How to Fill Out and Submit the VAT Registration Form (VAT1)

The VAT1 is HMRC’s application to register a UK business for Value Added Tax, and for most businesses you complete it online through the Government Gateway rather than on paper. To fill out the VAT1 form, sign in (or create) a Government Gateway account, work through the online sections covering your business structure, identity, turnover, and activity, then submit a digital declaration. A paper VAT1 is only available if HMRC agrees your circumstances qualify.

What to Gather Before You Start

The online service saves your progress, but the application moves faster when every detail is in front of you. What you need depends on your business structure.¹

For a limited company, have ready:

Your company registration number from Companies House.
Your ten-digit Unique Taxpayer Reference (UTR) issued by HMRC for Corporation Tax.
Bank account details in the company’s name: account name, sort code, and account number.
Annual turnover to date and estimated taxable turnover for the next twelve months.
Details of any Self Assessment, Corporation Tax, and PAYE registrations.

For a sole trader or partnership, have ready:

Your National Insurance number.
An identity document such as a passport or driving licence.
Bank account details: sort code, account number, and account name.
Your UTR if you have one from Self Assessment.
The same annual and twelve-month projected turnover figures.

Every applicant also needs a Standard Industrial Classification (SIC) code, a five-digit code from a government list that identifies your trade.² Search the condensed list on the Companies House site before you begin. Choosing an inappropriate code won’t stop your application, but it can prompt follow-up questions from HMRC that slow things down.

Filling In the Online VAT1

You reach the form through the VAT registration service on GOV.UK. Sign in with your Government Gateway user ID; if you don’t have one, the system creates it during your first sign-in, and you’ll set a password and verify your identity using the details listed above.¹

The form is broken into sections that follow the shape of the paper VAT1. You’ll enter:

Your business structure (limited company, sole trader, partnership, and so on).
Business and contact details, including trading name if different from the legal name.
The date your taxable turnover exceeded the £90,000 threshold, or the date you first expected to exceed it in the next 30 days.
Your estimated taxable turnover for the coming twelve months.
Your SIC code and a plain description of what the business does.
Bank account details for VAT repayments.

The system validates as you go. A mismatched postcode, a UTR with the wrong number of digits, or dates that don’t line up will trigger an error on the spot, so read the prompts carefully rather than clicking past them. If a figure is missing, save and return later; the application resumes where you left off.

Write the business activity description in concrete terms. A vague entry is one of the common reasons HMRC pauses an application to ask questions. Say what you sell or supply, to whom, and how, rather than reusing marketing copy.

At the end you make a digital declaration confirming the information is accurate. It carries the same legal weight as a signed paper form. The confirmation screen displays a reference number; save or print it as proof of submission.

Supplementary Forms You May Need to Attach

Some situations require an extra form uploaded during the online registration or sent with a paper VAT1. Missing a required supplement is one of the most common reasons an application stalls.

VAT2 collects each partner’s full name, date of birth, address, National Insurance number, and signature, with room for up to ten partners. HMRC cannot finalise a partnership registration without it.³
VAT1A is for an EU-based business selling goods into Northern Ireland under distance selling arrangements.⁴
VAT1B covers businesses making relevant acquisitions of goods into Northern Ireland from EU member states.
VAT1C is required when you plan to dispose of goods on which you or a predecessor claimed a VAT repayment under Directive 2008/9 or 13th Directive refund arrangements.⁵

If your situation involves a partnership, cross-border goods movement into Northern Ireland, or assets tied to a previous directive refund, attach the relevant form from the start rather than waiting for HMRC to ask.

When You Can Submit a Paper VAT1

A paper VAT1 is the exception. You cannot download a blank form and post it in. You must contact HMRC’s VAT helpline, explain why the online service won’t work for you, and wait for HMRC to decide whether to issue a paper form.⁶

HMRC accepts paper applications from businesses in specific categories:

Limited liability partnerships registering as the representative member of a VAT group.
Corporate bodies registering divisions or business units under separate VAT numbers.
Overseas partnerships applying from outside the UK.
Local authorities, parish councils, and district councils.
Insolvency practitioners registering a business.
Businesses applying for a registration exception.

