Tax compliance for the
modern UK practice
SmartC automates ITSA MTD submissions, CIS returns, landlord bookkeeping, and sole trader accounting — all in one clean platform with AI document extraction.
No credit card required · Free 7-day trial · Cancel anytime
500+
Accounting firms
50,000+
Returns filed
99.9%
Uptime SLA
£2B+
Tax processed
One platform, every filing need
Whether you file for yourself or manage a practice of hundreds, SmartC is designed for your workflow.
File with confidence
Self-employed? Landlord? SmartC captures your income, runs your calculations, and submits your quarterly ITSA updates directly to HMRC.
- Sole trader bookkeeping
- Landlord property income
- Personal income buckets
- MTD ITSA quarterly updates
Scale your practice
Manage all your clients from a single dashboard with per-client modules, staff permissions, review workflows, and compliance alerts.
- Multi-client portfolio
- Configurable staff access
- Document review queues
- Firm-level reporting
Collaborate faster
Invited by firms, accountants get clean access to assigned clients with structured context and approval workflows — no subscription needed.
- Invited by firms free
- Per-client module access
- Structured approval flows
- Leave anytime self-service
Everything you need, nothing you don't
From AI-powered document ingestion to direct HMRC submission — all in one coherent workflow.
AI Document Hub
Upload invoices, receipts, and statements. AI classifies, extracts, and queues every document for review before posting to your books.
MTD ITSA Filing
Quarterly updates and final declarations submitted directly to HMRC via approved APIs with real-time obligation tracking.
CIS Contractor
Full CIS contractor workflow: schemes, subcontractors, monthly returns, and statements all in one place.
Landlord & Property
Record rental income and expenses by property, sync with HMRC business sources, and see your BISS summary.
Reporting & Exports
Profit & loss statements, filing history, and CSV exports for every module — formatted for accountants.
HMRC OAuth Integration
Connect as individual or agent. Import obligations and income sources automatically. Sandbox testing available.
From onboarding to filed in minutes
Create account
Sign up as individual, firm, or accountant in under 2 minutes. No credit card required.
Set up your profile
Enable the tax modules relevant to you — landlord, sole trader, CIS, or personal income.
Upload & automate
Drop documents — AI reads and posts them. Or enter data manually with guided forms.
File to HMRC
Review your data, calculate your tax, and submit your ITSA update or final declaration.
Loved by accountants across the UK
"SmartC cut our quarterly MTD prep time from a full day to under an hour. The AI inbox alone saves us 3 hours per client per quarter."
Sarah Mitchell
Partner, Mitchell & Co Accountants
"Switching from manual HMRC submissions to SmartC was the best decision we made this year. Our clients notice the difference too."
James Okafor
Director, Okafor Tax Services
"As a sole trader with rental properties, I finally have one place for everything. ITSA filing used to terrify me — not anymore."
Claire Thompson
Freelance Designer & Landlord
Transparent plans, no surprises
Start free, upgrade when you're ready. Accountants invited by firms pay nothing.
Individual Solo
- ITSA MTD filing
- Landlord & sole trader
- AI receipt extraction (50/mo)
- Email support
Firm Starter
- Up to 25 clients
- ITSA & CIS for all clients
- Staff invitations
- Per-client permissions
Firm Growth
- Up to 100 clients
- AI extraction (2k docs/mo)
- Review workflows
- Priority support
See full pricing — including firm Scale plan and accountant access details.
Ready to modernise your compliance workflow?
Join hundreds of UK practices already using SmartC to file faster, with fewer errors.