See your tax bill.
Catch mistakes first.
TaxLi checks your return against HMRC's own rules as you go, shows your tax bill updating live, and flags problems before you file — not after HMRC does. Build and review everything for free; pay only when you're ready to download your pack.
Are you an accounting firm? Explore TaxLi Practice →
Draft access
Build and review 100% free
Readiness checks
Catches errors before you file
Return pack
£29 per tax year
Self Assessment SA100
Return Readiness
Completion
83%
Designed for everyone who deals with UK tax
Whether you file for yourself, manage business tax, or run an accounting firm.
Stop guessing what HMRC actually wants.
TaxLi turns HMRC's own rules into plain-English questions, tells you which expenses you can actually claim, and shows your tax bill updating as you go — so there's no second-guessing before you file.
Choose the TaxLi tier built for you
From individual sole traders to multi-client accounting practices.
TaxLi
Simple, guided UK Self Assessment preparation for individuals filing standard returns.
- Guided SA100 income journey
- Live draft tax calculation & estimate
- Automated readiness & error checks
- Downloadable official PDF & XML pack
- Pay only when unlocking final pack
TaxLi Pro
Advanced multi-stream workspace for individuals and SMEs with property, dividends, and capital gains.
- Everything in TaxLi Starter
- UK Property (SA105) & Landlord tools
- Dividends & Capital Gains (SA108)
- Receipt & document storage vault
- Optional Accountant Review upgrade
TaxLi Practice
Multi-client practice control panel to manage and review Self Assessment returns for clients. Submit directly to HMRC under your own agent credentials.
- Centralized multi-client dashboard
- Client invite & document collection
- Staff team roles & permissions
- Direct HMRC agent (ARN) filing
- Dedicated practice support manager
Confidence comes from seeing the whole picture.
Most tax software just gives you boxes to fill in. TaxLi shows you what those boxes mean, what happens if you get one wrong, and what your return looks like before you ever submit it.
Organised Workspace
Nothing hidden behind menus.
You always know exactly what's done, what's missing, and what happens next — no digging through tabs to find out where you stand.
Plain-English Guidance
No dictionary required.
Every question explains what HMRC means by it and why it matters, so you're never guessing whether something applies to you.
Complete Confidence
Checked the way HMRC checks it.
TaxLi runs the same kind of validation before you submit, so the errors and missing details that trigger HMRC queries get caught here first.
The confidence of a prepared return, with the calm of a guided workspace.
TaxLi keeps the complex parts visible and understandable so you always know where you stand.
Guided Self Assessment Journey
Work through personal details, employment, self-employment, property, dividends, and review with a structured, stress-free path.
Real-Time Readiness Diagnostics
See at a glance what is complete, what requires review, and exactly which issue is holding back your return.
Live Tax Estimate Calculation
Understand your precise tax balance and National Insurance contributions in real time as you enter your figures.
Official Return Pack Export
Download a complete SA100-style PDF report and structured XML data package ready for official filing or accountant handoff.
Comprehensive UK Tax Coverage
Built for simple to complex Self Assessment returns
Supported HMRC schedules and income streams covered by TaxLi's calculation engine.
4 simple steps to a complete return pack
Select your return scope
Choose your tax year and select the income streams relevant to you (employment, self-employment, property, dividends).
Follow the guided wizard
Enter your details with live progress autosaving after every step and next actions clearly highlighted.
Run readiness diagnostics
Identify any missing required fields, calculation warnings, or formatting issues before finalizing.
Unlock & export your pack
Review your live tax estimate, pay £29 to unlock, and download your complete official return pack.
Your client list, their deadlines, one dashboard.
Stop chasing client updates across email and spreadsheets. TaxLi Practice tracks every client's return status in one view — and submits directly to HMRC under your own agent credentials.
Clear answers before you begin
Why not just use HMRC's free online service?
You can — TaxLi doesn't replace your right to file directly with HMRC for free. What TaxLi adds is a guided, plain-English workspace that checks your figures as you go, shows your tax bill updating live, and catches missing or inconsistent details before you submit — the parts HMRC's own portal leaves entirely up to you.
Does TaxLi prepare my return for the official 2025–26 tax year?
Yes! TaxLi is fully configured for the 2025–26 and 2026–27 UK tax years using HMRC's official calculation logic and schedule specifications.
What do I receive when I unlock my return pack?
Unlocking provides you with a full, professional TaxLi Self Assessment Information Pack. This includes a complete SA100-style PDF summary, full itemized income breakdown, calculation notes, and formatted XML export for filing or record keeping.
Can I start and review my return before paying?
Absolutely. You can create your account, enter all your income streams, review diagnostic issues, and calculate your draft tax estimate 100% free. Payment is only required when you choose to download your final return pack.
Does TaxLi offer options for accountants and practices?
Yes! TaxLi Practice allows accounting firms to manage multiple client returns from a single unified dashboard, invite clients to upload documents, and streamline practice filing.
Is my data safe with TaxLi?
Your data is stored securely in Google Firebase with encryption at rest and in transit. TaxLi never shares your financial information with third parties, and you can request deletion of your data at any time. All HMRC connections use official OAuth and are governed by HMRC's API access controls.
Know where you stand before you file.
Build and review your tax return for free. See your live estimate update as you go, clear every diagnostic warning, and unlock your downloadable return pack only when you're ready.
£29 per tax year to unlock final pack