File your CT600 in minutes, not hours. Powered by AI. From £39/year.
No credit card required. Free tier includes full CT600 preparation.
From trial balance import to HMRC submission — one platform, powered by AI.
Describe your business in plain English. AI prepares your CT600, iXBRL accounts, and tax computation.
Import your trial balance from Sage, Xero, QuickBooks, or CSV. Auto-classify accounts.
Submit directly to HMRC with one click. Real-time status tracking and acknowledgement.
FRS 105 and FRS 102 Section 1A statutory accounts with iXBRL tagging.
Every tax rule is transparent and auditable. AGPL-3.0 licensed.
White-label API for accounting firms. Embed CT600 filing in your own software.
Start free. Upgrade when you need HMRC filing.
Community Free | Standard £39/year | Professional £99/year | Enterprise Custom | |
|---|---|---|---|---|
| CT600 Preparation | ✓ | ✓ | ✓ | ✓ |
| HMRC Filing | ✗ | ✓ | ✓ | ✓ |
| Companies | 1 | 1 | 5 | Unlimited |
| AI Tax Assistant | Limited | Full | Full | Full |
| Sage/Xero Import | ✓ | ✓ | ✓ | ✓ |
| API Access | ✗ | ✗ | ✗ | ✓ |
| White-Label | ✗ | ✗ | ✗ | ✓ |
| Support | Community | Priority | Dedicated | |
| Start Free | Get Started | Get Started | Contact Us |
Built on open source. Powered by AI. Designed for accountants.
Three steps from trial balance to HMRC submission.
Upload from Sage, Xero, QuickBooks, or enter manually. AI auto-classifies your accounts.
AI calculates your Corporation Tax automatically. Capital allowances, losses, marginal relief — all handled.
Submit directly to HMRC with one click. CT600, iXBRL accounts, and tax computation — all generated automatically.
Trusted by accountants, directors, and practice owners across the UK.
“I file CT600s for 5 clients in half the time. The Sage import is seamless. What used to take me an entire afternoon now takes 30 minutes.”
“Filed my own Corporation Tax return in 20 minutes via the AI chat. Saved £500 on accountant fees. The explanations made me actually understand my tax.”
“The multi-company dashboard changed how I manage my practice. I can see filing deadlines, tax positions, and document status for all clients at a glance.”
1,500+
Returns Filed
£2M+
Tax Computed
99.5%
Uptime
4.8/5
Rating