Tax Calculators 2026 - Sales Tax, VAT, GST, Income Tax
What makes the tax category useful
This category groups calculators that solve closely related real-world tasks, so you can move from a quick estimate to a more specific planning tool without restarting the process.
Add or remove sales tax, VAT, and GST at the correct regional rate in one step
Calculate income tax with marginal brackets for the US, UK, AU, NZ, and Canada
Estimate contractor and self-employed tax including provisional and quarterly payments
Work out bonus tax, redundancy tax, FBT, and RWT under each country specific rule set
Compare effective and marginal rates so you know your true take-home percentage
Daily pricing and invoicing
Add or strip sales tax, VAT, and GST when quoting customers or recording purchases.
Annual income tax planning
Estimate your tax bill, refund, and after-tax income before lodging a return.
Contractor and side-business tax
Plan for provisional, quarterly, and bonus tax obligations as a sole trader or contractor.
All Tax Calculators
Sales Tax Calculator
Calculate sales tax and total price.
VAT Calculator
Add or remove VAT from any price.
Bogart Calculator (Education Credit Optimizer)
Optimize the American Opportunity Tax Credit using the Bogart scholarship strategy.
S-Corp vs LLC Tax Savings Calculator
Find when S-Corp election saves you money.
Spain VAT Calculator
Spain IVA at 21% with reduced rates.
Italy VAT Calculator
Italy IVA at 22% with reduced rates.
Poland VAT Calculator
Poland VAT at 23% with reduced rates.
Saudi VAT Calculator
Saudi VAT at 15% add or remove.
Massachusetts Income Tax Calculator
MA state income tax with flat 5% rate and millionaire surtax.
Related Articles
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Seattle Sales Tax vs NYC, Chicago, LA, and SF: 2026 Guide
Seattle's sales tax is 10.25% in 2026, tied with Chicago and LA for the highest of any major US city. See how it stacks up against NYC, SF, Houston, and Portland.
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US Tax vs. UAE Tax: Is Dubai Really a 0% Income Tax Paradise?
Compare the US tax system with the UAE's 0% personal income tax regime. Discover the 'hidden' costs for US expats, including IRS reporting and Dubai municipal fees.
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US Tax vs Germany Tax: Income Tax, VAT, Social Security, and Take-Home Pay Compared
Compare US and German tax systems in detail. See how federal income tax vs the German linear-progressive formula, sales tax vs VAT, Social Security vs Sozialversicherung, and take-home pay differ in both countries.
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US Tax vs UK Tax: Income Tax, VAT, National Insurance, and Take-Home Pay Compared
Compare US and UK tax systems in detail. See how federal vs PAYE income tax, state tax vs no equivalent, sales tax vs VAT, FICA vs National Insurance, and take-home pay differ at every income level.
Read articleCategory FAQ
How do I add 10 percent GST to a price?
Multiply the pre-tax price by 1.10. A $100 item with 10 percent GST costs $110. To remove GST from an inclusive price, divide by 11 to find the GST portion.
How do I calculate VAT in the UK?
Standard UK VAT is 20 percent. Add 20 percent to the net price to get the gross, or divide the gross by 1.20 to find the net. The reduced rate of 5 percent applies to items like home energy.
How much income tax will I pay on $80,000?
Tax depends on the country and any deductions. In Australia, $80,000 attracts about $14,788 in income tax for 2025-26. In the US, federal tax for a single filer is roughly $9,800. In the UK, it is around £19,432. Use the regional income tax calculator for an exact figure.
What is the difference between marginal and effective tax rates?
Your marginal rate is the bracket your next dollar falls into. Your effective rate is total tax divided by total income. Effective is always lower than marginal in a progressive tax system.
How is contractor tax different from PAYE?
PAYE is deducted by the employer each pay run. Contractors pay tax themselves through provisional, quarterly, or self-assessment installments and are usually responsible for their own withholding tax (RWT) and ACC levies.
How do I get a bonus tax refund?
Bonus tax is often withheld at a flat rate above your normal bracket. If your annual income lands you in a lower bracket, you usually receive the difference back as a refund when you file your tax return.
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