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Financial Planning

Capital Gains Estimation Calculator

Estimate the capital gain and tax when selling an asset, using short- and long-term rates and an allowance that you set for your jurisdiction.

Your inputs

Enter the rate that applies in your jurisdiction.

Results

Estimated tax

$720.00

Capital gain (loss)
$4,800.00
Taxable gain
$4,800.00
Gain after tax
$4,080.00

≈Estimate based on the stated model and assumptions

Inputs are never added to links for financial, salary or health calculators.

What this calculator does

Capital gains tax applies to the profit when you sell an investment or property for more than its cost basis. Rates and allowances differ greatly between countries, so you enter them.

Formula and method

Gain = sale price − purchase price − costs and improvements Taxable gain = max(0, gain − allowance); Tax = taxable gain × applicable rate

Worked example

Calculated by this tool with its default inputs:

Inputs

  • Purchase price: 10000 (any currency)
  • Sale price: 15000 (any currency)
  • Buying/selling costs and improvements: 200 (any currency)
  • Holding period: Long-term
  • Your short-term tax rate: 24 %
  • Your long-term tax rate: 15 %
  • Tax-free allowance / exemption: 0 (any currency)

Results

  • Estimated tax: 720
  • Capital gain (loss): 4,800
  • Taxable gain: 4,800
  • Gain after tax: 4,080

How to read the results

The gain after tax is what you keep. Holding periods often change the rate significantly.

Assumptions and limitations

  • This is a single-rate estimate; many systems apply progressive rates, surcharges, inflation indexing or special property rules.
  • Not tax advice — confirm with official guidance or a professional.

Financial results are estimates based on the inputs and assumptions shown. They are not financial advice; confirm figures with your lender, provider or a qualified adviser before making decisions.

Questions

What counts as cost basis?

Usually the purchase price plus buying costs and qualifying improvements; local rules define exactly what is allowed.

Methodology and verification

Result type
Estimate based on the stated model and assumptions
Formula version
1.0
Automated verification
4 reference and validation test cases, checked against independently computed values. The site cannot be built if any of them fail.
Editorial review
Awaiting human editorial review. The explanation was drafted with AI assistance; the formula and examples are verified by the automated tests above.

Privacy

Everything you enter is calculated in this browser and is not sent to Numerith or anyone else. Because this calculator can involve personal financial or health details, your inputs are never added to share links or saved to history. Privacy policy