How to Register for VAT in the UK: A Step-by-Step Guide for Small Businesses

28 July 2026

How to Register for VAT in the UK: A Step-by-Step Guide for Small Businesses

VAT registration is a milestone that many growing small businesses will reach at some point. Whether you are approaching the VAT threshold and registration is becoming compulsory, or you are considering voluntary registration because it makes commercial sense, understanding the process and your obligations is essential. This guide walks you through everything you need to know about registering for VAT in the UK in 2026.

What Is VAT and Who Needs to Register?

VAT, or Value Added Tax, is a consumption tax charged on most goods and services sold in the UK. Businesses that are registered for VAT collect VAT from their customers on behalf of HMRC, deduct the VAT they have paid on their own purchases and pay the difference to HMRC through regular VAT returns.

You are legally required to register for VAT if your taxable turnover exceeds the VAT threshold in any rolling 12-month period. You must also register if you believe your taxable turnover will exceed the threshold in the next 30 days alone.

What Is the VAT Threshold in 2026?

The current VAT registration threshold for 2026 is £90,000 of taxable turnover in any rolling 12-month period. This threshold was increased from £85,000 in April 2024 and has remained at this level since. It is important to note that it is your taxable turnover that matters, not your profits. If your total sales of VAT taxable goods and services exceed this figure, you are required to register.

What Happens If You Go Over the VAT Threshold?

Once your taxable turnover has exceeded the threshold, you have 30 days to notify HMRC and register for VAT. Failure to register on time can result in a penalty based on the amount of VAT you should have charged during the period you were not registered. HMRC takes late registration seriously, so it is important to monitor your turnover regularly and act promptly.

If you think you may be approaching the threshold, speak to an accountant before you cross it. At Affinity Associates Isaacs & Co, we help clients plan for VAT registration well in advance so there are no unexpected obligations.

Should You Register for VAT Voluntarily?

Voluntary VAT registration is an option available to businesses whose taxable turnover is below the threshold. There are circumstances in which it makes good commercial sense to register voluntarily:

If your customers are predominantly VAT registered businesses, they can reclaim the VAT you charge them, so being VAT registered does not disadvantage you commercially.
If you incur significant VAT on your purchases, voluntary registration allows you to reclaim that input VAT, which can improve your cash flow.
Being VAT registered can lend credibility to your business in certain sectors where clients expect it.

However, voluntary registration is not right for every business. If your customers are primarily consumers who cannot reclaim VAT, adding 20% to your prices could make you less competitive. This is a decision worth discussing with your accountant before proceeding.

How to Register for VAT: Step by Step

Create or log in to your HMRC online account. You will need a Government Gateway account. If you do not already have one, you can create one on the HMRC website.
Complete the VAT registration form (VAT1). You will need to provide details about your business, including your legal name, business address, nature of your trade and expected taxable turnover.
Choose your VAT accounting scheme. There are several schemes available, including Standard VAT, Flat Rate Scheme, Cash Accounting Scheme and Annual Accounting Scheme. Each has different rules about when VAT is accounted for, and which is most beneficial depends on your business model.
Submit your application. HMRC will process your application and send you a VAT registration certificate confirming your VAT number, effective date of registration and your VAT return dates.
Set up your accounting software for VAT. Once registered, you will need to ensure your bookkeeping software is set up correctly to record and report VAT, particularly as all VAT registered businesses must now comply with Making Tax Digital for VAT.

Making Tax Digital and VAT

All VAT registered businesses in the UK are now required to comply with Making Tax Digital for VAT. This means you must keep digital VAT records and submit your VAT returns using compatible software rather than through HMRC's older online portal. At Affinity Associates Isaacs & Co, we use and support cloud accounting platforms that are fully compliant with MTD requirements.

Get Expert VAT Guidance from Affinity Associates Isaacs & Co

VAT can be a complex area, particularly when it comes to choosing the right scheme, understanding partial exemption or managing VAT on cross border transactions. At Affinity Associates Isaacs & Co, we provide clear, practical VAT advice tailored to your business. Whether you are registering for the first time or need help managing your ongoing VAT obligations, we are here to help.

Frequently Asked Questions

How do I register for VAT in the UK?

You register for VAT online through your HMRC Government Gateway account by completing a VAT1 form. You will need details about your business including your legal name, address, nature of trade and expected taxable turnover. HMRC will then issue a VAT registration certificate confirming your VAT number and effective registration date.

What is the current VAT threshold?

The current VAT registration threshold is £90,000 of taxable turnover in any rolling 12-month period. If your taxable sales exceed this figure, you are legally required to register for VAT.

When do I need to register for VAT?

You must register for VAT when your taxable turnover exceeds £90,000 in any rolling 12-month period, or if you reasonably expect your turnover to exceed this amount in the next 30 days. You have 30 days from the point at which you become liable to notify HMRC.

What happens if I go over the VAT threshold?

You are legally required to register for VAT within 30 days of exceeding the threshold. If you fail to register on time, HMRC can charge a penalty based on the VAT that should have been collected during the period you were unregistered. It is important to monitor your turnover regularly so you can act promptly when approaching the threshold.

Should I register for VAT voluntarily?

Voluntary registration can be beneficial if your customers are predominantly VAT registered businesses, if you incur significant VAT on purchases you wish to reclaim, or if being VAT registered improves your commercial credibility. However, it may not be appropriate if your customers are primarily consumers, as it would increase your prices by 20%. Speak to an accountant to assess whether voluntary registration makes sense for your business.