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Create a practical 13-week cash forecast

Profit and available cash answer different questions. A rolling thirteen-week forecast helps an owner see when money is expected to arrive, when commitments fall due, and which decisions need attention now.

Updated October 23, 20263 min readGeneral education · Official sources linked below

Start with bank cash you can actually use

Record cleared cash, then identify amounts reserved for taxes, payroll, customer obligations, or other restrictions. List expected collections by customer and week using realistic payment behavior. Keep uncertain opportunities outside the base case until there is a defensible reason to include them. A signed contract may support future revenue without guaranteeing cash will reach the bank before next week’s payroll.

Schedule commitments by payment date

Add payroll, rent, suppliers, debt service, taxes, insurance, software, and planned owner withdrawals in the weeks they are expected to be paid. Include annual and quarterly bills that disappear from an average monthly budget. For each week, calculate beginning cash plus receipts minus disbursements. Show a minimum operating cash target as a management assumption, not as a universal standard every business should adopt.

Use scenarios to choose specific actions

Create a delayed-collections case and a higher-cost case. If either produces a shortfall, identify actions with owners and dates: contact overdue customers, renegotiate a legitimate payment schedule, postpone optional spending, or discuss financing. Do not solve the forecast by silently delaying tax or payroll obligations. At each weekly review, replace the first week with actual results, explain differences, and add another week.

  • Separate confirmed collections from pipeline estimates.
  • Include taxes, annual bills, and debt principal payments.
  • Test what happens if major customers pay later.
  • Assign concrete actions before a projected cash gap arrives.

Questions to consider

Why not just use the income statement?

An income statement does not by itself show the timing of collections, loan principal payments, asset purchases, and other cash movements. Review it alongside the cash forecast and balance sheet.

Is thirteen weeks mandatory?

No. It is a useful management horizon for many small businesses. Use the period and detail that fit your operating cycle, and keep the forecast current.

Official sources and further reading

Use this guide to prepare questions and organize records. It does not determine eligibility, establish a professional engagement or guarantee a tax or business outcome.

Better questions make a stronger starting point.

Explore the guides, prepare your records and discuss the scope of help you need.

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