US, UK, Canada and Australia income tax estimate.
A tax calculator estimates the tax on an amount based on a tax rate you provide. It can work out the tax portion of a price, the total including tax, or the pre-tax amount when you know the total. This is useful for quick estimates — adding sales tax to a purchase, working out the tax included in a total, or budgeting for tax on income at a given rate. It handles the arithmetic so you get a fast, accurate figure.
Tax rules vary enormously by country, region, and situation, and real tax owed depends on many factors a simple calculator can't capture — brackets, deductions, exemptions, and local rules. This tool is designed for straightforward percentage-based tax estimates, not for preparing or filing taxes. The ConvertDox Tax Calculator computes results instantly in your browser. For your actual tax obligations, the figures from your tax authority and a qualified tax professional are what matter.
Work out the final price of a purchase once sales tax at a given rate is added.
Determine how much tax is included in a total price when you know the rate.
Calculate tax-inclusive prices when setting prices for a product or service.
Estimate the tax portion of income or a transaction to plan your budget.
Work out the tax line on an invoice before issuing it.
Get a fast tax figure for everyday situations without doing the math by hand.
Yes, completely free with no signup and no usage limits.
No. This tool calculates flat percentage-based tax. Income tax with tiered brackets, deductions, and exemptions is more complex and varies by jurisdiction — consult official resources or a tax professional for that.
Divide the total by 1 plus the tax rate as a decimal to get the pre-tax amount, then subtract that from the total. The calculator does this automatically when you choose that mode.
No. This is an estimation tool for general use only. It is not tax advice. For your actual tax obligations, consult your tax authority or a qualified tax professional.
No. All calculations happen in your browser. Nothing you enter is uploaded or saved.
Use the rate that applies to your location and situation — for example, your local sales tax or VAT rate. Tax rates vary widely, so check the correct figure for your case.