How to Register for VAT in the UK: A Step-by-Step Guide for 2026

Crossing the VAT threshold is a sign your business is growing. It can also feel like a step into the unknown — new rules, new deadlines, and a set of decisions you may not have faced before.

The good news is that VAT registration is far more manageable once you understand how it works and when it applies to you. The key is to understand your position before the deadline arrives. Register at the right time and you avoid backdated VAT bills, penalties and last-minute disruption to your pricing and cash flow.

This guide explains how to register for VAT in the UK, when registration becomes mandatory, and what to do once your business is VAT registered.

What is VAT?

Value Added Tax, usually shortened to VAT, is a tax charged on most goods and services supplied in the UK by VAT-registered businesses.

Once you are registered, your business will generally:

charge VAT on taxable sales;
account for the VAT you collect from customers;
reclaim VAT on eligible business purchases;
keep proper VAT records; and
submit VAT Returns to HMRC.

VAT is not an extra tax on your profits. You collect it from your customers and pass the relevant amount to HMRC, after deducting any VAT you are entitled to reclaim. Your VAT Return works out the balance you pay or reclaim.

Who needs to register for VAT?

Registration becomes mandatory when your taxable turnover meets one of HMRC’s two tests. Either one, on its own, means you must register.

The rolling 12-month test

You must register if your total taxable turnover for the previous 12 months goes over £90,000.

This is a rolling 12-month period — not your accounting year, calendar year or tax year. At the end of each month, add up your taxable turnover for the previous 12 months. If the total tips over £90,000, you normally need to register within 30 days of the end of the month in which you crossed the threshold. Your effective date of registration is usually the first day of the second month after you went over.

Here is how that works in practice. If your taxable turnover passes £90,000 during July, you would need to notify HMRC by 30 August, and your registration would take effect from 1 September.

Checking your turnover monthly matters. Wait until your year-end and you may spot the obligation weeks too late.

The forward-looking 30-day test

You must also register if you expect your taxable turnover to go over £90,000 in the next 30 days alone.

This one catches you when you sign a large contract, win a substantial order, or see a sudden spike in sales. Under this test, you must register by the end of that 30-day period, and your effective date is the day you first realised you would cross the threshold.

As at July 2026, the VAT registration threshold is £90,000 and the deregistration threshold is £88,000.

What counts as taxable turnover?

Taxable turnover is the total value of the goods and services you sell that are not exempt from VAT or outside the scope of UK VAT.

It includes your:

standard-rated sales;
reduced-rated sales; and
zero-rated sales.

Zero-rated sales are the ones that trip people up. Even though VAT is charged at 0%, these sales still count towards the registration threshold.

VAT-exempt income — such as certain financial, insurance, healthcare and education services — does not normally count. If your business provides a mix of taxable and exempt supplies, working out the right figure gets more complicated, so it is worth classifying each income stream carefully before you decide whether you need to register.

What about overseas businesses?

Different rules can apply when a business is not established in the UK.

An overseas business making taxable supplies here may need to register regardless of turnover — the usual £90,000 threshold may not apply at all. The correct treatment depends on several factors, including:

where the supply is treated as taking place;
whether the customer accounts for VAT under the reverse charge;
whether goods are sold through an online marketplace; and
the type of goods or services supplied.

If this is your situation, it is best to check your position before you start trading in the UK, rather than assuming the domestic threshold protects you.

Should you register voluntarily?

You do not have to wait until you hit £90,000. If you make, or genuinely intend to make, taxable supplies, you can usually apply to register voluntarily below the threshold.

Whether that is a good idea comes down to your customers, costs, pricing and growth plans.

The advantages

Registering voluntarily lets you reclaim VAT on eligible business expenses. That can be well worth it if your business:

buys significant amounts of stock;
invests in equipment or technology;
pays substantial professional fees;
has high start-up costs; or
is gearing up for a period of growth.

It can also work well when most of your customers are VAT-registered businesses, because they can usually reclaim the VAT you charge — so registration has little effect on the overall cost to them. A VAT number can lend credibility too, though it is worth remembering it does not prove your turnover is above the threshold, since any business can register voluntarily at any level.

The trade-offs

Registration brings new responsibilities. Once registered, you will need to:

charge VAT correctly;
issue valid VAT invoices;
keep digital records;
use compatible accounting software;
submit VAT Returns; and
pay HMRC on time.

