VAT Registration Process: Step-by-Step Guide for Businesses

The VAT registration process is quicker than most business owners expect, but the answers you give along the way decide when you must start charging VAT, which scheme you are on and how your returns will run. Getting them right first time saves a lot of correcting later. This guide takes you through the VAT registration process step by step, from the details to gather before you start to the first jobs once your VAT number arrives.

Before you start: do you need to register?

You must register once your VAT taxable turnover goes over £90,000 in a rolling 12-month period, or when you expect to go over £90,000 in the next 30 days alone. You can also register voluntarily below that figure. If you are unsure which applies, read our guide to the VAT registration threshold first, because the test you meet decides your deadline and your effective date.

Step 1: Gather your details

The VAT registration process asks for information about the business and the people behind it. Have this to hand before you begin:

• Business details: legal name, trading name, principal place of business, phone number and email.
• Tax references: your Unique Taxpayer Reference (UTR) and, for a limited company, the company registration number.
• Personal details: National Insurance number and date of birth for sole traders and partners; details of the directors for a company.
• Bank details: the business account HMRC should use for any VAT repayments.
• Turnover figures: your taxable turnover for the last 12 months and your best estimate for the next 12.
• What you do: a clear description of your business activity, and whether you buy or sell goods with other countries.
• Associated businesses: any other business you have run in the last two years, or that is linked to this one.

Step 2: Sign in to your HMRC business tax account

Most businesses complete the VAT registration process online through HMRC's business tax account, using their Government Gateway or GOV.UK One Login details. Limited companies usually already have an account from registering for Corporation Tax. If you do not, you will create one at the start.

An accountant can also register on your behalf through HMRC's agent services. If you use an agent, they will need the same details and your authority to act.

When a paper form is needed

A small number of businesses cannot register online and must use a paper form instead, for example some partnerships, groups registering together, and businesses joining the Agricultural Flat Rate Scheme. HMRC will tell you if your answers mean the online route is not available.

Step 3: Answer the eligibility questions

The first part of the VAT registration process works out why you are registering. You will be asked:

• whether you have gone over the threshold in the last 12 months, and in which month
• whether you expect to go over the threshold in the next 30 days
• whether you are applying voluntarily
• whether you are taking over a business that was already VAT-registered

Answer carefully. If you took over an existing business as a going concern, you may be able to keep its VAT number, and you must count its turnover towards the threshold.

Step 4: Choose your effective date of registration

Your effective date of registration is the date from which you must charge VAT on your sales and can reclaim VAT on your costs. The rules are:

• Gone over in the last 12 months: the first day of the second month after the month you went over.
• Will go over in the next 30 days: the date you realised you would go over.
• Voluntary registration: a date you choose, which can be up to four years in the past.

Choosing an earlier voluntary date can let you reclaim more VAT on past costs, but you would then owe VAT on sales from that date too. Run the numbers before picking a backdated date.

Step 5: Describe your business activity

HMRC asks you to describe your main business activity and to choose the closest trade classification. This affects how HMRC understands your returns, and it decides your percentage if you join the Flat Rate Scheme. Pick the category that matches what you actually do most of the time, not the one with the lowest flat rate.

Step 6: Choose a VAT scheme

Part of the VAT registration process is deciding whether to use a scheme alongside standard VAT accounting:

• Flat Rate Scheme (taxable turnover up to £150,000): pay HMRC a fixed percentage of gross takings. Businesses with very low spending on goods pay the limited cost trader rate of 16.5%.
• Cash accounting (taxable turnover up to £1.35 million): pay VAT when your customer pays you. Good for businesses that wait a long time to be paid.
• Annual accounting (taxable turnover up to £1.35 million): one return a year with instalments through the year.

Some schemes are chosen during registration and others are applied for separately afterwards. If you are not sure, standard VAT accounting is the safe default while you get advice.

Step 7: Check and submit

Before you submit, check every answer, especially your effective date, turnover figures and bank details. A wrong date is the most common reason for having to correct a registration later, and it can leave you owing VAT you never charged.

Once submitted, you get an acknowledgement reference. Keep it, because you will need it if you contact HMRC about your application.

Step 8: Wait for your VAT number

HMRC sends your VAT registration certificate to your business tax account. It shows your VAT number, your effective date of registration and the date your first VAT return is due. Processing times vary, and HMRC may ask further questions to check the application is genuine. HMRC publishes its current processing times on GOV.UK.

Trading while you wait

Until your VAT number arrives, you must not show VAT on your invoices or charge a separate VAT amount. You can increase your prices to cover the VAT you will owe from your effective date, then reissue proper VAT invoices to VAT-registered customers once you have your number, so they can reclaim it.

Step 9: Your first jobs once registered

The VAT registration process does not end with the certificate. Before your first return is due:

1. Update your invoices to show your VAT number and the VAT on each line.
2. Set up Making Tax Digital software and link it to HMRC, because every VAT return must be filed through compatible software.
3. Set up a direct debit for VAT payments if you want HMRC to collect them automatically.
4. Gather pre-registration invoices for goods bought in the last four years that you still have, and services bought in the last six months, so you can reclaim that VAT.
5. Diary your deadlines. Returns and payments are due one calendar month and seven days after each VAT period ends.

Our guide on making VAT returns easy covers good habits from your first quarter.

Sole traders, partnerships and companies

The VAT registration process is broadly the same for every type of business, but a few details differ.

Sole traders

A sole trader registers the person, not a business name. All the trades you run as a sole trader count together towards the threshold, so a hairdresser who also sells products online must add both income streams. If you later move the business into a limited company, the company needs its own VAT registration, although it can sometimes take over your existing number.

Partnerships

A partnership registers once for the whole firm, and each partner's details are given on the application. Some partnership registrations still need a paper form alongside the online application, so allow extra time.

Limited companies

A limited company registers in its own right, using its company registration number and Corporation Tax UTR. HMRC checks the details against the Companies House register, so the registered office, directors and company name must match exactly. A newly formed company with no trading history should explain its expected turnover clearly, because new companies are more likely to be asked for evidence of genuine trading before a number is issued.

How long does the VAT registration process take?

Filling in the online application usually takes under an hour when you have your details ready. HMRC's checks then take longer, and some applications are held for extra verification, particularly new companies and businesses with links overseas. Applying as soon as you know you need to register gives you the most room before your first return.

Mistakes that slow the VAT registration process down

• Giving a trading address that does not match Companies House or HMRC records.
• Leaving out associated businesses run by the same people.
• Vague business descriptions that prompt HMRC to ask more questions.
• Bank details for a personal account rather than the business account.
• Applying weeks after the deadline, which leaves VAT owed on past sales.

Where to find HMRC's rules

HMRC's own walkthrough of the VAT registration process is on GOV.UK under how to register for VAT.

Let us handle your VAT registration

We complete the VAT registration process for you: checking your effective date, choosing the right scheme, and making sure your answers match your Companies House and HMRC records so the application goes through cleanly. Visit our VAT registration service to get started.