Taxes done. Stress gone.
Bart is your AI-powered tax assistant. It sorts your transactions, tracks your deadlines, and files to HMRC for you.
Bart suggests. You decide.
For every transaction, Bart's AI agent suggests a category based on your business and HMRC rules. Approve it in one tap, or change it — you're always in control.
- Four simple categories: Income, Allowable expense, Disallowable expense, or Not Applicable
- Not sure? Just tell Bart what you bought and why — it'll figure out the rest
File to HMRC in one tap
See a clear breakdown of your income and expenses before submitting. Review everything, then send your quarterly update directly to HMRC.
- Full category breakdown
- Review before confirming
- Submit directly to HMRC
Taxes done. Stress gone.
Once submitted, Bart confirms your filing was received by HMRC. You're done until next quarter — Bart tracks the next deadline for you.
- Instant HMRC confirmation
- Submission receipt saved
- Next deadline tracked automatically
Your taxes, taken care of
Bart handles the complicated stuff so you can focus on your business.
Transactions import automatically
Connect your bank and Bart imports your transactions every day. No spreadsheets, no manual entry.
Deadlines? Handled
Bart tracks your quarterly deadlines and nudges you when it's time to file. Never miss one again.
Secure by design
Bank-grade encryption. Open Banking regulated. Your login details are never stored with us.
Three steps. That's it.
From setup to filing in minutes, not hours.
Connect your accounts — just once
Link your Government Gateway and bank account. Bart imports your transactions automatically from then on — no need to reconnect.
Categorise with Bart
Bart's AI agent looks at each transaction and suggests one of four categories. It uses your business context and HMRC's own guidance to make that call. Approve the suggestion or change it — it takes seconds. If you're unsure, just chat with Bart: tell it what you bought and what it was for, and it'll sort the rest.
File to HMRC
When you're ready, review and send your quarterly update to HMRC with one tap. Final Declaration support is coming soon, so you'll be able to handle your full MTD obligations without leaving Bart.
Is Bart right for you?
Bart is built for UK sole traders using Making Tax Digital. A quick check tells you if you're a good fit.
Quick eligibility check
Answer a few questions to confirm Bart can handle your Self Assessment. Takes less than a minute.
Already know you're eligible?
Try it freeSimple, transparent pricing
That's just £119.88 a year
- Unlimited transactions
- AI categorisation
- Quarterly filing to HMRC
- Final Declaration — coming soon
- Chat with Bart anytime
- Automatic bank import
- Deadline reminders
- Supports iOS and Android
Start for free — your first 5 transactions are on us. If your quarter has 5 or fewer transactions in total, you can file to HMRC for free too. Billing starts at £9.99/month when you need to categorise your 6th transaction. Your free allowance carries across quarters — it doesn't reset.
Ready to stop stressing about your taxes?
Join the millions of UK sole traders who let Bart handle their Self Assessment.
Try it free