The toolkit
All calculators, in one place.
Every free, private tool for contractors and freelancers — UK IR35 and US self-employment tax, gig-worker calculators, and state-by-state 1099 estimates. Everything runs in your browser, with no sign-up.
UK contractor tools
US self-employed tools
Gig worker tools
Guides
UK
Outside IR35 meaning
What an outside-IR35 contract means for your pay
Open UKWhat does inside IR35 mean
The pay impact of being caught by IR35
Open UKCEST tool alternative
A clearer IR35 status checker than HMRC CEST
Open USHow much to set aside (1099)
Work out your tax-savings percentage
Open1099 calculator by state
Federal tax is the same everywhere; these add your state income tax.
California Graduated 1%–13.3% New York Graduated 3.9%–10.9% (+NYC) Texas No state income tax Florida No state income tax Washington No state income tax Illinois Flat 4.95% Pennsylvania Flat 3.07% North Carolina Flat 3.99% Georgia Flat 5.19% Arizona Flat 2.5% (lowest) Michigan Flat 4.25% Colorado Flat 4.4%