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Head-to-head · Corporate Tax Software

Alphatax vs IRIS Business Tax

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Alphatax #4 in Corporate Tax Software 9.1/10 Pricing on request ✓ 5 of 5 features Visit Alphatax
IRIS Business Tax #8 in Corporate Tax Software 8.7/10 Pricing on request ✓ 3 of 5 features Visit IRIS

Alphatax leads on 0 checks, IRIS Business Tax on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreAlphatax · 9.1/10
  • Most featuresAlphatax · 5 of 5

Alphatax scores higher on our rubric for corporate tax software: 9.1 against 8.7 out of 10; our editors rank them #4 and #8.

Alphatax is the better fit for UK groups needing end-to-end tax workflows. IRIS Business Tax is the better fit for UK practices using IRIS systems.

  • Alphatax fits best

    UK groups needing end-to-end tax workflows

  • IRIS Business Tax fits best

    UK practices using IRIS systems

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Side by side

Feature Alphatax 9.1/10 Visit ↗ IRIS Business Tax 8.7/10 Visit ↗
At a glance
Editor score 9.1 8.7
Ranking #4 in Corporate Tax Software #8 in Corporate Tax Software
Best for UK groups needing end-to-end tax workflows UK practices using IRIS systems
Pricing model Paid Paid
Starting price Pricing on request Pricing on request
Free plan Not checked yet Not checked yet
Free trial — —
Deployment Cloud, Self-hosted Cloud, Self-hosted, Desktop
Support Email, Phone, Tickets Email, Phone, Docs
Integrations 2 integrations 9 integrations
Built for Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Alphatax 5/5 · IRIS Business Tax 3/5
Electronic filing ✓ ✓
Consolidated returns ✓ (best) Not checked yet
Tax provision support ✓ (best) Not checked yet
Accounting integrations ✓ ✓
Approval workflows ✓ ✓
Specs
Jurisdictions covered Not checked yet Not checked yet
Deployment Hybrid Hybrid
Our review
Pros
  • Corporate calculations, compliance, e-filing and XBRL in one workflow
  • ERP imports, divisional and group consolidation support
  • Audit trails, diagnostics and review controls for multi-entity teams
  • Handles corporate, partnership, and sole-trader tax computations
  • Files directly to HMRC with submission-status tracking
  • Imports accounts data and supports iXBRL and group relief workflows
Cons
  • Buyers need a sales-led quote and order form
  • Filing capabilities vary across jurisdictions
  • Its broad scope may exceed the needs of small standalone filers
  • Pricing requires contact with sales
  • Its strongest fit is practices using UK tax workflows
  • Integration depth is centered on IRIS and listed accounting systems
Our verdict

Alphatax is corporate tax compliance software for companies, tax advisers and enterprise tax teams. It brings together corporation tax calculations, compliance reporting, electronic filing and XBRL tagging, with workflows for divisional…

Read the review →

IRIS Business Tax is tax return software for accountancy practices and in-house finance teams. It covers corporate, partnership, and sole-trader tax computations, with direct HMRC filing and submission-status tracking. The product is…

Read the review →
  1. AlphataxCorporate Tax Software 9.1Pricing on request
  2. IRIS Business TaxCorporate Tax Software 8.7Pricing on request

Strengths and trade-offs

  • Alphatax — where it wins

    • Corporate calculations, compliance, e-filing and XBRL in one workflow
    • ERP imports, divisional and group consolidation support
    • Audit trails, diagnostics and review controls for multi-entity teams

    Where it doesn't

    • Buyers need a sales-led quote and order form
    • Filing capabilities vary across jurisdictions
    • Its broad scope may exceed the needs of small standalone filers

  • IRIS Business Tax — where it wins

    • Handles corporate, partnership, and sole-trader tax computations
    • Files directly to HMRC with submission-status tracking
    • Imports accounts data and supports iXBRL and group relief workflows

    Where it doesn't

    • Pricing requires contact with sales
    • Its strongest fit is practices using UK tax workflows
    • Integration depth is centered on IRIS and listed accounting systems
  • Alphatax9.1/10 · Pricing on request

    A broad corporate tax system for UK groups with complex compliance workflows.

    Visit AlphataxFull verdict →
  • IRIS Business Tax8.7/10 · Pricing on request

    A broad UK tax workflow for practices already working in the IRIS ecosystem.

    Visit IRISFull verdict →

More comparisons

All corporate tax software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update