When is a VAT return due?

For most businesses on standard quarterly accounting, the VAT return and any payment are due one calendar month and seven days after the end of the VAT period. For example, for a quarter ending 31 March, the deadline is 7 May. Businesses on the annual accounting scheme or paying by direct debit may have slightly different timings, but the one month and seven days rule is the standard.

Do I have to file a VAT return if I made no sales?

Yes. Once you are VAT-registered you must file a return for every period, even if you made no sales and have no VAT to pay. This is known as a nil return, where the relevant boxes are entered as zero. Failing to submit any return on time can trigger penalty points under HMRC penalty system, so a nil return must still be filed by the deadline.

How often do I have to submit a VAT return?

Most VAT-registered businesses submit a return every quarter, so four times a year. Some businesses, particularly those that regularly reclaim more than they charge, opt for monthly returns to get refunds sooner. The annual accounting scheme allows one return a year with interim payments on account. Your VAT periods are confirmed by HMRC when you register, and you can see them in your VAT online account.

What happens if I file my VAT return late?

Late VAT returns now fall under HMRC points-based penalty system. Each late return earns a penalty point, and once you reach the threshold for your filing frequency (for example, four points for quarterly filers) you receive a £200 penalty, with further £200 penalties for each subsequent late return until you bring your record back in order. Late payment of the VAT itself attracts separate late-payment penalties and interest.

Can I correct a mistake on a VAT return I have already submitted?

Yes. Small errors below the reporting threshold (broadly net errors under £10,000, or under 1% of your Box 6 figure up to £50,000) can usually be corrected on your next VAT return. Larger errors must be reported separately to HMRC using the error correction process. Correcting genuine mistakes promptly reduces the risk of penalties, especially if you tell HMRC before they find the error.

What Is a VAT Return? UK Definition Explained

Q: What is a VAT return?

A VAT return is the form a VAT-registered business submits to HMRC, usually once a quarter, summarising the VAT it charged on sales and the VAT it paid on purchases. The return has nine boxes. It calculates the VAT due by subtracting input VAT (Box 4) from output VAT (Box 1). If output VAT is higher you pay HMRC the difference; if input VAT is higher, HMRC refunds you. Under Making Tax Digital, VAT returns must be filed using compatible software.

Being VAT-registered comes with a rhythm. Every three months, the VAT you have been collecting on HMRC behalf and the VAT you have been paying out have to be reconciled and reported. That report is the VAT return, and despite its reputation, it boils down to one piece of arithmetic: what you charged, minus what you reclaimed.

Key takeaways

A VAT return reports output VAT charged on sales and input VAT paid on purchases.
It has nine boxes; the headline figure is output VAT minus input VAT.
Most businesses file quarterly, due one month and seven days after the period ends.
If output VAT exceeds input VAT you pay HMRC; if input VAT is higher you get a refund.
Under Making Tax Digital for VAT, returns must be filed through compatible software with digital records.

How a VAT Return Works

A UK VAT return contains nine numbered boxes, but only a handful drive the result. The core logic is simple: total the VAT you charged customers, total the VAT you paid suppliers, and pay HMRC the difference. The boxes that matter most are:

Box 1 — VAT due on sales (output VAT): the total VAT you charged customers in the period.
Box 4 — VAT reclaimed on purchases (input VAT): the total VAT you paid on business purchases.
Box 5 — Net VAT to pay or reclaim: Box 1 minus Box 4. A positive figure is paid to HMRC; a negative figure is refunded to you.
Box 6 — Total value of sales: your net (VAT-exclusive) sales for the period.
Box 7 — Total value of purchases: your net purchases.

Boxes 2, 8 and 9 deal with goods and services traded with the EU and Northern Ireland and are zero for most UK-only businesses. The vast majority of returns are decided by Boxes 1 and 4.

Most businesses file quarterly, although monthly returns (common for repayment traders) and annual accounting are also available. Whatever the period, the standard deadline for both filing and payment is one calendar month and seven days after the period ends.

Box 5 (net VAT): The headline figure on a VAT return, calculated as output VAT (Box 1) minus input VAT (Box 4). If the result is positive, that is the amount you pay HMRC; if it is negative, HMRC refunds the difference. Box 5 is what most people mean when they talk about how much VAT they owe.

Worked Example: A Quarterly VAT Return for 2025/26

Sofia runs a VAT-registered marketing consultancy. For the quarter ending 31 March 2026, her records show:

Box	Description	Amount
Box 1	Output VAT on sales	£14,000
Box 4	Input VAT on purchases	£3,200
Box 5	Net VAT due to HMRC	£10,800
Box 6	Net sales	£70,000
Box 7	Net purchases	£16,000

Sofia charged clients £14,000 of output VAT and paid £3,200 of input VAT on software, subcontractors and equipment. Her Box 5 figure is £14,000 − £3,200 = £10,800, which she must pay HMRC. Because her period ends on 31 March 2026, both the return and the payment are due by 7 May 2026. You can work out the VAT on any sale or purchase first with the VAT calculator.

Note that Sofia only ever hands over the VAT on the value she added. She collected £14,000 from clients and reclaimed £3,200, so the £10,800 paid to HMRC is funded entirely by the VAT her clients paid, not by her own income.

£14,000

Output VAT (Box 1)

£3,200

Input VAT (Box 4)

£10,800

Net VAT paid to HMRC (Box 5)

VAT Returns and Making Tax Digital

The way VAT returns are filed changed permanently under Making Tax Digital for VAT, which now applies to all VAT-registered businesses regardless of turnover. You can no longer type the nine boxes into HMRC website by hand. Instead you must keep digital records and submit the return through MTD-compatible software that connects to HMRC directly, with a digital link between your records and the figures filed.

In practice this means the VAT return is increasingly a by-product of good record-keeping rather than a separate quarterly chore. If every sale and purchase is logged digitally with its VAT treatment as it happens, the nine boxes assemble themselves. Late or missing returns now attract penalty points under HMRC points-based regime, with a financial penalty once you reach the threshold for your filing frequency, so filing on time, even a nil return, matters more than ever.

A VAT return is not a calculation you do once a quarter. It is a snapshot of records you should be keeping every day.

TapTax, UK tax glossary

Related terms

VAT — the consumption tax the return reports, including the rates and registration threshold.
Making Tax Digital — the rules requiring digital records and software-based VAT filing.
VAT calculator — work out the VAT on any sale or purchase before completing your return.

What Is a VAT Return? UK Definition Explained

How a VAT Return Works

Worked Example: A Quarterly VAT Return for 2025/26

VAT Returns and Making Tax Digital

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