Capital Gains Calculator
Calculate capital gain or loss from cost basis, sale value, and selling fees.
- Last reviewed
- July 8, 2026
- Cost
- Free to use
- Data
- Runs in your browser
Net Sale Proceeds
Enter valid inputs
Capital Gain or Loss
Enter valid inputs
Gain on Cost Basis
Enter valid inputs
Methodology
How this calculator handles inputs
This calculator uses the values you enter above and applies the formula explained in the guide below. Results update in the browser and are intended for quick planning, comparison, and sanity-checking.
- Use consistent periods, currencies, and units across inputs.
- Review any assumptions before using the result in a decision.
- Recalculate when rates, prices, tax rules, or business terms change.
Important note
This tool provides general planning information only. It is not tax, legal, financial, accounting, or investment advice. Check the current rules for your location and speak with a qualified professional before making a high-stakes decision.
Guide
How it works
Use this calculator to estimate capital gain or loss before tax.
What this calculator does
The capital gains calculator compares sale proceeds with cost basis after selling fees.
Capital Gains Formula
Capital Gain = Net Sale Proceeds - Cost Basis
Example calculation
If your cost basis is 10,000 and you sell for 14,000 with 100 in fees, the capital gain is 3,900.
When to use this calculator
- estimating taxable gains before applying tax rates
- comparing sale scenarios
- checking cost basis
- reviewing investment performance
FAQs
Is this the same as capital gains tax?
No. This calculator estimates the gain or loss before tax.
Explore more
More calculators in this topic
Continue exploring
Related calculators
Explore the next calculations most relevant to this topic.
tax-compliance
Capital Gains Tax Calculator
Estimate federal capital gains tax on investments, real estate, and other assets.
investments
Stock Profit Calculator
Calculate stock profit or loss from shares, buy price, sell price, and fees.
investments
Cryptocurrency Profit Calculator
Calculate crypto profit or loss from coin amount, buy price, sell price, and fees.