UK Tax Intelligence Platform
The accounting firm
of the future.
TaxWhizz replaces traditional accounting services with AI-powered precision. Every calculation backed by current legislation. Every report generated in seconds. Every filing submitted directly to HMRC.
CALCULATIONS
1.2M+
ACCURACY
99.97%
TAX SAVED
£42M
FIRMS
2,400+
Traditional accounting is broken.
We fix it.
| Feature | Traditional Firm | TaxWhizz |
|---|---|---|
| Annual cost (small business) | £2,000 – £5,000 | From £9.99/month |
| Tax return turnaround | 2–4 weeks | < 30 seconds |
| Available hours | 9–5, Mon–Fri | 24/7/365 |
| Accuracy rate | ~95% (human error) | 99.97% (AI-verified) |
| HMRC rate updates | Manual, quarterly | Automatic, real-time |
| Document processing | Manual entry | AI-powered OCR |
| Tax planning advice | Extra fee | Included |
| HMRC submission | Manual | Direct API |
| Working papers | Manual Excel | Auto-generated |
| Corporation tax | Extra fee | Included |
| VAT returns | Extra fee | Included |
| Payroll | Extra fee | Included |
Trusted by 2,400+ UK accounting firms and 15,000+ businesses
One platform. Every tax task.
From self-assessment to company accounts. From payroll to audit. Everything a modern practice needs.
Tax Computation Suite
SA100, CT600, CGT, IHT — computed in seconds with full working papers and HMRC-ready outputs.
Document Intelligence
Upload bank statements, invoices, receipts. AI extracts, categorises, and reconciles automatically.
Company Accounts
FRS 102, FRS 105, micro-entity. Full statutory accounts generated from trial balance in minutes.
HMRC Integration
Submit directly via MTD APIs. Self Assessment, VAT, RTI, CT600 — all filed from one platform.
AI Tax Advisor
Ask anything. Get legislation-backed answers instantly with section references and case law.
Audit & Compliance
Working papers, management accounts, compliance checklists. Everything your practice needs.
Workspace Engine
From raw documents to HMRC submission.
One workspace per engagement. Five automated steps. Complete audit trail. The professional workflow that replaces spreadsheets, email chains, and manual filing.
Upload documents. Bank statements, invoices, P60s — AI extracts every figure.
AI categorises income, expenses, reliefs. Cross-references against HMRC rules.
Run SA100, CT600, VAT — deterministic engines, not AI guesses. Full working papers.
Generate tax computations, client reports, management accounts. HMRC-ready outputs.
File directly via MTD APIs. SA100, CT600, VAT, RTI — all from one workspace.
Compliance Lock
Lock individual items or entire workspaces for regulatory compliance. Once locked, data becomes immutable — exactly what HMRC expects.
Full Audit Trail
Every action timestamped and attributed. Document uploads, computation runs, report generation, submissions — complete provenance for every figure.
Practice-Grade Security
AES-256 encryption at rest. TLS 1.3 in transit. Role-based access. SOC 2 aligned. Built for firms managing thousands of client engagements.
Multi-Workspace
One workspace per client engagement. SA 2025/26 for Smith. CT600 for Acme Ltd. VAT Q4 for Jones Trading. Organised, isolated, auditable.
Free tier includes 3 workspaces. No credit card required.
See it in action.
Enter any UK salary. Get an instant, HMRC-accurate computation.
Simple, transparent pricing.
Start free. Scale as you grow. No hidden fees.
Free
For individuals getting started
- Basic income tax calculator
- Self-assessment estimates
- Tax deadline reminders
- Email support
Professional
For self-employed & freelancers
- Everything in Free
- Full SA100 computation
- CGT calculations
- Document OCR upload
- HMRC direct submission
- AI tax advisor
- Working papers
- Priority support
Business
For limited companies & SMEs
- Everything in Professional
- CT600 corporation tax
- Company accounts (FRS 102/105)
- VAT returns & MTD
- Payroll & RTI
- Management accounts
- Multi-entity support
- Dedicated account manager
Enterprise
For accounting firms & practices
- Everything in Business
- Unlimited clients
- White-label reports
- API access
- Audit & compliance suite
- Custom integrations
- SLA guarantee
- Dedicated success team
All plans include a 14-day free trial. No credit card required.
TaxWhizz.ai Ltd is registered in England & Wales. All calculations are verified against current HMRC legislation and updated in real-time. Our platform is aligned with Making Tax Digital requirements.
Free UK Tax Rates 2025/26 Cheat Sheet
Download our comprehensive 2-page PDF with every UK tax rate, band, threshold, and deadline you need. Updated for 2025/26.
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Replace your accountant.
Start free. No credit card required.
14-day free trial · Cancel anytime · HMRC-aligned