A business can show a profit and still be unable to pay its next bill. Profit measures income and expenses over an accounting period; cash is the money actually available on a particular day. Unpaid invoices, unsold inventory, payroll, tax, rent, supplier bills and loan instalments can create a cash crisis before reported sales become collected cash.
Profit is a result; cash is a payment resource
Net profit is calculated for a period such as a month, quarter or year. It normally records revenue when it is earned and expenses when they are incurred, even if the customer has not paid and the business has not yet transferred cash. A cash balance answers a different question: how much money can the company use today, and on each payment date, to meet its obligations?
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Consider a consultancy that completes a $20,000 project in March and invoices the client on 30-day terms. March’s accounts may include the $20,000 as revenue and show a profit. If payroll, rent and tax are due before the invoice is paid, the bank account can still be short. The profit is real as an accounting result; it is not proof that the money is available.
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How the cash-flow cycle creates the gap
Cash moves through an operating cycle. The company first pays for labor, materials, stock, premises and other delivery costs. It then makes the product or provides the service, invoices the customer and waits for collection. Cash returns only when the customer pays. Every day between the outgoing payment and the incoming receipt has to be financed.
Four points where cash gets trapped
- Production or delivery: wages, contractors, materials, shipping and overhead may be paid before a sale is complete.
- Inventory: money spent on goods remains tied up until those goods sell. Slow-moving or obsolete stock can turn an apparent asset into a loss.
- Accounts receivable: an invoice is an accounting asset, but it is not spendable until the customer pays.
- Payment obligations: payroll, suppliers, rent, tax, interest and principal have due dates that do not move just because a customer is late.
Payment terms can run from 30 to 90 days in the UK guidance cited by the Insolvency Service. Those terms are not a universal rule, and actual collection may take longer when invoices are disputed or customers pay late. A business that pays suppliers in 15 days and collects customers in 60 days must fund roughly 45 days of activity, plus a cushion for variation.
Why one large sale can make liquidity worse
A large order may require the company to buy stock, hire staff or pay subcontractors before it receives any customer cash. If the gross margin is positive, the order increases profit once the sale is recognized. It can nevertheless reduce the bank balance immediately. The more expensive the delivery and the longer the collection period, the more working capital the order consumes.
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Why growth can produce negative cash flow
Growing sales often enlarge both inventory and receivables. A distributor may need to hold twice as much stock to support twice as many orders. A service firm may add employees weeks before clients pay for the resulting work. If customers receive credit, each additional dollar of sales can require an additional advance from the business.
This is the growth trap: revenue and profit rise on the income statement while operating cash flow falls. Growth is safe only when the company has enough funding to cover the enlarged delivery-to-collection period, or when it changes terms so that cash arrives earlier than costs are due.
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Growth can also expose concentration risk. If one major customer represents a large share of receivables, a delayed payment creates a bigger hole than the average collection period suggests. Forecasts should therefore include customer-specific due dates and realistic delay assumptions rather than applying one optimistic percentage to all invoices.
Working capital: useful measures, limited answers
Working capital is commonly calculated as current assets minus current liabilities:
Working capital = current assets − current liabilities
The working-capital ratio is current assets divided by current liabilities:
Working-capital ratio = current assets ÷ current liabilities
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Current assets can include cash, receivables and inventory. Current liabilities include obligations due within the short term, such as supplier bills, payroll liabilities, tax and near-term debt. These measures show the scale of short-term resources and claims, but they do not prove that assets can be converted into cash in time. A building may appear in assets yet cannot normally be sold quickly enough to pay Friday’s payroll. Likewise, old receivables or unsellable inventory may have far less liquidity than their book values imply.
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A practical diagnosis when profit is positive but cash is low
The fastest way to find the problem is to place a dated cash forecast beside the profit-and-loss statement. The profit-and-loss statement explains performance; the forecast explains whether money arrives before each obligation falls due.
- Bring the books up to date. Reconcile bank accounts, post bills and receipts, and record payroll, tax, debt and one-time commitments. An outdated ledger can make both profit and cash appear safer than they are.
- Build a rolling forecast. List the opening bank balance, expected customer receipts and every planned payment by date. Use a weekly view for a stressed business and extend the horizon far enough to include tax, annual insurance, loan instalments and major purchases.
- Age receivables. Group invoices by current, 1–30 days overdue, 31–60 days and older. Contact customers before and immediately after due dates, resolve disputes, and assign an owner to each collection.
- Test the assumptions. Delay expected receipts, increase a key cost or remove a major order. The lowest projected balance under a plausible downside case is more useful than a single optimistic ending balance.
- Review inventory. Compare stock on hand with sales velocity and planned purchasing. Pause or reduce purchases that will not convert to cash before the next payment pinch.
- Map suppliers and obligations. Put supplier due dates beside customer receipt dates. Include payroll, sales or value-added tax, income tax, rent, insurance, interest and principal; these are common sources of surprises.
- Calculate the funding gap. Estimate the cash required to cover the entire delivery-to-collection period, then add a margin for late payments, returns and unexpected costs. Compare that requirement with the minimum balance your forecast shows.
Operational ways to release cash
Collect earlier and more predictably
Set payment terms that reflect the cost and timing of delivery. Request deposits or milestone payments for work that requires substantial upfront spending. Invoice immediately when a milestone is reached, provide accurate purchase-order details, and make electronic payment instructions clear. A shorter debtor period reduces the amount of working capital tied up in receivables, but aggressive terms can damage sales or customer relationships; choose terms customers can realistically meet.
