Head-to-head · Corporate Tax Software
ONESOURCE Income Tax vs Complete Tax Solutions
ONESOURCE Income Tax leads on 0 checks, Complete Tax Solutions 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 scoreONESOURCE Income Tax · 9.3/10
- Most featuresComplete Tax Solutions · 5 of 5
ONESOURCE Income Tax scores higher on our rubric for corporate tax software: 9.3 against 9.0 out of 10; our editors rank them #2 and #5.
On deployment, Complete Tax Solutions gives you Hybrid where ONESOURCE Income Tax offers Cloud.
ONESOURCE Income Tax is the better fit for large enterprises needing global compliance. Complete Tax Solutions is the better fit for australian groups needing tax provision.
- ONESOURCE Income Tax fits best
Large enterprises needing global compliance
- Complete Tax Solutions fits best
Australian groups needing tax provision
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Side by side
| Feature | ONESOURCE Income Tax 9.3/10 Visit ↗ | Complete Tax Solutions 9.0/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 9.3 | 9.0 |
| Ranking | #2 in Corporate Tax Software | #5 in Corporate Tax Software |
| Best for | Large enterprises needing global compliance | Australian groups needing tax provision |
| 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, Desktop |
| Platforms | Web | Web |
| Support | Phone, Docs · 24/7 | Email, Phone, Docs |
| Integrations | 6 integrations | 2 integrations |
| Built for | Mid-market, Enterprise | Small business, Mid-market, Enterprise |
| Features ONESOURCE Income Tax 3/5 · Complete Tax Solutions 5/5 | ||
| Electronic filing | ✓ | ✓ |
| Consolidated returns | Not checked yet | ✓ (best) |
| Tax provision support | ✓ | ✓ |
| Accounting integrations | ✓ | ✓ |
| Approval workflows | Not checked yet | ✓ (best) |
| Specs | ||
| Jurisdictions covered | Not checked yet | Not checked yet |
| Deployment | Cloud | Hybrid |
| Our review | ||
| Pros |
|
|
| Cons |
|
|
| Our verdict | 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 → |
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 → |
Strengths and trade-offs
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
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
- ONESOURCE Income Tax9.3/10 · Pricing on request
A broad corporate tax system for complex federal, state, local, and international compliance.
Visit siteFull verdict → - Complete Tax Solutions9.0/10 · Pricing on request
A broad Australian tax compliance suite with strong provision and group-reporting coverage.
Contact CTSFull verdict →
More comparisons
- Tax Series vs ONESOURCE Income Tax
- Tax Series vs Complete Tax Solutions
- ONESOURCE Income Tax vs GoSystem Tax RS
- ONESOURCE Income Tax vs Alphatax
- ONESOURCE Income Tax vs CSC Corptax
- ONESOURCE Income Tax vs ONESOURCE Tax Provision
- ONESOURCE Income Tax vs IRIS Business Tax
- GoSystem Tax RS vs Complete Tax Solutions
All corporate tax software comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
Last updated · How we research and update