Dormant company filing guides

The difference between annual accounts and a confirmation statement, including deadlines, content, and costs for dormant companies.

What a newly incorporated dormant company needs to file in its first year: accounts, CT600, and confirmation statement timelines.

WebFiling is being retired. What the move to software-only filing means for dormant company owners, the timeline, and how to file dormant accounts after.

Not every dormant company needs to file a CT600. This guide explains who needs to file and who doesn't.

Step-by-step guide to filing a nil Corporation Tax return (CT600) with HMRC for a dormant company, including what you need and how to submit.

Step-by-step guide to filing annual dormant accounts with Companies House, including deadlines, requirements, and penalties for late filing.

Where to find proof that your dormant company accounts and CT600 were filed, what information a filing receipt contains, and how to keep records.

Everything UK directors need to know about CT600 returns for dormant companies — when to file, what HMRC expects, how to file a nil return, and catching up.

When your dormant company accounts and CT600 are due, how deadlines are calculated, and what happens in the first year.

Subscribe to DormantFile's calendar feed to see your accounts and CT600 deadlines in Google Calendar, Outlook, or Apple Calendar.

If your dormant company has missed filing deadlines, here is how to get back on track — what to file, what order, and how to stop penalties getting worse.

Late filing penalties from Companies House and HMRC for dormant companies, plus the risk of being struck off the register.

Find your dormant accounts deadline, understand the 9-month and 12-month rules, and see the exact Companies House and HMRC late filing penalty bands for 2026.

When you do and don't need an accountant for a dormant company, plus a cost comparison with self-filing options.

A comparison of what it costs to file for a dormant company: DormantFile, accountants, accounting software, and DIY.

A complete annual compliance checklist for dormant companies: what to file, when, and how to do it for £53/year without paying an accountant.

Identity verification is now mandatory under ECCTA 2023. What dormant company directors and PSCs need to do, by when, and how.

A single bank transfer can break dormant status. What counts as a significant accounting transaction under the Companies Act 2006, and how to stay dormant.

Got an HMRC letter asking you to confirm dormancy or file a CT600? A calm, step-by-step guide for dormant company directors on how to respond.

Reference guide to every HMRC letter a dormant UK company might receive — CT603, CT211, CT204, late-filing penalties — what they mean and how to respond.

The difference between a dormant company and a non-trading company under UK law, and what it means for your filings.

The definition of a dormant company under UK law, common scenarios, and how to check whether your company qualifies.

Pause your limited company instead of closing it — the dividend tax squeeze, prerequisites, and the full HMRC and Companies House process for side-hustlers.

DS01 vs keep company dormant in 2026 — annual costs, ECCTA admin, bank de-risking, restoration costs, and a three-question framework to make the call.

HMRC's free Corporation Tax filing tool (CATO) closed on 31 March 2026. Here's what dormant company directors can do instead.

What mortgage lenders, immigration caseworkers, and credit agencies see when you direct a dormant UK company — and how to keep it from causing problems.

If your company took a Bounce Back Loan and is now dormant, you cannot simply close it. Here is what you need to do while the loan is outstanding.

What the Companies House authentication code is, how to request one, where to find it, what to do if it's lost, and how it works with dormant filings.

How to strike off a dormant company using DS01, what it costs, how long it takes, and reasons you might want to keep the company open.

Practical steps to bring a dormant company back to life: HMRC registration, bank accounts, accounts, VAT, and PAYE.

How to keep a portfolio of dormant companies compliant — dashboard overview, deadline tracking, CSV exports, and agent mode for accountants.

What happens when Companies House strikes off a company: the process, consequences, and how to prevent or reverse it.