Buy and hold less inventory
Use sales history and reorder points to match purchasing with demand. Separate essential safety stock from speculative stock, and identify items that are slow-moving or obsolete. Discounting or returning excess goods may recover some cash even when it reduces the original margin.
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Negotiate supplier timing lawfully
Ask suppliers in advance whether they can extend terms, align due dates with your collection cycle or accept staged payments. The British Business Bank advises increasing creditor days only by negotiating with suppliers. Unilaterally paying late can trigger penalties, supply stoppages and damaged credit, turning a timing problem into an operating problem.
Keep a current balance sheet
A balance sheet shows whether rising profit is being absorbed by receivables, inventory or debt. Review it at least monthly, and investigate material movements rather than relying only on the income statement. The U.S. Small Business Administration emphasizes bookkeeping, basic finance knowledge and balance-sheet information for tracking capital and projecting cash flow.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Financing can bridge timing, but it cannot repair a loss-making model
External funding is appropriate when the business has a credible source of repayment and the shortfall is temporary or tied to a profitable order. It is dangerous when new borrowing is needed simply to cover recurring operating losses. Compare every option by arrival speed, certainty, total fees and interest, repayment dates, effect on future cash flow, eligibility, required records and whether receivables or inventory secure the facility.
| Option | When it can fit | Key cash-flow questions | Important limitation |
|---|---|---|---|
| Invoice financing | Receivables are valid and customers are expected to pay. | How quickly is an advance available? What discount, service and collection fees apply? When is the balance repaid? | Fees reduce the margin, and disputed or concentrated invoices may be ineligible. It does not solve weak demand or uncollectible debts. |
| Revolving credit | Short, recurring gaps occur and the business can reduce the balance when receipts arrive. | What is the commitment fee, interest rate, limit, collateral requirement and repayment expectation? Does usage remain affordable under delayed collections? | A continually drawn line can conceal a structural deficit and create a larger repayment burden later. |
| Term working-capital loan | A defined investment or seasonal gap has a forecast repayment source. | When do principal and interest start? Does the payment coincide with the cash-generating period? What happens in a downside case? | Fixed repayments reduce future liquidity even if sales are slower than planned. |
| Supplier extension | Suppliers agree to terms that better match customer receipts. | Is there a price increase, late fee, minimum order or loss of early-payment discount? | It depends on supplier consent and should be documented; it is not permission to pay late without agreement. |
In the United States, the SBA says its 7(a) program can finance short- and long-term working capital for eligible small businesses. Eligibility includes operating for profit, being U.S.-based and small under SBA rules, demonstrating creditworthiness and showing a reasonable ability to repay. Most 7(a) term loans are repaid with principal and interest from business cash flow. Limits, rates, lender requirements and program conditions change, so applicants must check current SBA and lender terms rather than rely on an older summary.
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How much cash should a business keep?
There is no universal number of reserve days. The JPMorgan Chase Institute reported historical observations from its small-business dataset: a median cash buffer of 27 days of outflows, 13 days at the 25th percentile and 62 days at the 75th percentile. It defined buffer days as the number of days a business could cover outflows from its cash balance if inflows stopped. The same dataset reported median daily outflows of $374 and median daily inflows of $381. Industry variation was substantial, from a historical median of 16 buffer days in restaurants to 47 days in real estate.
Those figures describe the dataset and period studied, not a recommended reserve today. A seasonal retailer, a payroll-heavy agency and a business with volatile customers face different risks. Set a reserve by modeling your own unavoidable outflows, collection delays, seasonality, debt service, tax dates and the time required to obtain backup funding. Include a margin for an adverse but plausible scenario, not only the average month.
Worked example: profitable growth with a cash shortfall
A wholesaler sells $100,000 of goods in April at a 25% gross margin. It pays suppliers $75,000 in April, pays $15,000 for wages and overhead, and invoices customers on 60-day terms. On the income statement, the sale can produce a $10,000 operating profit before other costs. In the bank account, however, $90,000 has left or is committed while little or none of the $100,000 has arrived.
If May brings another similar order, the company may need another $75,000 for stock before April’s customers pay in June. Profit has grown, but the receivables and inventory expansion have consumed cash. A dated forecast would reveal the low point; collection milestones, slower purchasing, negotiated supplier terms or appropriately sized financing could address that timing gap. Borrowing would be sensible only if the margin and collection pattern can repay it.
Controls that prevent the next cash crisis
- Review cash, receivables, inventory and upcoming obligations on a fixed weekly or monthly schedule.
- Assign responsibility for invoicing, collections and forecast updates; do not leave them as occasional owner tasks.
- Set a minimum cash threshold based on unavoidable outflows and downside timing, then require a decision before spending below it.
- Match sales incentives to collected cash where appropriate, so rapid invoicing and payment quality matter alongside booked revenue.
- Reforecast after a major contract, hiring plan, stock purchase, tax assessment or change in customer terms.
- Ask a qualified accountant for help when records are incomplete, tax obligations are complex or financing decisions could threaten solvency.
Profit tells you whether the business model earned more than it consumed over a period. Liquidity tells you whether it can survive every payment date. Managing both requires current records, a dated forecast and deliberate control of the time between paying to deliver and collecting from the customer.
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