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JoinCalc

Free Financial Calculators 2026

Free, accurate, and up-to-date calculators for tax, property, retirement, and investing. Updated for US, UK, Canada and Australia. No sign-up required.

📚 Money Guides

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New to UK tax? These plain-English guides explain how it works — each with a free calculator inside.

How Is Stamp Duty Calculated in the UK?

6 min read

How Much Capital Gains Tax Will I Pay in the UK?

7 min read

How Is National Insurance Calculated in the UK?

6 min read

How Much Redundancy Pay Am I Entitled To?

6 min read

How to Calculate Your Take-Home Pay in the UK

6 min read

UK VAT Rates Explained

5 min read

How Compound Interest Works

6 min read

UK Student Loan Repayments Explained

6 min read

How Much Can I Borrow for a Mortgage?

6 min read

What Is a FIRE Number?

6 min read

How to Pay Off Credit Card Debt Fast

7 min read

Avalanche vs Snowball: Which Debt Payoff Method Wins?

6 min read

How Much Car Can I Afford?

6 min read

Should I Refinance My Mortgage?

7 min read

Do I Pay Tax on a Bonus in the UK?

4 min read

Do I Pay National Insurance on My Pension?

4 min read

Is Redundancy Pay Taxed If I Get a New Job Straight Away?

4 min read

How Much Can I Earn Before I Pay 40% Tax in the UK?

4 min read

Do I Pay Tax on Dividends From My Own Limited Company?

5 min read

Does a Pay Rise Affect My Student Loan Repayment?

4 min read

About JoinCalc

JoinCalc provides free financial calculators for individuals in the US, UK, Canada, and Australia. All calculators are updated for 2026 tax rates and use official government sources including the IRS, HMRC, ATO, and CRA. No account required — all calculations happen instantly in your browser.

✅Updated for 2026 tax rates
✅US, UK, Canada & Australia
✅No sign-up required
✅All calculations in your browser