Comparison
How Tax Calculator World compares to TurboTax, SmartAsset & the IRS
A free, private, browser-based tax estimator covering 23 countries plus US-specific specialty tools that the big-name calculators don't bundle. Here's where we fit in the ecosystem — and where we don't.
| Feature | Tax Calculator World | TurboTax / H&R Block | SmartAsset / NerdWallet | IRS.gov | Sprintax |
|---|---|---|---|---|---|
| Free to use | |||||
| No signup required | |||||
| Fully client-side (no data sent) | |||||
| Files & e-files your return | |||||
| US federal + state income calculator | |||||
| 23-country global income calculator | |||||
| Visa tax (H-1B, F-1, J-1, 1040-NR) | |||||
| Substantial Presence Test | |||||
| Business entity comparison (LLC/S/C) | |||||
| QBI / Section 199A deduction | |||||
| State-to-state comparison | |||||
| 50-state refund estimator | |||||
| FEIE / Foreign Tax Credit | |||||
| Currency conversion built-in |
full support · partial · not offered
vs. TurboTax, H&R Block, TaxSlayer
They are full filing services — guided returns, e-file, audit support, $50–$200+. We're free estimation only. Use us to plan before you file with them.
vs. SmartAsset & NerdWallet
Strong on US paycheck calculators, but heavy ad load and lead-gen into advisors and loans. We have broader scope: 23 countries for income, plus US-specific tools they mostly lack — visa tax, substantial presence test, business entity comparison, state-to-state comparison, QBI, FEIE.
vs. IRS.gov
The authoritative source, but mostly raw publications and a clunky withholding estimator. We deliver interactive, instant breakdowns across federal + state + social + credits in one view.
vs. Sprintax
Sprintax is the only major paid tool for nonresident 1040-NR filers. We're a free visa-tax estimator — complementary, not competing. (We recommend Sprintax when filing is the next step.)
Where we don't compete
- No actual filing or e-file capability.
- 2026 tax-year data — refreshed annually, not in real time.
- Single filer is the default in some modules; AMT is not modeled.
- No saved scenarios or login (a deliberate privacy choice).