For UK limited company directors
HMRC closed free Corporation Tax filing. Here's what to do now.
From 1 April 2026, every company must file its Corporation Tax return (CT600) through commercial software — or pay an accountant £500+. DueHouse files it for £149/yr.
No card required. Everything below is launching soon — see what's coming at launch.
What actually changed
This isn't marketing spin — here's exactly what HMRC changed, straight from gov.uk.
What closed
HMRC's free "File your accounts and Company Tax Return" service closed on 31 March 2026. It used to let small companies file their Corporation Tax return (CT600) and accounts together, for free, directly with HMRC.
Who's affected
Any UK limited company that files its own Corporation Tax return without commercial software. Most micro and small companies used the free HMRC tool — if that includes you, you now need a different route.
Your options now
Pay an accountant (typically £500–1,500+/yr), use a filing-only tool (from around £59/yr, filing only — no tracking or explanations), or use DueHouse: deadline tracking today, CT600 filing launching soon from £149/yr.
What's still free: Companies House accounts and confirmation statements (via WebFiling), and Self Assessment (via HMRC's free online service). Only the Corporation Tax return (CT600) lost its free HMRC filing route.
Source: gov.uk — closure of the service to file your company accounts and tax return
What DueHouse does
Built for directors who don't want to become accountants — just to know what's due, and never miss it. Labelled honestly below.
Deadline radar
At launchEvery HMRC and Companies House deadline for your specific company, tracked automatically once you tell us your company number.
Plain-English explainers
At launchNo jargon — just what's due, why it matters, and what happens if you miss it.
Email reminders
At launchSent with enough runway before each deadline to actually act on them, not the week after.
Corporation Tax estimate
Coming laterA ballpark of what you'll owe, worked out well before your CT600 is due.
CT600 & accounts filing
Coming laterFile your Corporation Tax return and annual accounts directly with HMRC and Companies House through DueHouse.
Get your free compliance health check when we launch
Tell us your email (and company number, if you have it handy) and we'll send you a free rundown of exactly what's due for your company, the moment DueHouse launches.
Questions, answered honestly
Can I still file for free?
It depends which filing. Companies House accounts and confirmation statements: yes, still free via WebFiling. Self Assessment: yes, still free via HMRC's online service. Your Corporation Tax return (CT600): no — HMRC closed its free filing service on 31 March 2026. From 1 April 2026 you need commercial software, an accountant, or a paper return with a "reasonable excuse". See gov.uk for the source.
When does DueHouse launch?
We're building now. Deadline tracking and reminders launch first; CT600 and accounts filing follow shortly after. Join the list and we'll email you the date.
What will DueHouse cost?
Around £15/month or £149/year once launched. For comparison, accountants typically charge £500–1,500+/yr for year-end filing, and filing-only tools start around £59/yr (filing only — no tracking or explanations). Founding reservers lock in £99 for year one.
Is my data safe?
We only store your email, and your company number or year-end if you give them to us. They're used solely to email you about launch, your health check, and (if you reserve) your founding price. We never sell or share your data with third parties for marketing. Full details are in our privacy policy.
What if I already have an accountant?
DueHouse isn't a replacement for advice — think of it as a safety net that catches anything that slips through the cracks between meetings, and a plain-English translator for what each deadline actually means.
Do I need to do anything today?
No. Reserving your spot doesn't cost anything and doesn't commit you to anything. You'll still need to handle your current obligations as normal until DueHouse launches.