You can also apply by post if you cannot use the online service because of age, a health condition, disability, location, religious objection to computers, or lack of internet access.⁶ If HMRC agrees, they post the form to you. Completed paper forms go to: BT VAT, HM Revenue and Customs, BX9 1WR, United Kingdom.⁷

After You Submit

Around 70% of applications are processed within 10 to 14 days. Most of the remainder are delayed because the application was incomplete or inconsistent, and a small number of complex cases take up to 10 weeks or longer.⁸

Once HMRC approves the application, it issues form VAT4, the Certificate of Registration. This confirms your nine-digit VAT number and your effective date of registration.⁹ From that effective date onward, the VAT number must appear on all VAT invoices and official business correspondence. The certificate is an acknowledgement rather than a grant of status: your obligation to charge VAT runs from the effective date even if the certificate arrives after it.

Every VAT-registered business now falls within Making Tax Digital (MTD) for VAT unless specifically exempt. That has applied since April 2022, regardless of turnover. You must keep VAT records digitally in compatible software and file returns through that software, not through the older HMRC portal. Free and paid options exist, but a plain spreadsheet only works when paired with bridging software that can submit through HMRC’s digital interface. Budget for software before your first return is due, not after.

Getting the Timing Right

The date you enter on the form as the trigger for registration is not cosmetic. VAT registration becomes compulsory once your taxable turnover crosses £90,000.¹⁰ HMRC applies two tests. The backward look: at the end of each month, total your taxable supplies over the previous twelve months, and if the total exceeds £90,000 you’re liable. The forward look: if at any point you expect taxable supplies in the next 30 days alone to exceed the threshold, you must register from the date you first form that expectation.¹¹

Under the backward look, you must notify HMRC within 30 days of the end of the month your turnover crossed the threshold, and the effective date is the first day of the second month after you crossed it.¹² If your rolling turnover first exceeded £90,000 in July, notification is due by 30 August and registration takes effect from 1 September.

Register late and you owe VAT on all sales from the date you should have been registered, not from the date you eventually applied.¹² HMRC also charges a penalty as a percentage of the net VAT due for the period of failure:

Up to 9 months late: 5% of the VAT due.
More than 9 but not more than 18 months late: 10%.
More than 18 months late: 15%.

The minimum penalty is £50.¹³ Where HMRC decides the failure was deliberate rather than careless, higher penalties under Schedule 41 of the Finance Act 2008 apply, reaching up to 100% of the VAT due in cases of deliberate concealment. An unprompted disclosure, made before HMRC discovers the failure, significantly reduces the percentage. If you realise you’ve crossed the threshold and haven’t registered, apply straight away; every additional month raises both the back-VAT bill and the penalty rate.

1
GOV.UK. How to Register for VAT
2
Companies House. Nature of Business: Standard Industrial Classification (SIC) Codes
3
GOV.UK. Provide Partnership Details When You Register for VAT
4
GOV.UK. Register for VAT if You’re Distance Selling Into Northern Ireland
5
GOV.UK. Register for VAT if Supplying Goods Under Certain Directives
6
GOV.UK. Register for VAT by Post
7
GOV.UK. VAT: Registration Applications and Changes Enquiries
8
Association of Taxation Technicians. VAT Registration
9
GOV.UK. VAT Registration Manual – VATREG03650 – Certificate of Registration
10
GOV.UK. Increasing the VAT Registration Threshold
11
GOV.UK. VATREG25100 – Effective Date of Registration (EDR): Calculating
12
GOV.UK. When to Register for VAT
13
GOV.UK. Late VAT Registration Penalty (VAT Notice 700/41)