Cash flow / Free financial tools

13-Week Cash Flow Forecast Calculator

Map weekly receipts and payments, identify the lowest cash point and estimate a funding gap.

USD • Planning model · Instant results · No sign-up

Enable JavaScript to use this interactive calculator. The calculation method and assumptions are explained below.

How this calculator works

Each week's closing cash equals opening cash plus cash receipts minus cash payments. That closing balance becomes next week's opening balance. The funding gap includes the opening balance when finding the lowest point.

Planning estimate only. Review the assumptions alongside the result before using it for a tax, financing or business decision.

Common questions

Should I enter invoiced sales?

Enter when cash is expected to arrive, not when an invoice is issued. Do the same for supplier payments, payroll and taxes.

How can I test a delayed customer payment?

Copy the current result to scenario A, move that receipt to a later week, and compare the new result as scenario B.

Put your numbers into context.

A calculator can help you ask better questions. Tell ZTax what you are planning and we will discuss the records, scope and support you need.

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