For dormant & non-trading UK companies
Dormant or micro-entity accounts to Companies House. A nil Tax Return to HMRC. Both filed in minutes — from £19 a year.
For companies that aren't trading. Pick yours to see what we file.
Dormant limited company
Dormant at Companies House and HMRC
Non-trading, with a loan
Such as a Bounce Back Loan
Dormant LLP
Limited liability partnership
Flat management or RTM
Limited by guarantee
Community interest company
CIC — the tax return only
Counted fresh today.
What's due, what it costs, and how DormantFile files both returns for you.
Your options for filing a dormant or non-trading company's returns.
Your accountant
Accounting software
DormantFile
From company number to filed returns — here's the whole process.
Type your company number. We pull your name, incorporation date, and filing history from Companies House automatically.
Email reminders at 90, 30, 14, 7, 3, and 1 day before your accounts and confirmation statement deadlines. We calculate those dates — you just show up. CT600 periods you've entered are reminded too.
Confirm your details and submit. Your accounts go to Companies House and your nil CT600 goes to HMRC — both via official APIs.
Here's what's working behind the scenes.
We surface every unfiled accounts period right back to incorporation — file them in one sitting, no period limit.
Reminders at 90, 30, 14, 7, 3, and 1 day before your accounts and confirmation statement deadlines — with penalty amounts so you know the stakes.
We check your public record daily and email you about any filing you didn’t make — hijackers target dormant companies precisely because nobody is watching.
Learn more →Ask anything about your dormant company — what’s due, what it means, what to do next. Grounded in your real filing data on paid plans.
Learn more →Every period, listed
Filed, outstanding, or filed elsewhere — nothing hides.
Register watch alert
A filing you didn't make shows up here the next morning.
31 March 2026
HMRC shut down CATO — the only free way to file a Corporation Tax return. If you're a director of a dormant or non-trading company, you still need to file every year or face penalties.
What you still need to file
Annual accounts
To Companies House — every year, for every company
Nil CT600 return
To HMRC — every year, if registered for Corporation Tax
DormantFile handles both. From £19/yr.
Start filingEvery plan includes annual accounts and, for companies, the CT600. No add-ons, no hidden fees.
Watchdog
Monitoring only — we never file on this plan.
Basic
You have one dormant or non-trading company on the register.
Multiple
£3.90 per company
Side projects, holding structures, or a few companies on the register.
Agent
49p per company
For accountants and formation agents filing on behalf of clients.
Compare to £100+ for most accounting software. All plans include the same security: your HMRC login is never stored.
Built by Ben
Founder & developer
DormantFile exists because the old tools either shut down or were never built for this job. I'm a UK software engineer, and I built it from scratch — not adapted from accounting software, not a side feature in a bigger product.
Your filings go through the same official HMRC GovTalk and Companies House Software Filing APIs that Xero and FreeAgent use. Same infrastructure, fraction of the price, and nothing you don't need.
The details that matter
Official APIs
Filed via HMRC GovTalk and CH Software Filing — the same APIs the big tools use.
HMRC login never stored
Your HMRC Gateway password is used once at submission, then immediately discarded from memory.
Your data, transparent
We store your company info, email, and filing history. Your HMRC login is never stored, and card details go straight to Stripe.
14-day refund guarantee
Full refund within 14 days if you haven’t yet had a filing accepted. One email and it’s done.
Founder-direct support
Email support with replies within one working day. You talk to the person who built it.
The things we'd want to know before signing up. See all FAQs →
Possibly. If it’s genuinely trading, no — you’ll need a full accountant. But if it’s not trading and just has a transaction or two on its books, like repaying a Bounce Back Loan, it can’t file as dormant and we file FRS 105 micro-entity accounts for it instead.
Yes, to file the CT600 you’ll enter your Government Gateway credentials. They’re used once at submission and immediately discarded — never stored.
Yes. You can file any outstanding period, not just the current one. Catch up on missed years in a single sitting.
You’ll see the rejection reason in your dashboard and can correct and resubmit as often as you need, free — your subscription covers every attempt, not a single filing. Common causes are simple data mismatches that take seconds to fix, and resubmitting is always free until it’s accepted.
That’s fine. Most dormant companies only need annual accounts. You can skip CT600 filing if your company isn’t registered for Corporation Tax.
Yes — dormant LLPs, since August 2026. We file the LLP’s dormant accounts to Companies House, approved by a designated member rather than a director. There’s no Corporation Tax step: an LLP is tax-transparent, so any HMRC return would be the SA800 partnership return, due only if HMRC sends a notice to file — if HMRC has, DormantFile files the nil SA800 once Self Assessment is enabled in Settings, or an accountant can ask HMRC to withdraw the notice. Trading and micro-entity LLP accounts are out of scope.
For the tax return, yes — since August 2026 we file a community interest company’s nil CT600 to HMRC exactly as we would any other company’s, because there’s no CIC-specific box on the return. For the accounts, no — and no other filing software can either. Companies House only accepts CIC accounts alongside a CIC34 community interest report and a £15 fee, by post or through its own online CIC service, so that half stays with you or your accountant.
Yes — the Agent plan covers up to 100 companies and supports filing on behalf of clients. It’s £49 a year, which works out to 49p per company at the full 100.
Plain-English guides, answers, and free tools for dormant and non-trading company directors.
Or jump straight to a topic hub: CT600 for dormant companies · Companies House for dormant companies
From
£19/yr
Under
2 min
Filings
2
Set up your company in minutes. When it's time to file, both returns go directly to Companies House and HMRC. From £19 a year.