Free tools for dormant & non-trading companies
Calculators and checkers built for dormant and non-trading company directors. No signup, no email required — just the answer you need.
Free company audit
Search your company and we’ll read its Companies House record — and its actual filed accounts — to flag overdue filings, penalty exposure, strike-off risk, and whether you’re filing the wrong thing.
Late filing penalty calculator
Already overdue? Enter your days late and we’ll show the exact penalty band you fall into.
Open toolDormant company deadline calculator
Find your next filing deadlines and download them as a calendar feed.
Open toolAm I dormant? checker
Answer 8 questions to find out if your company is dormant for HMRC, Companies House, both, or neither.
Open toolCompanies House public-record audit
Enter a company number and get a free health report — overdue filings, strike-off risk, and more.
Open toolCompany hijack check
Enter a company number and see every register change in the last 90 days — and whether any of them look like a hijack.
Open toolDirector ID verification checker
Enter a company number and see who has verified their identity with Companies House, who hasn't, and by when.
Open toolDo I need to file a Company Tax Return? (CT600 checker)
Not sure if HMRC wants a tax return from your company? Answer 7 questions and we'll tell you exactly which Company Tax Return (CT600) you need.
Open toolCan I file micro-entity accounts? (FRS 105 checker)
Enter three figures and we'll tell you if your company is a micro-entity, a small company, or neither.
Open toolWhat is this letter?
Got a letter you don't understand? Photograph it and we'll tell you what it is — and what we can do about it.
Open toolWhy we built these
Most dormant company owners only think about their company once a year — and usually only when they receive a reminder or a penalty notice. These free tools answer the questions we hear most often, without forcing you to sign up for anything.
When you’re ready to file, DormantFile files your dormant or micro-entity accounts and the nil tax return, and keeps watch over the deadlines in between, from £19 a year.
Not ready to file anything yet? The free deadline watchdog emails you before your Companies House deadlines, and alerts you to strike-off action and to changes you did not make to its directors, address, owners or name — no card needed.