What is a VAT return?

A VAT return is the periodic report, usually quarterly, a VAT-registered business sends HMRC showing VAT charged on sales, VAT reclaimed on purchases, and the net amount owed or refunded. It must be filed digitally under Making Tax Digital.

A plain-English definition for UK small businesses, not tax advice. Where a figure changes at a Budget, check gov.uk or ask your accountant.

LAST REVIEWED 29 AUGUST 2026 · BIZZLE

What is on a VAT return?

Nine boxes. The ones that matter for most small businesses are output VAT on sales, input VAT on purchases, the difference between them, and the net value of sales and purchases for the period. The remaining boxes deal with goods moving to and from Northern Ireland and the EU, and are zero for most domestic businesses.

The return covers a VAT period, normally a quarter, and is due one calendar month and seven days after the period ends. Payment is due the same day; for most businesses that means a direct debit collected a few days later. Monthly returns are available for businesses that are usually in a refund position, and an annual scheme exists for small ones.

Since Making Tax Digital, the return is filed from software that holds the underlying records, not typed into a web form. The figures must flow digitally from the bookkeeping to the boxes, which is the part that rules out a spreadsheet and manual copying.

A worked example

The electrician's quarter from the VAT entry, box by box. He sold £30,000 net and bought £12,000 net, all standard-rated, all within the UK.

BoxWhat it holdsFigure
1VAT due on sales£6,000
2VAT due on acquisitions from the EU (Northern Ireland only)£0
3Total VAT due£6,000
4VAT reclaimed on purchases£2,400
5Net VAT to pay£3,600
6Total sales excluding VAT£30,000
7Total purchases excluding VAT£12,000
8 and 9Goods to and from the EU (Northern Ireland only)£0

What goes wrong on VAT returns?

  • Reclaiming input VAT without a valid VAT invoice, or on a supplier who turns out not to be registered.
  • Missing a purchase from the period and reclaiming it a quarter late, which is allowed but muddles the reconciliation.
  • Treating the VAT owed as spare cash between quarters, so the return is right and the payment bounces.
  • Filing from figures that were adjusted after the bank reconciliation, so the return and the ledger disagree.

TERMS USED ON THIS PAGE

COMMON QUESTIONS

Questions people ask.

When is a VAT return due?

One calendar month and seven days after the end of the VAT period, for both filing and payment. A quarter ending 31 March is due by 7 May. Direct debit payments are taken a few working days after that, which is the only extension available.

What if I made a mistake on a previous VAT return?

Errors below a set limit can be corrected on the next return by adjusting the boxes; larger ones, or deliberate ones, must be reported to HMRC separately. The current limits are on gov.uk. Keep a note of what was corrected and why.

What if I cannot pay the VAT I owe?

File the return on time anyway — the penalty for late filing is separate from late payment, and HMRC's time-to-pay arrangements are far easier to agree when the return is in. Interest runs on the unpaid amount from the due date.

Can I file a nil VAT return?

Yes, and you must if you had no sales or purchases in the period. A registered business that files nothing is treated as late, gets an estimated assessment, and starts collecting penalty points regardless of how quiet the quarter was.

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