Side by side
Fortax vs Sidr Tax
Both stand on tax compliance software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan API
Fortax provides tax calculation, filing support, and API access across several Indian tax types. Its tiered structure ranges from a limited free plan to multi-entity Business and Enterprise options.
Visit Fortax Free plan API
Sidr Tax covers monitoring, registration, and filing, with a free analysis tier and paid automation. Confirm the Plus billing details and whether its API scope matches your tax workflow.
Visit Sidr TaxThe facts
| Fortax | Sidr Tax | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API | API |
| Lowest paid plan | Lite: ₹999 a month | Plus: $60 a month |
| Plans published | 8 | 3 |
| Maker | Fortax | Sidr Tax |
| Website | fortax.in | sidr.io |
| On tax compliance software | #15 of 105 | #19 of 105 |
Fortax: what it does well
- Covers GST, TDS, and ITR workflows
- Starter plan is free
- Offers assisted return filing
- API access is available
- Higher tiers support multiple businesses
What to know first
- Starter limits invoices and daily queries
- Paid plans begin at ₹999 a month
Sidr Tax: what it does well
- Free nexus monitoring across all states
- Automated sales tax return filing
- Registration and deregistration support
- CSV imports and liability analysis
- API access is available
What to know first
- Does not provide sales tax calculation
- Plus billing includes per-filing charges
- Only sales tax is supported
Alternatives to Fortax Alternatives to Sidr Tax The whole list