How to plan for a VAT bill without squeezing cash flow

For most VAT-registered businesses, the VAT bill is not a surprise. It arrives on a predictable timetable and the amount builds up in plain sight, invoice by invoice. Yet it still catches plenty of owners out, usually because the money was sitting in the current account and quietly got spent. A little structure makes it far easier to pay on time without disrupting the rest of the business.

Know your dates

For businesses on standard quarterly returns, the return and the payment are usually due one calendar month and seven days after the end of the VAT period. A quarter ending on 30 September, for example, is normally due by 7 November. The deadline doesn’t move for weekends or bank holidays, and the money needs to have reached HMRC by that date. If you pay by Direct Debit, HMRC collects a few working days after the deadline, which can help with timing.

Returns are now submitted through Making Tax Digital compatible software, so your bookkeeping system should be able to show your running VAT position at any point in the quarter. Check the dates for your own stagger group on GOV.UK or with your accountant, as quarter ends vary between businesses.

Treat VAT as money you are holding, not money you have earned

The simplest habit is also the most effective. When customers pay you, part of that payment belongs to HMRC. Many businesses move the VAT element into a separate savings or holding account every week or every month, so the balance is ready when the return is due.

• Set a regular day to transfer the VAT element of recent receipts.
• Base the transfer on the VAT figure in your software rather than a rough percentage, especially if your input VAT varies a lot.
• Don’t dip into the holding account for other bills unless you have a clear plan to top it back up.
• If you use the Flat Rate Scheme or another special scheme, ask your accountant how to calculate the amount to set aside.

Watch for the quarters that don’t look like the others

A VAT bill is usually larger after a strong trading period, which can arrive just as sales slow down. Retailers often see this after the Christmas quarter, and seasonal businesses see it after their peak. Large purchases work the other way, since reclaimable VAT on equipment or stock reduces what you owe. Looking ahead one or two quarters in a simple cash flow forecast helps you spot the bills that will feel heavier than usual.

If you can’t pay in full

Talk to HMRC early rather than missing the deadline quietly. Late payment can lead to penalties and interest, and HMRC may agree a Time to Pay arrangement if you contact them before the bill becomes a debt they are chasing. Keep filing your return on time even if you can’t pay, because late submission is treated separately.

Some businesses choose to spread a VAT or tax bill using a short-term business loan designed for this purpose, or draw on an existing revolving facility. This can make sense when the business is sound and the pressure is about timing, for example when a large customer pays late in the same month the bill is due. It is worth comparing the full cost of borrowing with the cost of an HMRC arrangement, and being honest about whether the shortfall is a one-off or a sign that pricing or margins need attention.

Make next quarter easier

Once a difficult quarter is behind you, review what caused it. It might be a gap in the habit of setting VAT aside, a slow-paying customer or a change in the mix of sales. Fixing the cause is usually cheaper than financing the result, and a lender or broker will find it reassuring if you can show that a tax shortfall was a one-off with a clear explanation.