Sales & Capital Gains Tax Calculators
16 tools in this collection — free, instant, and private in your browser.
Tax calculators help individuals and small business owners estimate what they owe — or might save — before filing. Because tax liability depends on income type, jurisdiction, filing status, and timing, these tools are designed around specific scenarios rather than a single universal formula. Using the right one for your situation gives you a much more accurate estimate than a generic tax rate lookup.
Sales tax calculators by U.S. state — including California, Florida, and Missouri — instantly compute the total you will pay at checkout by applying the correct state and, where applicable, local rates. The GST Calculator and GST and QST Calculator cover Canadian federal and Quebec provincial consumption taxes, while the Philippines and Australia Income Tax Calculators handle income-based obligations in those countries. These jurisdiction-specific tools matter because rates and rules vary substantially.
Investment and capital gains tools cover two increasingly common scenarios: the UK Capital Gains Tax Calculator for property and investment disposals, and the Crypto Tax Gain Calculator for digital asset transactions. Because cryptocurrency is typically treated as property for tax purposes in most jurisdictions, each sale, trade, or conversion can be a taxable event — the calculator helps you tally gains and losses before year-end so nothing surprises you at filing time.
Several tools address income that arrives in lump sums. The Lottery Tax Calculator and Mega Millions Payout Calculator both model federal and state withholding on prize winnings, letting you compare the lump-sum option against annuity payments on an after-tax basis. The Mileage Reimbursement Calculator applies the current IRS standard rate to business miles driven, producing a figure you can use directly on an expense report or Schedule C.
The Adjusted Gross Income and Effective Corporate Tax Rate calculators are useful for planning rather than compliance: they help you understand your overall tax exposure relative to gross income before you have finalized any returns. The HRA Exemption Calculator is relevant for employees in India who receive a House Rent Allowance component in their salary package.
All sales & capital gains tax calculators
All calculator tools →Compare these tools
| Tool | What it does |
|---|---|
| Adjusted Gross Income (AGI) Calculator | Estimate your Adjusted Gross Income (AGI) by summing your income sources and subtracting above-the-line deductions allowed by the IRS. |
| Australia Income Tax Calculator | Calculate your Australian income tax liability for the 2024-25 financial year, including the Medicare levy, effective tax rate, and take-home pay. |
| California Sales Tax Calculator | Calculate the sales tax and total price for a purchase in California, using the statewide base rate plus any applicable local district taxes. |
| Crypto Tax Gain Calculator | Estimate the taxable capital gain or loss from a crypto sale based on cost basis, sale proceeds, and holding period. |
| Effective Corporate Tax Rate Calculator | Calculate a corporation's effective tax rate — the actual percentage of pre-tax income paid in income taxes — to measure the true tax burden after all deductions, credits, and incentives, distinct from the statutory marginal rate. |
| Florida Sales Tax Calculator | Calculate Florida sales tax on purchases. The state rate is 6%. Many counties add a discretionary surtax of up to 2.5%. Enter your county surtax rate to get the combined total. |
| GST & QST Calculator | Calculate Canadian Goods and Services Tax (GST) and Quebec Sales Tax (QST) on any purchase amount. Instantly see GST at 5%, QST at 9.975%, combined tax, and total price. |
| GST Calculator | Calculate GST amount and total price inclusive of Goods and Services Tax, or extract the GST component from a GST-inclusive price. |
| HRA Exemption Calculator | Calculate the House Rent Allowance (HRA) exemption under Section 10(13A) of the Indian Income Tax Act. Find the tax-exempt portion of your HRA based on salary, actual HRA, and rent paid. |
| Lottery Tax Calculator | Calculate how much tax you owe on lottery winnings. Estimate your federal withholding, additional federal tax owed at filing, state tax, and final net take-home for any lottery prize amount. |
| Mega Millions Payout Calculator (After Tax) | Estimate your Mega Millions take-home pay after federal and state taxes for both the lump-sum cash option and the 30-year annuity option. |
| Mileage Reimbursement Calculator (IRS Standard Rate) | Calculate your mileage reimbursement using the IRS standard mileage rate. Enter miles driven for business, medical, or charity purposes to find your reimbursement or deduction amount. |
| Missouri Sales Tax Calculator | Calculate Missouri sales tax for any purchase. The Missouri state sales tax rate is 4.225%, plus local taxes that vary by city and county. Enter the purchase price and local rate to find total cost. |
| Philippines Income Tax Calculator | Calculate Philippine personal income tax under the TRAIN Law (Republic Act 10963) effective from 2023 onwards, with effective rate and take-home pay. |
| Sales Tax Calculator | Calculate sales tax and total price. |
| UK Capital Gains Tax Calculator | Estimate the UK Capital Gains Tax owed on the disposal of assets such as shares or property, applying the 2024/25 annual exempt amount and the correct CGT rates. |
Frequently asked questions
- How is the sales tax rate determined in the calculators?
- State sales tax calculators apply the base state rate plus any standard county or city rate for that state. Because local rates vary within states, calculators typically use either a statewide average or a major-city rate for local components. For precise amounts on an actual purchase, verify the combined rate for the specific city or county where the sale takes place, as the difference can be a percentage point or more in some areas.
- Do I owe taxes every time I trade one cryptocurrency for another?
- In most jurisdictions, including the United States, cryptocurrency is treated as property. That means trading one coin for another is a taxable event: you are treated as having sold the first coin at fair market value on the date of the trade, triggering a capital gain or loss. This applies to swaps, conversions, and using crypto to pay for goods or services, not just direct sales to fiat currency. The Crypto Tax Gain Calculator helps you track each transaction's cost basis and proceeds.
- What is the difference between Adjusted Gross Income and taxable income?
- Adjusted Gross Income (AGI) is your total gross income minus specific above-the-line deductions such as student loan interest, retirement contributions, and self-employment taxes. Taxable income is your AGI minus either the standard deduction or your itemized deductions. Your tax bracket is applied to taxable income, but AGI is the threshold used to determine eligibility for many credits and deductions, so knowing your AGI is an important first step in tax planning.