How to Read Your Cash Flow Forecast
The forecast shows each month's cash position. Red highlighted rows indicate months where your closing balance is negative — these are cashflow danger zones requiring action. A negative cashflow month does not automatically mean insolvency if you have reserves, but it is a warning signal.
VAT-registered businesses collect 20% on top of revenue from customers, then pay it to HMRC in the month after each quarter ends. This creates predictable large outflows that must be planned for.
Cash Flow Forecast FAQs
How to do a cash flow forecast for a UK business?
A cash flow forecast projects all cash coming into and going out of your business each month. Start with your opening bank balance, add all expected receipts (sales, grants, loans), then deduct all payments (suppliers, wages, rent, tax, VAT). The result is your closing balance each month. Our calculator does this automatically for 12 months using your inputs.
Why is cash flow important for small businesses in the UK?
Cash flow is often more important than profit for small businesses. A profitable business can still fail if it runs out of cash — for example by paying suppliers before customers pay invoices. 82% of business failures cite cash flow problems as a contributing factor. Forecasting cash flow lets you spot gaps early and arrange funding before a crisis.
What causes cash flow problems in UK businesses?
Common causes include: slow-paying customers (long debtor days), seasonal revenue fluctuations, rapid growth requiring stock and staff investment before revenue arrives, unexpected large expenses, VAT quarterly payments, tax bills, and poor credit control. Invoice financing and business overdrafts are common solutions for short-term cash gaps.
How to improve business cash flow in the UK?
Key strategies include: invoice customers promptly and chase overdue payments, offer early payment discounts, negotiate longer payment terms with suppliers, use invoice finance or factoring, hold a cash reserve of 1–3 months of costs, spread large purchases over time using lease or HP finance, and forecast ahead to spot gaps before they happen.
Should a cash flow forecast include VAT?
Yes — if your business is VAT-registered, your cash flow must include VAT. You collect 20% VAT from customers (a cash inflow) but pay it to HMRC quarterly (a cash outflow). This creates a large quarterly cash outflow that can surprise unprepared businesses. Our calculator adds VAT to revenue and models quarterly VAT payments so you can plan accordingly.