Tax Series vs ONESOURCE Income Tax

Tax Series9.4Visit ONESOURCE Income Tax9.3Visit

Higher score Tax Series #1 in Corporate Tax Software 9.4/10 Pricing on request ✓ 0 of 5 features Visit Tax Series

vs

ONESOURCE Income Tax #2 in Corporate Tax Software 9.3/10 Pricing on request ✓ 3 of 5 features Visit site

• Tax Series fits best

  Multinational U.S. corporate tax teams

• ONESOURCE Income Tax fits best

  Large enterprises needing global compliance

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Side by side

Feature	Tax Series 9.4/10 Visit ↗	ONESOURCE Income Tax 9.3/10 Visit ↗
At a glance
Editor score	9.4	9.3
Ranking	#1 in Corporate Tax Software	#2 in Corporate Tax Software
Best for	Multinational U.S. corporate tax teams	Large enterprises needing global compliance
Pricing model	Paid	Paid
Starting price	Pricing on request	Pricing on request
Free plan	Not checked yet	Not checked yet
Free trial	—	—
Deployment	Cloud	Cloud
Platforms	Web	Web
Support	Email, Phone	Phone, Docs · 24/7
Integrations	4 integrations	6 integrations
Built for	Mid-market, Enterprise	Mid-market, Enterprise
Features Tax Series 0/5 · ONESOURCE Income Tax 3/5
Electronic filing	Not checked yet	✓ (best)
Consolidated returns	Not checked yet	Not checked yet
Tax provision support	Not checked yet	✓ (best)
Accounting integrations	Not checked yet	✓ (best)
Approval workflows	Not checked yet	Not checked yet
Specs
Jurisdictions covered	Not checked yet	Not checked yet
Deployment	Not checked yet	Cloud
Our review
Pros	Covers U.S. federal, state, and international compliance Combines provision, BEPS reporting, workflows, and entity management Imports general-ledger and financial-system data through web and API access	Covers federal, state, local, and international corporate returns More than 2,500 forms with electronic filing and status tracking Audit traceability, scenario planning, APIs, and tax-provision integrations
Cons	Designed for medium-sized and large multinational companies Licensing requires a contact-sales process Its broad scope may exceed the needs of smaller domestic tax teams	Pricing requires contacting sales Its broad scope may exceed smaller teams' needs Connected workflows are centered on the ONESOURCE ecosystem
Our verdict	Tax Series is a web-based corporate income tax platform from Tax Technologies, Inc. for medium-sized and large multinational companies. It brings U.S. federal corporate tax compliance, state return preparation, multi-jurisdiction… Read the review →	ONESOURCE Income Tax is corporate tax software for organizations managing federal, state, local, and international income tax compliance. It combines return preparation, tax-form calculations, built-in tax-law content, trial-balance… Read the review →

Strengths and trade-offs

• Tax Series — where it wins

  • Covers U.S. federal, state, and international compliance
  • Combines provision, BEPS reporting, workflows, and entity management
  • Imports general-ledger and financial-system data through web and API access

  Where it doesn't

  • Designed for medium-sized and large multinational companies
  • Licensing requires a contact-sales process
  • Its broad scope may exceed the needs of smaller domestic tax teams

• ONESOURCE Income Tax — where it wins

  • Covers federal, state, local, and international corporate returns
  • More than 2,500 forms with electronic filing and status tracking
  • Audit traceability, scenario planning, APIs, and tax-provision integrations

  Where it doesn't

  • Pricing requires contacting sales
  • Its broad scope may exceed smaller teams' needs
  • Connected workflows are centered on the ONESOURCE ecosystem

• Tax Series9.4/10 · Pricing on request

  A broad compliance and provision platform for multinational U.S. tax teams.

  Visit Tax SeriesFull verdict →
• ONESOURCE Income Tax9.3/10 · Pricing on request

  A broad corporate tax system for complex federal, state, local, and international compliance.

  Visit siteFull verdict →