Use this calculator to see the cash left after expected receipts and committed outflows over a stated number of weeks. It is a short planning view, not a guarantee that every receipt will arrive.
What to enter
Enter opening unrestricted cash, expected receipts, committed outflows and a whole number of weeks. Keep the period short enough that the entries are specific and reviewable.
What the result means
The calculator shows cash after commitments, any shortfall and, where it is meaningful, weeks of coverage. An exact zero balance is zero cash, not a shortfall. Coverage is not meaningful when outflows are zero or cash is already negative.
Worked example
Opening cash of £100.10 plus receipts of £200.20 less outflows of £300.30 leaves £0.00. There is no shortfall, but there is no cash buffer either.
Limitation and next step
Update the figures when dates or commitments change. If cash after commitments is close to zero, use the 13-week forecast to plan the next actions.
Important
General information only. It is not a tax, accounting, legal or financial determination for a particular business.
Next step
Compare the indicated buffer with the timing of known payments and identify one action if it is not enough.
Sources and review
- Evidence check date: 5 November 2026.