Small businesses can show a profit and still run short of cash. The fix is to track when money is expected to arrive and when it must go out—not just sales or the bank balance. A regularly updated forecast can expose timing gaps early enough to adjust spending, collections, or purchasing.
Why profit and cash are different
A profit-and-loss statement records revenue and expenses under the business’s accounting method; it does not necessarily show when money changes hands. A credit sale may count as revenue while the payment remains in accounts receivable. Meanwhile, buying inventory, repaying loan principal, or purchasing an asset can consume cash without appearing as an expense in the same way on the profit-and-loss statement. The SBA’s discussion of budgeting and forecasting explains why a profitable-looking business can still face a cash squeeze.
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Consider the sequence rather than assume a particular outcome: a business completes a sale on credit, pays for materials or inventory, and later receives the customer’s payment. The sale may be recorded before the receipt, while the purchase may require cash before the goods sell. A forecast makes that timing visible; a profit figure alone does not.
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Relying on the bank balance
Your current balance is a snapshot, not a view of upcoming obligations. It may look adequate before payroll, rent, a loan payment, or an inventory order comes due. Build a forecast that estimates the dates and amounts of expected receipts and payments, then update it as actuals arrive. As SBA contributor Tim Berry put it, “Forecasting is guessing; but make educated guesses.”
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Sending invoices late or making payment confusing
Every avoidable delay between completing work and asking for payment can push cash receipts further out. SCORE recommends invoicing promptly after work is completed, using milestone or periodic billing when appropriate, and clearly stating the agreed terms and payment instructions. Its guidance on collecting past-due invoices also emphasizes a clear invoice with the amount due, due date, and simple instructions for paying.
- Send the invoice as soon as the work or agreed milestone is complete.
- Show the amount, due date, payment methods, and any agreed terms clearly.
- Use a convenient payment process and follow up on overdue invoices.
These steps can reduce friction, but they cannot guarantee when a customer will pay. Base the forecast on actual payment patterns where possible, not only the invoice due date.
Forecasting sales too optimistically
A sales target is not the same as a cash receipt. If a forecast assumes every sale happens on schedule and every customer pays promptly, it can encourage spending before the money arrives. Start with historical sales and payment timing, then identify what is changing—such as volume, seasonality, customer mix, sales channels, margins, or expected delays. SCORE’s cash-flow guidance recommends using payment patterns, sales projections, inventory plans, and expected expenditures to build a forecast.
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Leaving inventory and other outflows out
Inventory can tie up cash before it is sold. A sales forecast that includes expected revenue but omits the cash needed to buy stock can give a misleading picture of what will be available for bills. Include meaningful outflows such as payroll, rent, inventory, supplies, loan payments, and other operating expenses. The SBA’s cash-flow advice likewise stresses accounting for expenses alongside expected income.
Failing to review the forecast against actuals
A forecast loses usefulness when it is not refreshed. Compare expected receipts and payments with what actually happened, investigate meaningful differences, and adjust the assumptions. Align forecast categories with the business’s bookkeeping so the numbers can be checked against accounting reports. A forecast is a working estimate, not a substitute for reliable records.
What to put in a practical cash-flow forecast
Organize the forecast by week or month, choosing a horizon and cadence you can estimate credibly. For each period, list expected cash receipts and payments, then calculate the projected ending balance from the starting balance. SCORE recommends building from sales projections, payment patterns, inventory plans, and expected expenditures.
- Starting cash: the balance available at the start of the period.
- Receipts: expected customer payments and other cash inflows, timed according to realistic payment patterns.
- Operating outflows: payroll, rent, inventory, supplies, and other regular expenses.
- Financing and major purchases: loan payments and asset purchases that affect cash availability.
- Ending cash: starting cash plus receipts, less payments; carry this forward as the next period’s starting point.
Use actual records as the baseline, and make assumptions explicit when conditions change. The goal is not to predict perfectly; it is to spot a likely shortfall early enough to investigate its cause and consider a response.
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The best method is the one that fits your bookkeeping and gets updated consistently. SCORE notes that accounting software commonly includes cash-flow reports or forecasts. A template can be a straightforward starting point, while a bookkeeper or CPA may help when records or assumptions are difficult to maintain. The SBA lists accounting support options, including professional help and online services.
- Accounting reports or software: useful when records are current and the reports can reflect actual customer-payment timing and expected outflows.
- A forecast template: useful for organizing receipts and payments by period, provided it is updated from real bookkeeping records.
- Bookkeeper or CPA support: useful when you need help keeping records aligned, checking assumptions, or interpreting the numbers.
Whichever approach you use, check that it includes inventory and other significant payments, reflects how customers actually pay, and can be compared with actual cash movement. A paper ledger or planner may help organize expected receipts and payments, but it does not replace accounting records.
How often to check—and what the numbers can tell you
Review the forecast on a schedule that matches how quickly your sales and expenses change. Weekly or monthly periods can work when they let you estimate timing credibly; compare each period’s projection with actual results and revise the remaining periods. If the projected balance falls below what you need for obligations, investigate the timing and assumptions rather than treating the forecast as a guarantee. Possible areas to examine include delayed collections, the timing or size of inventory purchases, and expenses that were omitted or underestimated.
SCORE reported in a September 25, 2021 article that 60% of small-business owners had experienced a cash-flow issue at some point, attributing the figure to a 2019 QuickBooks survey. It is a historical, secondary report—not a current estimate of prevalence—and does not establish that a particular mistake causes business failure.
The cited guidance is U.S.-oriented. Payment terms, tax treatment, and accounting obligations can vary by jurisdiction and business circumstances; consult a qualified professional for advice specific to your business.
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