Dormant client filings, 49p a company
File dormant or micro-entity accounts and nil tax returns for up to 100 client companies on a single £49/yr Agent plan, with every client’s deadlines, directors’ ID checks and public register watched. A portfolio dashboard, reminders grouped across every client, CSV export, and the ready accounts filed in one batch.
See the portfolio dashboard working · 1m 9s
The economics
One flat annual fee. Accounts and tax return for every company. No per-submission charge.
£49
per year, Agent plan
100
company slots included
49p
per company, per year
Each slot covers the annual accounts to Companies House and the nil tax return to HMRC, plus a watch on the client’s deadlines and public record. Set that against the £80–£300 a year a dormant client typically pays an accountant for the same work.
Built for a portfolio, not a single company
The Agent plan adds tools you need when you have dozens of dormant clients to manage.
Portfolio dashboard
Every company in one view. Filter by needs-attention, recently filed, or issues. Search and sort as the list grows.
One summary email, all companies
When a reminder is due, one summary covers every company's upcoming and overdue deadlines.
CSV export
Download your full company list with statuses, deadlines, and period data for your own records.
File a batch at once
Queue the ready dormant accounts for every client on autopilot in one go. They're filed at our next run, within about half an hour. The CT600 is never filed automatically.
Answer client compliance questions fast
AI compliance assistant — personalised to your company data. When a client asks whether they need to file, what's overdue, or what a penalty means — get a grounded answer from their real company data in seconds. General guidance only, not a substitute for your own professional judgement.
In the product
Your client list, sorted by urgency
The dashboard opens with a summary across every client, then a queue for filing dormant accounts in one go, then the client list with the overdue company at the top. Export the lot as a CSV whenever you need it for your own records.
- 1The portfolio summary: due, overdue, awaiting confirmation, on track, and tax returns to file.
- 2File accounts now — queue dormant accounts for several clients at once. CT600s are never filed automatically.
- 3Export CSV — the full list with statuses, deadlines and period data.
- 4The overdue band sits at the top, so nothing overdue hides in a long list.
The agent dashboard shows a summary across eight client companies, a queue for filing accounts now, and the client list with the overdue company first.
How it works
Set up in minutes. File when each client is due.
- 1
Sign up and upgrade to Agent
Create a free account, then upgrade to the Agent plan (£49/yr). You get up to 100 company slots.
- 2
Add your client companies
Enter each company number. We pull names, incorporation dates, accounting reference dates, and full filing history from Companies House automatically.
- 3
File when it's due
Work through each client at filing time, or queue the ready ones on autopilot in one go. The accounts go to Companies House under each client's authentication code; the nil CT600 goes to HMRC signed with the company's own Government Gateway login.
In the product
Add the whole client list at once
Paste company numbers one per line, or upload a CSV, and we look each one up on Companies House and add it to your account. Add an authentication code after a number and that client goes straight onto autopilot as it's imported.
- 1Paste company numbers, one per line — we look each one up on the register.
- 2Or upload a CSV from your practice software.
- 3Add an auth code after a number to switch autopilot on as you import.
The bulk import screen takes a pasted list of company numbers or a CSV upload and adds every client in one go.
How each filing is authorised
Accounts on the client’s authentication code
Each client’s Companies House authentication code authorises its accounts. Save it once and it’s stored encrypted, so autopilot and batch filing can use it. Remove it at any time.
The Gateway password is never stored
Each CT600 is signed with the company’s own Government Gateway login. The password is used once at submission time, then discarded. Never written to disk, never logged.
April 2028: software-only filing becomes mandatory
Companies House has confirmed that all company accounts filed on or after 1 April 2028 must go through commercial software. DormantFile already files this way. If you have dormant clients who still file their own accounts, the 2028 deadline is a natural moment to move them onto a tool that already does.
The Economic Crime and Corporate Transparency Act also requires every individual director, LLP member and person with significant control to verify their identity. DormantFile reads each person’s verification status from the register for every client company, shows who has verified on the company’s Directors tab, and reminds you about anyone who hasn’t verified before their date.
Common questions
Pricing and companies
Filing for clients
Ready to bring your dormant clients on board?
Create your Agent account, subscribe, then add your whole client list at once — no single-company audit to wade through first.
Start filing£49/yr · up to 100 companies · full pricing