Choose the detail the decision needs.
A weekly forecast can support short-term payment planning, while monthly projections may be more useful for growth and funding discussions. A positive month-end balance can conceal a cash shortfall earlier in the month, so the time intervals must fit the payment pattern.
Forecast receipts, not just sales.
Use debtor balances, expected collection dates, customer terms and likely delays where relevant. Separate contracted receipts from uncertain sales. For a new sale, be explicit about invoicing dates and when the customer is expected to pay.
Include the commitments that are easy to miss.
Payroll, taxes, supplier payments, rent, borrowing repayments and one-off investment should be timed appropriately. Distinguish an available facility from funding that has not been committed. Tax and payment dates should reflect the actual business and period.
Use the forecast as a review process.
Compare expected and actual receipts and payments, investigate variances and update the next forecast. A scoped handover can explain how to roll the model forward and maintain assumptions. The model is a decision tool, not a guarantee that funding will remain available.