UK VAT Registration 2026: £90,000 Threshold, MTD, and Reverse Charge

When UK freelancers must register for VAT

The UK VAT registration threshold has been frozen at £90,000 of taxable turnover in any rolling 12-month period since April 2024. Once your taxable turnover crosses that line — measured over any 12 consecutive months, not just your financial year — you must register with HMRC within 30 days, with the effective date of registration being the date you crossed the threshold or the date you reasonably should have known you would.

Many freelancers stay below the threshold by choice, since being VAT-registered adds administrative burden (quarterly MTD-compatible VAT returns) and makes you 20% more expensive to VAT-exempt clients like small private households, schools, and charities.

Making Tax Digital (MTD): what changed in 2026

Since April 2022, all VAT-registered UK businesses must keep digital records and file VAT returns through MTD-compatible software. The 2026 rule extends this to businesses with turnover above the threshold but who voluntarily register for VAT — they must also use MTD-compliant processes.

Your invoice format does not change under MTD. HMRC accepts PDF invoices as long as the digital flow from issuance to bookkeeping to VAT return does not involve manual re-keying. Using an invoice generator that produces structured PDFs with line-level VAT breakdown makes MTD compliance significantly easier.

Reverse charge for construction services (CIS)

Since March 2021, the Construction Industry Scheme reverse charge applies to most construction services between VAT-registered contractors and subcontractors. Under the reverse charge, the subcontractor invoices at 0% VAT with the note 'Reverse charge: customer to account for VAT to HMRC', and the contractor self-accounts for the VAT on their own VAT return.

If you are a UK plumber, electrician, carpenter, or other tradesperson subcontracting to a VAT-registered contractor, your invoice needs the reverse charge wording. Failure to apply it correctly shifts the VAT liability back to you as the supplier.

Practical invoicing tips for UK sole traders

Three practical rules reduce HMRC compliance friction. First, always show your 9-digit VAT number on every VAT invoice, even if the client doesn't ask for it. Second, use sequential invoice numbers without gaps — HMRC systems flag gaps as potential missing invoices during audits. Third, keep VAT-exclusive and VAT-inclusive amounts separated clearly on each line — your invoice generator should show 'Net | VAT | Gross' for every line, with the per-line VAT rate editable.