Free tools · No sign-up · Updated for 2026
Tax calculators built for contractors & freelancers.
Clear, accurate, and fast. Work out your UK IR35 status and take-home, or your US self-employment tax and quarterly payments — without the spreadsheet.
IR35 Calculator & Status Checker
See whether your contract is likely inside or outside IR35, and compare your take-home pay both ways for the 2026/27 tax year.
- Inside vs outside take-home
- HMRC 3-test status check
- 2026 small-company rules
Self-Employment (1099) Tax Calculator
Estimate the self-employment tax you owe on 1099 income for 2026, including the 92.35% adjustment, Social Security cap and your quarterly payments.
- 15.3% SE tax breakdown
- Quarterly estimates
- ½ SE-tax deduction
Gig workers
Driving for an app? Start here.
Your mileage deduction usually slashes what you owe. These calculators do the math for DoorDash and Uber drivers in seconds.
Why these tools
Accurate figures, plain-English answers.
Current tax rules
US 2026 self-employment figures and UK 2026/27 IR35 rules, including the April 2026 small-company threshold change.
Shows the working
Every result breaks down the calculation so you can see exactly where the numbers come from — and check them.
Private & instant
Calculations run in your browser. Nothing you type is sent to a server or stored.
These calculators provide estimates for guidance only and are not financial, tax or legal advice. See our disclaimer.