It can also affect your pricing. If your customers are members of the public or businesses that cannot reclaim VAT, adding 20% may make you more expensive — or you may choose to absorb some of the VAT and accept a slimmer margin.

So the decision is about more than reclaiming VAT. It should fit your wider pricing, cash-flow and growth strategy.

What do you need before registering?

Most businesses register online, and the process is far smoother if you gather your details first.

You are likely to need:

your business name and address;
your contact details;
a description of your main business activities;
the date your business started trading;
your taxable turnover for the previous 12 months;
your estimated taxable turnover for the next 12 months;
your Unique Taxpayer Reference (UTR);
your business bank account details; and
relevant Self Assessment, Corporation Tax or PAYE information.

Limited companies will normally also need their Companies House registration number and company UTR. Sole traders may need their National Insurance number and an identity document, such as a passport or driving licence.

You will also need a Government Gateway account. If you do not already have sign-in details, you can create them as part of the online process.

How to register for VAT online

Most businesses can register through HMRC’s online VAT registration service. Here is how it works, step by step.

Step 1: Sign in to Government Gateway Open the official VAT registration service through GOV.UK and sign in with your Government Gateway details. Make sure you use the account linked to the correct business.

Step 2: Confirm your business structure Tell HMRC whether you are registering as a sole trader, limited company, partnership or another type of organisation. The information you are asked for depends on the structure you choose.

Step 3: Enter your business information You will provide your business name, trading address, contact details and main activities. Describe what you do accurately — this helps HMRC understand the nature of your taxable supplies.

Step 4: Provide your turnover figures Enter your recent and expected turnover, and explain why you are registering: because you have already crossed the threshold, because you expect to within the next 30 days, or because you are registering voluntarily. Take care here, as these figures can affect your registration date.

Step 5: Enter the effective date For mandatory registration, the effective date is set by the relevant HMRC test — it is not simply a date you pick. If you are registering voluntarily, you can request a suitable date, and HMRC may agree to an earlier one, subject to their approval and the usual time limits. Either way, choose carefully, because this date determines when you must start accounting for VAT.

Step 6: Provide tax and bank details Depending on your business type, HMRC may ask for your UTR, National Insurance number or company registration number. You will also provide bank details. Once you are registered, VAT Direct Debit payments are normally set up separately through your VAT online account.

Step 7: Consider the available VAT schemes Some businesses benefit from a VAT accounting scheme, such as:

Cash Accounting;
Annual Accounting; and
the Flat Rate Scheme.

Each has its own eligibility rules and can change the timing or calculation of your VAT payments. The right choice depends on your turnover, margins, customer payment patterns and costs — a scheme that simplifies life for one business can increase the VAT payable by another.

Step 8: Review and submit Check everything before you submit, paying particular attention to:

your taxable turnover;
the reason for registration;
the effective date;
your business activity; and
your contact details.

Registration is free. An accountant or tax adviser can also submit the application and deal with HMRC on your behalf. A few registrations — including certain VAT groups, corporate divisions, and applications for a registration exception — need additional or postal forms.

What happens after VAT registration?

Once HMRC approves your application, you will receive:

a nine-digit VAT registration number;
a VAT registration certificate;
confirmation of your effective registration date; and
details of your first VAT Return period.

Your VAT number must appear on all the valid VAT invoices you raise.

Charging VAT while you wait for your number

Your VAT obligations begin on your effective registration date, even if HMRC has not yet issued your number.

You cannot show VAT separately on an invoice until the number arrives, but you still have to account for VAT on taxable sales from the effective date. A common approach is to raise invoices at the higher, VAT-inclusive amount and then reissue them as proper VAT invoices once your number comes through. It is worth handling this carefully where you have already agreed prices or contracts with customers.

Reclaiming VAT on earlier purchases

You may be able to reclaim VAT on some costs incurred before you registered. Subject to the usual conditions, you can generally reclaim VAT on:

goods bought up to four years before registration, provided you still hold them or used them to make goods you still hold; and
services received up to six months before registration.

The purchases must relate to your taxable business activities, and you need to keep the relevant VAT invoices and evidence. Eligible pre-registration VAT is normally claimed on your first VAT Return.

VAT Returns and Making Tax Digital

VAT Returns are usually submitted every three months. The normal deadline for submitting and paying is one calendar month and seven days after the end of the VAT period.

You must submit a return even if:

there is no VAT to pay;
you made no sales; or
you are due a repayment.

