Tax Registration in United Kingdom
Registration with HMRC for Corporation Tax — required within 3 months of starting to do business, not automatic on incorporation — and for VAT. VAT registration is compulsory once taxable turnover in the last 12 months exceeds £90,000, or is expected to exceed £90,000 in the next 30 days; you must register within 30 days of the end of the month the threshold was crossed. Voluntary registration below the threshold is possible and is often worth it for a B2B or exporting business. A sole trader registers for Self Assessment (free) once self-employment income exceeds the £1,000 trading allowance; an ordinary partnership registers through its nominated partner (free) and each partner registers separately; LLP members register for Self Assessment because the LLP itself is tax-transparent. The 5–20 day window is Comriq's delivery window — HMRC publishes no processing service level.
5–20 business days
GBP
What we will need from you
Upload these once. They are stored encrypted and reused across every service you buy from us.
Certificate of incorporation, company number and the Corporation Tax UTR
Taxable turnover for the last 12 months, expected turnover and the business activity
Drives whether VAT registration is compulsory (over £90,000) or voluntary.
UK business bank account details
National Insurance number and personal details
For a sole trader, each partner in an ordinary partnership, and each LLP member registering for Self Assessment.
Cost breakdown
Our fee and the government’s are always separate lines. Government fees are passed through at exactly what the authority charges — we add nothing to them.
| Corporation Tax and VAT registration with HMRCone line of this schedule appliesHMRC publishes no fee schedule for Corporation Tax or VAT registration on the pages rendered in the 10-Sep-2026 research, so no amount — not even zero — is asserted here. What IS verified is the obligation: register for Corporation Tax within 3 months of starting to do business, and for VAT within 30 days of the end of the month taxable turnover passed £90,000. | Confirmed before payment |
| Sole trader registration with HMRC (Self Assessment)only if it appliesVERIFIED at gov.uk/set-up-sole-trader: registration with HMRC for Self Assessment is free of charge, and is required once self-employment income exceeds the £1,000 trading allowance in a tax year (6 April – 5 April). | No statutory feeRead at source on 2026-09-10 |
| Ordinary partnership registration with HMRConly if it appliesVERIFIED at gov.uk/set-up-business-partnership: no government fee for the partnership or for each partner's Self Assessment registration. | No statutory feeRead at source on 2026-09-10 |
| Comriq professional fee | Fixed fee within 1 business day |
These are the authority’s published lines. Which of them apply depends on your filing — a schedule by headcount, capital or entity type is one line, not all of them — and the applicable line is confirmed before payment, at cost.
How it runs
You will see these exact stages update in your client portal as we progress.
Corporation Tax Set Up
Corporation Tax registration filed with HMRC — due within 3 months of starting to do business — and the accounting period confirmed.
VAT Application
VAT application filed where taxable turnover exceeds £90,000 (or is expected to in the next 30 days), or voluntarily below the threshold.
Numbers Issued
Corporation Tax UTR and any VAT registration number delivered, with MTD-compatible filing set up.
Ready to start?
This one is priced to your situation — most of what we do needs a local filing agent, so we scope it rather than guess. Tell us the specifics and we come back with a fixed quote and a confirmed timeline, within one business day.
Not sure this is the right service? A paid expert call is credited against your order.
Verified September 2026
Requirements and statutory fees are set by HM Revenue & Customs (HMRC) — Corporation Tax and VAT and change without notice. This page is general information, not legal or tax advice. Your engagement letter and quote are the binding documents.