TaxTools AI
verifiedFreetaxtools.ai
Free US federal and state paycheck and income-tax calculators updated for the 2025 tax year, with more states in development.
What it does
TaxTools AI is a free suite of US tax calculators covering federal income tax and select state taxes. It currently offers calculators for California, New York, Texas, Florida, and Illinois, along with a general federal tax calculator, and updates its brackets annually.
Core features
Federal income tax calculator based on IRS brackets
State-specific calculators for CA, NY, TX, FL, and IL
No-state-income-tax paycheck calculations for TX and FL
Support for all major filing statuses
Annual updates to reflect current-year IRS and state changes
Additional calculators (paycheck, deductions, quarterly estimates) listed as coming soon
Best for
→Estimating federal tax liability by income and filing status
→Comparing take-home pay across supported states
→Planning around 2025 IRS bracket and deduction changes
→Freelancers estimating tax obligations before full quarterly tools launch