A&Y Financials — UK Tax Calculator

Instant UK Self-Employment tax & VAT calculations from your browser. Free tools by A&Y Financials.

UK Tax Calculator & VAT Estimator. Calculate your UK self-employment tax, income tax, and Class 4 National Insurance using official HMRC rates. Optimize your tax planning in seconds. Designed specifically for UK sole traders, self-employed contractors, and business owners, this lightweight utility from A&Y Financial Services lets you calculate your tax liabilities instantly without spreadsheets or complex software. ━━━━━━━━━━━━━━━━━━━━━━━━━━━ WHAT IT DOES ━━━━━━━━━━━━━━━━━━━━━━━━━━━ • Self-Employment Tax Estimator: Instantly calculate your Income Tax and Class 4 National Insurance (NI) using current tax-year rates. • Instant VAT Calculator: Add or remove VAT (Standard 20%, Reduced 5%, Zero 0%) at the click of a button. • Real-time Calculations: Dynamic inputs update your net take-home pay and tax liability as you type. • Offline Capability: Runs entirely local on your browser—perfect for on-the-go billing calculations. ━━━━━━━━━━━━━━━━━━━━━━━━━━━ WHY UK BUSINESSES CHOOSE IT ━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✓ Zero Setup Friction: No registration, no signups, no email required. ✓ 100% Secure & Private: All calculations run client-side on your device. Your data is never collected or sent to any server. ✓ Elite Performance: Ultra-lightweight (~14KB) code footprint that won't slow down your browser. ━━━━━━━━━━━━━━━━━━━━━━━━━━━ ABOUT A&Y FINANCIAL SERVICES ━━━━━━━━━━━━━━━━━━━━━━━━━━━ Built by A&Y Financial Services, a leading UK chartered accountancy firm trusted by 500+ corporate clients, freelancers, and growing businesses. Need advanced calculators for pensions, student loans, or dividend extractions? Click the support link inside the tool to access our complete suite of free tax planning web utilities at ayfinancials.com. ━━━━━━━━━━━━━━━━━━━━━━━━━━━ DISCLAIMER ━━━━━━━━━━━━━━━━━━━━━━━━━━━ This tool provides illustrative estimates only and does not constitute formal tax or legal advice. Rates are calibrated for England, Wales, and Northern Ireland. For verified compliance and year-end planning, please consult a qualified chartered accountant.