How to File a VAT Return in the UK - Guide for Sole Traders

Once you are VAT-registered in the UK, you need to file VAT returns and pay any VAT due to HMRC on a regular basis. For most sole traders, this means once every three months.

This guide explains exactly how the process works - including the Making Tax Digital requirement that all VAT-registered businesses must now use.

How often do I file a VAT return in the UK?

Most VAT-registered businesses file quarterly VAT returns. HMRC assigns you a VAT period when you register - your returns will be due on a stagger 1, 2, or 3 basis, meaning your quarter ends on one of three sets of dates throughout the year.

Some businesses file annual returns (if they pay by monthly direct debit instalments) or monthly returns (if they are regularly in a VAT repayment position). For most sole trader tradesmen, quarterly is standard.

If your VAT quarter ends on 31 March, your return and payment are due by 7 May. If it ends 30 June, the deadline is 7 August. Always check your specific dates in your HMRC VAT account.

What is Making Tax Digital for VAT?

Making Tax Digital (MTD) for VAT is HMRC's requirement that all VAT-registered businesses:

1. Keep digital VAT records (not paper records)
2. File VAT returns using MTD-compatible software (not the old HMRC portal)

MTD has applied to all VAT-registered businesses since April 2022. You cannot file a VAT return through the old HMRC website anymore. You need software that connects directly to HMRC's systems.

MTD-compatible software includes accounting packages (Xero, QuickBooks, FreeAgent, Sage) and dedicated VAT bridging software. Some sole traders use bridging software that pulls data from their own spreadsheets and submits it digitally.

How to file a VAT return step by step

Step 1: Set up MTD

You no longer need to sign up for MTD yourself - HMRC signs VAT-registered businesses up automatically. Choose MTD-compatible software and connect it to your HMRC account before your first return is due.

Step 2: Collect your VAT data for the period

Gather all your sales invoices (output VAT) and purchase receipts (input VAT) for the quarter. Your total output VAT is the VAT you charged customers. Your total input VAT is the VAT you paid on business expenses and materials.

Step 3: Complete the nine boxes

Every UK VAT return has nine boxes. For most sole traders, the key ones are:

On domestic reverse charge work, the subcontractor puts the net value in Box 6 but no VAT in Box 1. The contractor puts the VAT in Box 1, reclaims it in Box 4, and puts the net value in Box 7. See our CIS guide for when the reverse charge applies.

Step 4: Submit through your MTD software

Your MTD-compatible software submits the return directly to HMRC. You will get a confirmation reference once it is accepted.

Step 5: Pay by the deadline

Pay any VAT due by the same deadline as the return (1 month + 7 days after the quarter end). You can pay by direct debit, bank transfer, or online banking.

What if I am owed a VAT repayment?

If your input VAT (what you paid on expenses and materials) is greater than your output VAT (what you charged customers), HMRC owes you a refund. This commonly happens if you bought a lot of materials or equipment in a quarter.

Submit your return as normal. HMRC usually makes repayments within 30 days of receiving your return, and it can take longer if they need to check it. If you are regularly in a repayment position (for example, you do a lot of new builds), you can apply to file monthly returns to get repayments more quickly.

What are the penalties for late filing?

HMRC introduced a new penalty points system from January 2023:

• Each late submission earns a penalty point
• When you reach the threshold for your filing frequency (2 points for annual, 4 for quarterly, 5 for monthly), HMRC charges a £200 penalty
• Every subsequent late return earns a further £200 penalty
• Points can be removed after a period of filing on time - GOV.UK explains how

There are also late payment penalties. The first is charged once VAT is more than 15 days overdue and grows if it is still unpaid at day 30; after that, a second penalty builds up daily until you pay. HMRC also charges late payment interest from the first day the VAT is overdue. Check GOV.UK for the current rates.

Can I use the VAT Flat Rate Scheme?

The VAT Flat Rate Scheme (FRS) is available to businesses with taxable turnover under £150,000 per year. Under FRS, instead of calculating your exact output and input VAT each quarter, you pay a fixed percentage of your gross turnover to HMRC and keep the difference.

The flat rate for “general building or construction services” is 9.5%, but only where materials are at least 10% of your turnover for that work - labour-only building work is 14.5%. If you spend very little on goods (under 2% of your turnover, or under £1,000 a year), you count as a limited cost business and pay 16.5%. Whether FRS is beneficial depends on your material costs and profit margins. An accountant can run the numbers for your specific situation.

For the full picture on UK VAT, see our UK VAT guide for tradesmen.