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Would voluntary VAT registration pay off?

A simple estimate based on GOV.UK guidance on voluntary registration.

Who can register voluntarily

  • Businesses with VAT taxable turnover below £90,000 that make, or intend to make, taxable supplies.
  • Not businesses that only make exempt or out of scope supplies.
  • Once registered, you must charge VAT, keep digital records and file VAT returns through Making Tax Digital software, the same as any registered business.

When it usually pays off

  • Your customers are VAT-registered businesses. They reclaim the VAT you charge, so your prices do not effectively rise for them.
  • You have significant costs with VAT, such as equipment, stock or professional fees, which you can reclaim.
  • You sell zero-rated goods. You charge 0% but reclaim VAT on your costs, so you may get regular repayments.
  • You are close to £90,000 and want to set up VAT before you have to.

When it usually costs you

  • You sell to consumers, who cannot reclaim VAT. You either raise prices by 20% or absorb the VAT and earn less.
  • Your costs carry little VAT, so there is little to reclaim.
  • You want to avoid the admin of VAT returns and invoices.

Reclaiming costs from before you register

  • You can ask for voluntary registration to be backdated by up to 4 years.
  • You can usually reclaim VAT on goods bought up to 4 years before registration that you still hold, and on services bought up to 6 months before.
  • If you backdate, you also owe VAT on your sales from that date, so do the sums first.

See reclaiming VAT on pre-registration expenses.

The Flat Rate Scheme

Small businesses can use the Flat Rate Scheme, paying a fixed percentage of turnover instead of working out VAT on every sale and purchase. It can suit some service businesses, but limited cost traders pay a higher rate. See flat rate vs standard VAT.

Registered voluntarily? File from your spreadsheet, from £5 a month

Swift VAT Pro files your VAT returns through Making Tax Digital, with every box checked and reminders before each deadline.

  1. Connect to HMRC on HMRC's own page with your Government Gateway sign-in. We never see that password.
  2. See your VAT periods, due dates, amounts owed and payments, read from HMRC.
  3. Upload your nine box totals as a CSV. Box 3 and Box 5 are worked out and every box is checked.
  4. Submit and keep HMRC's receipt. Reminder emails arrive before each due date.
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Final thoughts

Voluntary registration is a pricing decision as much as a tax one. If your customers are VAT registered or your costs carry a lot of VAT, it usually pays. If you sell to consumers, work out what 20% does to your prices before you register.

Disclaimer: This guide gives general information, not advice for your business. If you are unsure, speak to an accountant or contact HMRC.

Frequently asked questions

Checked against GOV.UK guidance on registering for VAT, VAT Notice 700/1 and the VAT Flat Rate Scheme. November 2026.

Can I register for VAT voluntarily?
Yes, if your VAT taxable turnover is below £90,000 and you make, or intend to make, taxable supplies. You cannot register if you only make exempt or out of scope supplies.

Is voluntary VAT registration worth it?
Usually, if your customers are VAT-registered businesses or your costs carry a lot of VAT. Usually not, if you sell to consumers who cannot reclaim VAT and you would have to raise prices or absorb the VAT.

Can I backdate voluntary VAT registration?
You can apply for voluntary registration to be backdated by up to 4 years. You then owe VAT on your sales from that date as well as reclaiming VAT on costs.

Do I need MTD software if I register voluntarily?
Yes. Voluntarily registered businesses follow the same rules: digital records and VAT returns filed through Making Tax Digital software.

Can I reclaim VAT on costs from before I registered?
Usually on goods you still hold bought up to 4 years before registration, and on services bought up to 6 months before.

Registered voluntarily? File from your spreadsheet, from £5 a month.

Swift VAT Pro files your return to HMRC from the spreadsheet you already keep. From £5 a month.

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