Every client’s filing deadlines, pulled from Companies House every day.
Paste your client list once. Reminders arrive 30, 7 and 1 days before each one.
See your own clients’ dates first. No account needed.
Public Companies House data only. Your list stays in this browser until you save it.
Paste a list instead
Already have an account? Sign in. Your list comes with you.
The sheet was right in April
A spreadsheet cannot tell you it has gone stale. You find out in an envelope: £150, addressed to your client, for accounts you were sure were on the list.
Three steps, then it runs on its own
-
01
Paste the company numbers
One per line, or a CSV out of your practice software.
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02
The dates fill themselves in
The first 40 clients while you wait. A longer list finishes overnight.
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03
Email arrives before anything is late
30 days out, 7 days out, and the day before.
Four dates, and where each one comes from
| Annual accounts | Companies House |
|---|---|
| Confirmation statement | Companies House |
| Corporation tax payment | Period end + 9 months + 1 day |
| Company tax return (CT600) | Period end + 12 months |
Re-read from the register daily. VAT, PAYE and self assessment are not in the product today.
The part that matters
It tells you when it does not know
If a sync fails, the row keeps the date it has and is flagged with what went wrong. You can always tell a date confirmed this morning from one DueFirm is no longer sure about.
Why the dates matter
Companies House charges automatically from the day after the accounts deadline. No warning letter, no discretion.
| How late | Private company |
|---|---|
| Up to 1 month | £150 |
| 1 to 3 months | £375 |
| 3 to 6 months | £750 |
| Over 6 months | £1,500 |
Every band doubles if the company also filed late the previous year. Source: GOV.UK late filing penalties.
Free while in early access
No tiers, no per-client charge, no card. It will not be free forever, and you will be told before anything changes.
Questions
Do I need my clients’ login details?
No. DueFirm reads the Companies House public register, and it is not registered as your agent with HMRC.
How long does setup take?
A few minutes. The first 40 clients are looked up while you watch, and the rest finish overnight.
Can I enter a date myself?
Yes. Any client can be switched to manual dates, which stops the daily sync overwriting what you entered.
Who gets the reminder emails?
One notification address per practice, set in Settings. Point it at a shared inbox if more than one person needs to see them.