Complete Tax Solutions vs IRIS Business Tax

Complete Tax Solutions9.0Visit IBIRIS Business Tax8.7Visit

Higher score Complete Tax Solutions #5 in Corporate Tax Software 9.0/10 Pricing on request ✓ 5 of 5 features Contact CTS

vs

IB IRIS Business Tax #8 in Corporate Tax Software 8.7/10 Pricing on request ✓ 3 of 5 features Visit IRIS

• Complete Tax Solutions fits best

  Australian groups needing tax provision

• IRIS Business Tax fits best

  UK practices using IRIS systems

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Side by side

Feature	Complete Tax Solutions 9.0/10 Visit ↗	IBIRIS Business Tax 8.7/10 Visit ↗
At a glance
Editor score	9.0	8.7
Ranking	#5 in Corporate Tax Software	#8 in Corporate Tax Software
Best for	Australian groups needing tax provision	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, Desktop	Cloud, Self-hosted, Desktop
Platforms	Web	Web
Support	Email, Phone, Docs	Email, Phone, Docs
Integrations	2 integrations	9 integrations
Built for	Small business, Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features Complete Tax Solutions 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	Supports corporate and consolidated tax return preparation Calculates current and deferred tax balances with journals and disclosures Combines Excel workpapers with ATO SBR electronic lodgement	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	Pricing requires contacting the CTS team The portfolio contains multiple products rather than one plan-based application Its e-lodgement workflow is centered on Australia's ATO SBR portal	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	Complete Tax Solutions (CTS) is a suite of tax compliance and reporting products from SW Accountants & Advisors. Its corporate offering is designed for private, large and listed groups, with coverage for corporate and consolidated returns,… 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 →

Strengths and trade-offs

• Complete Tax Solutions — where it wins

  • Supports corporate and consolidated tax return preparation
  • Calculates current and deferred tax balances with journals and disclosures
  • Combines Excel workpapers with ATO SBR electronic lodgement

  Where it doesn't

  • Pricing requires contacting the CTS team
  • The portfolio contains multiple products rather than one plan-based application
  • Its e-lodgement workflow is centered on Australia's ATO SBR portal

• 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

• Complete Tax Solutions9.0/10 · Pricing on request

  A broad Australian tax compliance suite with strong provision and group-reporting coverage.

  Contact CTSFull verdict →
• IBIRIS Business Tax8.7/10 · Pricing on request

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

  Visit IRISFull verdict →