preparing monthly or quarterly detail.
https://www.sba.gov/business-guide/plan-your-business/write-your-business-plan
[3] Tim Berry, U.S. Small Business Administration. What Makes an Ongoing Business Forecast Realistic. November 2, 2017. Aligning forecast categories with accounting reports and connecting changes to operating drivers.
https://www.sba.gov/blog/2017/2017-11/what-makes-ongoing-business-forecast-realistic/
[4] Rob J. Hyndman and George Athanasopoulos. Forecasting Principles and Practice, third edition, section 13.4, Forecast combinations. OTexts. Evidence on combining forecasts and simple averages.
https://otexts.com/fpp3/practical.html#forecast-combinations
[5] Rob J. Hyndman and George Athanasopoulos. Forecasting Principles and Practice, third edition, section 6.7, Judgmental adjustments. OTexts. Using additional information and documenting forecast adjustments.
https://otexts.com/fpp3/judgmental.html#judgmental-adjustments
[6] ENERGY STAR. Commercial Clothes Washers. Information on energy and water efficiency in commercial washer selection.
https://www.energystar.gov/products/commercial_clothes_washers
[7] Australian Government, business.gov.au. Set up a cash flow statement. Guidance on opening cash, incoming and outgoing cash, closing balances, and forecasts.
https://business.gov.au/finance/cash-flow/set-up-a-cash-flow-statement
[8] Internal Revenue Service. Publication 538, Accounting Periods and Methods, Cash Method and Accrual Method sections. General distinctions between cash and accrual tax accounting and special treatment of advance payments.
https://www.irs.gov/publications/p538
[9] Business Victoria, State Government of Victoria. Cash flow forecasting. Forecasting incoming and outgoing cash using past performance and customer payment timing.
https://business.vic.gov.au/business-information/finance/cash-flow/cash-flow-forecasting