UK Tax Calculator for Contractors, Freelancers & Self-Employed

Built by contractors and founders who got tired of spreadsheets. Calculate take-home pay, net income, mortgage affordability, and tax optimization for limited companies, umbrella contractors, and sole traders using current UK tax rates.

Free PAYE calculator, IR35 tools, and income tax estimators. No signup required. Runs in your browser using 2024/25 tax year rates.

4.8/5 from UK contractors & founders

Contractor Waterfall Calculator

Most popular tool

Calculate your actual take-home pay after Corporation Tax, Income Tax, NICs, and dividends

£650
220
Annual Net Take-Home
£93,450
After all taxes (65% retention)

Full calculator includes: IR35 status comparison, optimal salary/dividend split, personal allowance taper, corporation tax, and monthly cash flow breakdown

Estimates only. UK 2024/25 tax year. Not financial advice. Consult an accountant for personalized guidance.

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All Free Calculators

No signup required. All calculators use current UK tax rates and regulations.

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IR35 Status Checker

5 yes/no questions + contract type, outputs inside/outside risk flag

Dividend vs Salary Split

Slide company profit, see personal tax + corp tax waterfall breakdown

Flat-Rate VAT Calculator

Compare flat rate vs standard VAT by sector and turnover

Side-Hustle Tax Checker

Input extra income + salary, see if you need Self Assessment

SEIS/EIS Calculator

Calculate max raise and investor tax relief for advance assurance

"Switched from permanent to contracting and was drowning in spreadsheets. The Waterfall calculator showed me my actual take-home was £18k higher than I thought after optimizing my salary/dividend split. Paid for my accountant's advice and still saved £3k in tax."

— Alex M., DevOps Contractor, London

Frequently Asked Questions

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Company Information

SarvFlow Ltd.
Company No: 16629493
3rd Floor, 86-90 Paul Street
London EC2A 4NE
United Kingdom

Important Legal Disclaimer: All calculators and tools on this website are for illustration and educational purposes only. They do NOT constitute financial, legal, tax, or investment advice. Results are estimates with no guarantee of accuracy. Tax rates and laws change frequently and may not reflect current regulations or your specific circumstances. You are solely responsible for verifying all information and consulting qualified professionals (accountants, tax advisors, financial planners, solicitors) before making any decisions. Use of this website does not create any advisory relationship. We accept zero liability for any consequences of using these tools.

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