Software you can run yourself.
Track income, log expenses, and watch your tax position update in real time — then file straight to HMRC. Start free, and pay only when you file.
Four tools, one tidy place.
Everything self-filers and small businesses need to stay on top of UK tax — without an expensive adviser.
MTD for Income Tax
Keep digital records and send your quarterly updates and final return to HMRC — fully ready for Making Tax Digital from April 2026.
Get MTD-ready →Personal tax filing
Do-it-yourself filing with easy-to-use forms covering every situation, submitted straight to HMRC with instant confirmation.
File a return →Non-resident filing
Built for expats and overseas landlords. Handle UK property and income from abroad without an expensive adviser.
Start non-resident →Income & expenses
Record income, log expenses, raise invoices and connect your bank. Watch your estimated tax update as you go.
Track for free →See what you owe, the moment it changes.
Every figure you add updates your estimated tax instantly — so there are no nasty January surprises. Forecast, plan, and put the right amount aside as you earn.
- Real-time estimate as you log income & expenses
- Year-on-year comparison built in
- Connect your bank to auto-import transactions
SA100 to SA109 — filled in for you.
Answer plain-English questions and Basetax maps your answers onto the right HMRC forms automatically. No jargon, no guessing which schedule you need.
- Full SA100–SA109 coverage
- Direct, encrypted submission to HMRC
- Instant confirmation, records kept digitally
Three steps to filed.
From a blank screen to an HMRC confirmation — most people are done in an evening.
Add your figures
Log income and expenses, or connect your bank. Your estimated tax updates live as you go.
Review your return
The right forms — SA100 to SA109 — fill themselves in. Check the figures yourself, or get an accountant to review them.
File to HMRC
Submit directly to HMRC and get instant confirmation. Your records are kept, safe and digital.
Try the software free.
Record your income and see your estimated tax today. Pay only when you're ready to file.