Enter one outstanding invoice and instantly see the 60-day cash impact, what it’s costing in working capital, and what you can do about it today.
Invoice value, your payment terms, how many days it’s already overdue, and your average gross margin.
The tool builds a 60-day cash timeline and calculates the true cost of the delay to your working capital.
Four key figures: cash gap, revenue needed to cover it, statutory interest accruing, and total cost of the delay.
Plain-English actions based on how overdue the invoice is and what’s at stake for your cashflow.
One invoice. Instant 60-day cash impact analysis. Free, no sign-up.
Free for one invoice — track multiple debtors with a subscription
Enter your details and your 60-day late payment impact report downloads instantly — no waiting, no email.
Enter your invoice details on the left and click Calculate cash impact to see your 60-day analysis.
When a customer pays late, the obvious cost is the cash you don’t have. But the real cost is what that cash was supposed to do — pay your suppliers, cover your wages, fund your next order. Every day it sits in someone else’s account, you’re either borrowing to cover the gap or turning down opportunities because you don’t have the working capital to take them.
The working capital cost of a late invoice is calculated by the revenue you would need to generate, at your gross margin, to replace the missing cash. A £10,000 invoice at 40% gross margin requires £25,000 in new sales to replace. That’s what late payment actually costs.
Under the Late Payment of Commercial Debts (Interest) Act 1998, UK businesses have the statutory right to charge interest on overdue invoices. The rate is the Bank of England base rate plus 8 percentage points — currently 8.5%. You can also claim fixed compensation of £40–£100 per invoice depending on the amount owed, plus reasonable debt recovery costs.
Send a formal late payment letter the day after the due date. State the invoice number, amount, original due date, and that you intend to apply statutory interest. Most businesses pay within 7 days of receiving a formal letter. The longer you wait, the weaker your position becomes.
If the invoice remains unpaid after 30 days overdue, consider a statutory demand (effective for debts over £750) or referral to a debt recovery service. For amounts over £10,000 the small claims track in county court is straightforward and cost-effective.