Hello fellow entrepreneurs! As a chartered accountant, I spend a lot of time helping business owners decide when it’s time to join the “VAT club.” While the idea of adding 20% to your invoices might feel like a mood killer, VAT registration is often a sign that your business is leveling up!
Let’s break down the rules for the 2025/26 tax year so you can stay on the right side of HMRC while keeping your finances fun (or at least functional).
HMRC is very specific about when registration becomes mandatory. You must register for VAT if:
The 12-Month Roll: Your total VAT-taxable turnover for the last 12 months goes over the £90,000 threshold.
The 30-Day Rule: You expect your turnover to go over £90,000 in the next 30 days alone.
Pro Tip: This is a rolling 12-month period, not a fixed tax year! You need to check your total sales at the end of every month. If you’ve hit £90,001, it’s time to head to the official HMRC VAT registration page.
Is your turnover hovering around the limit? Let’s look at a real-world scenario of two different consultants, Sarah and Tom.
| Feature | Sarah (Not Registered) | Tom (Voluntary Registration) |
| Annual Turnover | £45,000 | £45,000 |
| VAT Charged to Clients | £0 | £9,000 (20%) |
| VAT Reclaimed on Expenses | £0 | -£1,200 |
| Relationship with HMRC | Low touch | Quarterly reporting |
Why would Tom register voluntarily? If Tom sells mainly to other VAT-registered businesses, they won’t mind the extra 20% (as they can reclaim it), and Tom gets to “refund” himself for the VAT he paid on his new laptop, office rent, and professional fees.
If you’ve decided (or been forced) to take the plunge, here is what the process looks like:
Get Your Gateway Account: Most businesses register online via Government Gateway.
Gather Your Stats: You’ll need your NI number, UTR (Unique Taxpayer Reference), and business bank details.
Pick Your Scheme: Will you use the Standard Scheme, or would the Flat Rate Scheme be easier for your bookkeeping?
Wait for the Certificate: HMRC will send your VAT registration number, which you must then display on all your invoices.
If you run a cafe and your turnover hits £92,000, you have to register. Suddenly, your £3.50 latte includes a slice for HMRC. Since your customers are the general public (who can’t reclaim VAT), you may have to absorb the cost or raise your prices.
If you provide services to big corporations, registering early is a “win.” It makes your business look more established (the “big player” vibe), and your corporate clients won’t care about the VAT on your bill because they’ll just claim it back anyway.
Making Tax Digital (MTD): You must use functional compatible software to keep your records and submit your VAT returns. No more hand-drawn spreadsheets for HMRC!
Trading Allowance: Don’t forget that if you are just starting a tiny side hustle, you have a £1,000 trading allowance before you even need to tell HMRC about your income.
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Godwin Pinto ACA is a chartered accountant and founder of AccTek with 20+ years of experience accounting and tax for contractors, startup and SME .
Last updated: 14 June 2026
AccTek is a member firm of the Institute of Certified Practising Accountants (ICPA). Our accountants have a wide range of qualifications and accreditations from trusted professional bodies such as the AAT, ICPA, and ACCA.
