Restaurants rarely close because they were unprofitable on paper. They close because they ran out of cash — after a slow January, a broken walk-in, a tax bill that arrived in the same week as payroll, or a supplier that shortened its terms. Restaurant cash flow is the KPI that sees those moments coming. This guide shows a simple weekly cash view an owner can keep in 15 minutes, what moves it, and how much cash a single-location restaurant should hold in reserve.
Profit and cash are different numbers
Profit is calculated when sales and costs are recognised; cash moves when money actually arrives and leaves. In a restaurant the gap comes from:
- Timing of payments. Guests pay today; suppliers are paid in 7, 14 or 30 days; rent is paid monthly or quarterly in advance; payroll every week or two.
- Large irregular items. Annual insurance, licence renewals, equipment repairs, quarterly taxes.
- Loan repayments. The principal part does not appear in profit at all, but it leaves the bank account.
- Stock. Buying ahead of a price increase is profitable; it also ties up cash.
- Delivery platforms and card processors that pay out days after the sale.
The weekly cash view
One table, eight weeks forward, updated every Monday:
| Week 1 | Week 2 | Week 3 | … | Week 8 | |
|---|---|---|---|---|---|
| Opening balance | $22,000 | $19,700 | $26,300 | ||
| + Card and cash takings | $31,000 | $33,000 | $32,000 | ||
| + Delivery platform payouts | $2,400 | $2,600 | $2,500 | ||
| − Suppliers | $10,500 | $9,800 | $10,200 | ||
| − Payroll and payroll taxes | $16,200 | $0 | $16,400 | ||
| − Rent, loan, utilities, other | $9,000 | $19,200 | $3,100 | ||
| Closing balance | $19,700 | $26,300 | $31,100 |
The point is not precision; it is seeing the low weeks in advance. A week where rent, payroll and a quarterly tax payment coincide is visible six weeks ahead — when there is still time to move a payment, delay a purchase or arrange an overdraft.
How much cash should a restaurant keep?
A common rule of thumb is to hold enough to cover four to eight weeks of fixed costs — rent, salaried and core hourly payroll, loan repayments, insurance and utilities. Seasonal restaurants need more, built up in the busy months. Write the number down as a target and show it on the dashboard next to the actual balance.
What moves restaurant cash flow
- Sales against break-even — weeks below break-even drain cash directly.
- Prime cost — food and labor are the largest outflows; a two-point rise on $30,000 a week is $600 gone, every week.
- Stock levels — high days of inventory on hand is cash sitting in the walk-in.
- Supplier terms — moving from 30-day to 7-day terms can take a full month of purchases out of the bank in one go.
- Capital spending — a new oven paid in cash rather than financed.
Practical actions
- Update the eight-week view every Monday as part of the weekly KPI review.
- Put annual and quarterly payments in the forecast the day you know about them.
- Agree supplier terms in writing and pay on the due date, not early.
- Separate a tax account and move sales tax and payroll tax into it weekly.
- Arrange an overdraft or credit line before you need it — banks lend more easily to a business that is not yet short of cash.
Working capital, briefly
Working capital is current assets (cash, stock, money owed to you) minus current liabilities (supplier bills, taxes, wages owed). Restaurants typically run low or even negative working capital because guests pay immediately and suppliers are paid later. That is normal — but it means a fall in sales hits cash quickly, which is why the weekly cash view matters more than the balance-sheet ratio.
Frequently asked questions
How do you calculate cash flow for a restaurant?
Opening bank balance + money received (card, cash, delivery payouts) − money paid out (suppliers, payroll, rent, loans, taxes, other) = closing balance. Repeat for each of the next eight weeks.
Why is my restaurant profitable but short of cash?
Usually because of timing: loan principal, stock purchases, quarterly taxes and capital spending leave the account without reducing profit, or suppliers are being paid faster than before.
How much cash reserve does a restaurant need?
A common rule of thumb is four to eight weeks of fixed costs, more for seasonal businesses. Base it on your own fixed costs, not on sales.
How often should a restaurant forecast cash flow?
Weekly, eight weeks forward. Monthly forecasting misses the week-to-week peaks of payroll and rent.
Related restaurant KPIs
Cash flow is the final check in the restaurant KPI framework, after profit margin and break-even. For a café, see coffee shop KPIs.
See the numbers that drive cash every month. The free Restaurant KPI Excel template tracks sales, prime cost, margins and break-even in one workbook. The Restaurant Performance System reviews them weekly and points to the one action that matters most.