Newly registered businesses are normally enrolled into Making Tax Digital (MTD) for VAT automatically, unless HMRC grants an exemption. In practice, that means you must:

keep the required VAT records digitally;
use MTD-compatible software; and
submit your returns through that software.

Spreadsheets can still play a part, but they must connect to HMRC through compatible bridging software with the right digital links. As a rule, keep your VAT records for at least six years.

Common VAT registration mistakes

Registering too late The threshold works over a rolling 12-month period. Check your turnover only at year-end and you can sail past a deadline without noticing — leaving you with backdated VAT and possible penalties.

Confusing turnover with profit Registration is based on taxable turnover, not the profit left after your expenses. You can be required to register even when your profit is modest.

Treating zero-rated sales as exempt Zero-rated sales count towards the threshold; exempt sales generally do not. Mixing the two up can lead to the wrong registration decision.

Using the wrong effective date Your effective date decides when VAT becomes due on your sales. Get it wrong and you can end up undercharging customers, overcharging VAT, or having to correct earlier invoices and returns.

Choosing a scheme without checking the numbers The Flat Rate, Cash Accounting and Annual Accounting Schemes can all be useful, but none suits every business. Check the eligibility rules and work out the likely effect before you join.

Leaving MTD to the last minute Your digital records and compatible software should be ready before your first VAT Return is due. Waiting until the deadline only adds pressure and raises the risk of errors.

How we can help

VAT registration is rarely just an administrative box to tick. The timing, the effective date and the accounting method you choose all feed into your prices, your cash flow and your reporting.

At J. Dauman & Co., we help you get it right by:

keeping an eye on whether your turnover is approaching the threshold;
calculating your correct taxable turnover;
weighing up whether voluntary registration is right for you;
confirming the correct registration date;
completing your HMRC VAT registration;
reviewing which VAT scheme fits your business;
setting up digital records and compatible software; and
managing your ongoing VAT Returns.

The aim is not simply to complete the registration, but to make sure your VAT position works with the way your business runs and grows.

Frequently asked questions

How long does VAT registration take? It varies, depending on your application and whether HMRC needs more information. HMRC provides an online service where you can check when to expect a reply. If 40 working days pass without a response, HMRC advises contacting its VAT Registration Service.

Can I register before reaching the VAT threshold? Yes. You can usually register voluntarily if you make, or genuinely intend to make, taxable supplies. HMRC may ask for evidence that you are carrying on, or preparing to carry on, a genuine business.

Can a sole trader register for VAT? Yes. VAT registration is open to sole traders as well as limited companies, partnerships and other organisations. A sole trader registers in their own name as the person running the business.

Do I need a business bank account to register? You will need to provide bank account details when you register. A sole trader is not required to open a separate business account just because of VAT registration, though keeping personal and business transactions apart usually makes bookkeeping much easier. A limited company should use an account in the company’s name.

Can I reclaim VAT from before I registered? Potentially, yes. Subject to the usual conditions, you may be able to reclaim VAT on qualifying goods bought up to four years before registration, and services received up to six months before. You must keep the relevant VAT invoices, and the purchases must relate to your taxable business activities.

Can I cancel my VAT registration later? Yes. You can apply to cancel voluntarily if you expect your taxable turnover to fall below the £88,000 deregistration threshold, and you must normally cancel if you stop trading or stop making taxable supplies. A final VAT Return is usually required, and you may need to account for VAT on certain stock and assets you still hold when the registration ends.

Preparing your business for VAT

VAT registration becomes mandatory once your taxable turnover goes over £90,000 across a rolling 12-month period, or when you expect it to exceed £90,000 in the next 30 days alone.

Businesses below the threshold can register voluntarily, but that decision should rest on more than the chance to reclaim VAT. Your customers, pricing, costs, cash flow and future plans all come into it.

Preparing early gives you time to calculate the right turnover figure, choose the right effective date, and put the right systems in place before your first VAT Return is due.

If you are approaching the threshold, or you are weighing up whether voluntary registration would benefit your business, we would be glad to help you understand your position and take the next step with confidence.

Every business is different, and the right time to register for VAT depends on more than turnover alone. At J. Dauman & Co., we provide practical advice to help you decide when to register, select the right VAT scheme and meet your ongoing compliance obligations.

Get in touch with J. Dauman & Co. to discuss your VAT registration.