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When Do You Need to Register for VAT in the UK?

This guide explains the thresholds for registering for VAT in the United Kingdom.
Updated 4 months ago

Overview

In the UK (Great Britain and Northern Ireland), you must register for VAT with HM Revenue and Customs (HMRC) if your VAT-taxable turnover exceeds a specific threshold. As of April 1, 2024, the threshold is £90,000.

Registration is not just about your annual accounts; it is based on a "rolling" 12-month period. Failing to register on time can result in significant financial penalties.


Mandatory Registration: The Two Tests

There are two scenarios where registration becomes compulsory when operating a business in the United Kingdom. You must monitor your turnover monthly to ensure you don’t miss these triggers.

1. The Backward Look (Rolling 12-Month Test)

You must register if your total VAT-taxable turnover for the last 12 months was over £90,000.

  • How to calculate: At the end of every month, look back at the previous 12 months. If the cumulative turnover exceeds £90,000, you have hit the threshold.

  • Deadline: You must notify HMRC within 30 days of the end of the month in which you went over the limit.

2. The Forward Look (30-Day Test)

You must register if you expect your total VAT-taxable turnover to exceed £90,000 in the next 30 days alone.

  • Example: You sign a significant contract that will result in more than £90,000 in billings within the next month.

  • Deadline: You must notify HMRC by the end of that 30-day period.


Exceptions to the Threshold

The £90,000 threshold does not apply to everyone. You must register immediately, regardless of turnover, if:

  • Non-Established Taxable Persons (NETPs): Your business is based outside the UK, but you supply goods or services to the UK.

  • Acquisitions: You take over a business that is already VAT-registered.

Note: "Taxable turnover" includes all goods and services you sell that are not exempt from VAT. It includes zero-rated items, but does not include exempt items like insurance or health services.


Voluntary Registration

Even if your turnover is below £90,000, you can choose to register for VAT voluntarily. This is often beneficial for specific business models:

  • Reclaiming VAT: You can reclaim the VAT you pay on business expenses (e.g., equipment, stock, or professional services).

  • B2B Credibility: Being VAT-registered can make your business appear larger and more established to corporate clients.

  • Zero-Rated Goods: If you sell zero-rated goods (like books or children's clothes), you won't charge VAT to customers, but you can still reclaim VAT on your own costs.


What Happens After You Register?

Once you receive your VAT certificate and number, your business must comply with several ongoing requirements:

  1. Charge VAT: You must charge the correct rate of VAT ( 20% for goods and services; 5% for domestic home energy; and 0% for essential groceries) on your taxable sales.

  2. Making Tax Digital (MTD): You are required to keep digital records and use MTD-compatible software (like Xero or QuickBooks) to submit your VAT returns to HMRC.

  3. VAT Returns: You must typically submit a VAT return every three months, even if you have no VAT to pay or reclaim for that period.


Summary Checklist

Condition

Threshold

Action Required

Past 12 months turnover

Over £90,000

Register within 30 days of the month-end

Next 30 days turnover

Over £90,000

Register by the end of that 30-day period

Based outside the UK

£0

Register before making your first UK sale

Under the limit

Under £90,000

Optional (Voluntary Registration)

Note:
For Services

VAT on services (like consulting, software, or legal advice) is uniform across the entire UK. Whether you are in London (GB) or Belfast (NI), you follow the same UK VAT rules.

For Goods

This is where Great Britain and the UK diverge. To avoid a "hard border" on the island of Ireland:

  • Great Britain (GB): Operates entirely under UK VAT law. It is treated as a "third country" (outside the EU) for trade.

  • Northern Ireland (NI): Remains part of the UK VAT system but also follows EU VAT rules for goods.


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