What this incorporation checklist covers
This is a free, interactive company formation checklist that mirrors the actual online registration flow on gov.uk — broken into the same logical sections you'll encounter when you click through. It covers every detail Companies House asks for: company particulars, director and PSC information, shareholder and share structure, and the Corporation Tax questions HMRC bundles into the same form.
We built this tool because the gov.uk service doesn't tell you what it's about to ask until you're already inside it. Every time you get stuck halfway, you either abandon the session or fill in placeholder answers you'll later have to correct on the public register. Working through this new company setup checklist before you start means you finish the application in one pass.
Why a pre-registration checklist matters
Registering a UK limited company is essentially a one-shot process. You pay £100 when you submit, and the answers you give — SIC code, registered office address, share structure, articles of association — appear on the public Companies House register for anyone to see. Changing them afterwards is possible but each correction is a separate filing, sometimes with its own fee.
A thorough company registration checklist also prevents the most common cause of a stalled application in 2026: missing identity verification. Every director and every person with significant control (PSC) must now hold an 11-character personal code from GOV.UK One Login before they can be appointed. Without it, the registration form will refuse to let you proceed past the director section.
What's in this entity formation checklist
The checklist above is organised into the sections Companies House takes you through, in the order the online service asks for them:
- Before you start — identity verification, a UK registered office address, and a valid payment method
- Company details — name, address, jurisdiction, SIC code, contact email
- Corporation Tax details — principal place of business, trading start date, first-year tax questions
- Director details — full legal names, nationality, date of birth, correspondence and home addresses
- Shareholders and shares — who owns what, share values, share classes
- Decisions to make — articles of association, filing reminders, service address
- Costs — the £100 registration fee plus optional extras like a virtual office
- What happens after — what arrives automatically, what you need to action yourself
Each item includes a short hint explaining what Companies House actually expects, including the typical answer most new companies give.
Common pitfalls when registering a company
A handful of issues catch first-time founders out during the registration:
- Home address on the public register. If you use your home as both the registered office and director's correspondence address, both become permanently searchable on the Companies House register. A virtual office keeps your home address private.
- Unsuitable SIC codes. The SIC code describes what your company does. Picking one you'll outgrow, or a generic "other" code, can cause problems later with banks, insurers, and grant eligibility.
- Share structure for co-founders. Adding a second shareholder just to look bigger has real tax and governance consequences. Only issue shares to people genuinely committed long term.
- Rushing the Corporation Tax questions. The registration form also signs you up for Corporation Tax. The answers you give here determine when your first accounting period starts and whether HMRC expects an early return.
What to do next
Once every item on the checklist is ticked, you're ready to submit the application at gov.uk/limited-company-formation. Still finalising your company name? Our name availability checker runs your proposed name against the Companies House register and flags sensitive words, similar companies, and dissolution risk. If you're still weighing whether to incorporate at all, our guide on sole trader vs limited company compares the two setups on tax, admin, and liability. For the end-to-end picture of what running a limited company involves, the director's journey guide walks through every step from formation to first confirmation statement.