Self Assessment Tax Return Software
TaxStats AI makes filing your Self Assessment tax return simple. Our AI analyses your documents, fills in your SA100 return, calculates your tax liability, and helps you claim every relief you're entitled to.
Built for sole traders, landlords, and partnerships across the UK.
AI Analyses Your Documents and Fills Your Return
Upload your P60, P11D, bank statements, and receipts. TaxStats AI reads and extracts the data, categorises your income and expenses, and populates your SA100 return automatically. It handles employment income, self-employment profits, rental income, dividends, capital gains, and foreign income — all in one place.
Never Miss a Deadline Again
The Self Assessment deadline is 31 January for online returns (31 October for paper). TaxStats AI tracks your deadlines, sends reminders, and makes it easy to file well ahead of time. For the 2025/26 tax year, returns must be filed by 31 January 2027. Start early and avoid the last-minute rush.
Claim Every Relief You're Entitled To
TaxStats AI knows UK tax law inside out. It automatically identifies and applies reliefs including the personal allowance, marriage allowance, trading allowance, property allowance, pension tax relief, EIS/SEIS relief, and charitable donations relief. Don't leave money on the table.
Perfect for Sole Traders and Landlords
Whether you're a sole trader calculating your trading profits, a landlord with multiple rental properties, or someone with complex affairs including foreign income and capital gains, TaxStats AI handles it all. The AI guides you through each section of the return with plain English explanations.
Sound Familiar?
- ✗ Deadline stress — scrambling to file before 31 January
- ✗ Missing receipts and struggling to find records
- ✗ Complex calculations for rental income, capital gains, and foreign income
- ✗ Not knowing which expenses you can claim
- ✗ Fear of making mistakes and triggering an HMRC enquiry
TaxStats AI solves all of these. Let AI handle the heavy lifting so you can focus on what matters.
“TaxStats AI has completely transformed how we handle tax returns. What used to take hours now takes minutes, and the accuracy is remarkable.”
— Senior Partner, Manchester Accounting PracticeEverything You Need
SA100 Preparation
Complete Self Assessment return preparation with all supplementary pages.
Receipt Scanning
Upload receipts and invoices — AI extracts amounts, dates, and categories.
Tax Calculation
Accurate tax liability calculation including NI, student loan, and payments on account.
Rental Income (SA105)
Handle multiple properties, mortgage interest restrictions, and wear-and-tear allowances.
Capital Gains (SA108)
Calculate CGT on property, shares, and other assets with relief claims.
Deadline Tracking
Automated reminders for filing and payment deadlines so you never get a penalty.
Frequently Asked Questions
When is the Self Assessment deadline?
Online Self Assessment returns are due by 31 January following the end of the tax year, with paper returns due 31 October. The 31 January deadline also covers your balancing payment and first payment on account.
Can TaxStats AI complete my SA100 for me?
Yes — upload your records (bank statements, invoices, P60/P11D, dividend vouchers) and the AI extracts the figures, prepares the computation, and produces a return-ready summary for your review.
What records do I need for Self Assessment?
Income records (invoices, bank statements, P60/P45), expense receipts, pension and Gift Aid contributions, and details of other income such as dividends, interest or property. TaxStats AI reads these documents directly and organises the figures for you.
File Your Self Assessment with AI
Start preparing your 2025/26 tax return today. Free plan available — upgrade when you need more.