Capital Gains Estimator

About the Capital Gains Estimator

When you sell shares, crypto or property for more than you paid, the profit may be liable for capital gains tax. Estimating it in advance helps you plan a sale, set aside the right amount, and avoid a surprise bill later.

This Capital Gains Estimator works out the tax on your gain at your chosen rate, from the purchase and sale prices, so you can see your likely liability before you sell.

How to use the Capital Gains Estimator

1. Enter the purchase price (cost) of the asset.
2. Enter the sale price or current value.
3. Add your applicable capital gains tax rate.
4. See the gain and the estimated tax due.

Key features of the Capital Gains Estimator

• Estimates capital gains tax on your profit
• Works for shares, crypto and property
• Uses your chosen tax rate
• Shows the gain and the tax clearly
• Runs privately in your browser

How the Capital Gains Estimator works

This calculator uses the established mathematical formulas that banks, lenders and financial institutions rely on — for interest, amortization, EMI, compounding, tax and investment growth. Where local rules apply (such as tax bands or GST/VAT rates), the tool follows the relevant published structure, and figures can be expressed in the currency you work in.

Every calculation runs in your browser, so the financial figures you enter stay completely private.

Tips & best practices

• Many countries offer a tax-free allowance before capital gains tax applies, so subtract any allowance before estimating.
• How long you held the asset can change the rate in some countries, so use the rate that applies to your situation.
• Keep records of your purchase price and costs, as they reduce the taxable gain.

Standards & accuracy

Uses the same standard financial formulas as banks and lenders, with support for multiple currencies and international tax rules.

Disclaimer: results are estimates for general information only and are not financial advice. Rates, fees and tax rules change and vary by provider and jurisdiction. Confirm figures with your bank, lender or a qualified financial professional before making decisions.

Who uses the Capital Gains Estimator?

• Estimating tax before selling an investment
• Planning the timing of a sale
• Setting aside money for a tax bill
• Comparing the after-tax result of selling

Privacy & security

The Capital Gains Estimator runs entirely inside your web browser. Your data — whether that is a file, figures or text — is processed on your own device and is never uploaded to a server, stored or shared. There is no signup and no account, so you can use it as often as you like while keeping full control of your information. This makes it a safe choice even for confidential and sensitive work.

Why choose Toolinza?

• 100% free — no hidden charges, watermarks or usage caps.
• Private & secure — your data stays on your device.
• Standards-compliant — accurate results suitable for the UK, USA, Canada, Australia, EU, India, Pakistan, the Middle East and worldwide.
• Works everywhere — desktop, tablet and mobile.

Frequently asked questions