Capital Gains Tax Calculator
When you sell an investment for a profit, capital gains tax can take a big chunk of your returns. This free calculator shows you exactly how much tax you’ll owe — and how much more you keep by holding longer or choosing the right tax regime.
Capital Gains Tax Calculator
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Selling for profit? See how much tax you really pay — and how it reduces your net gains. Compare short-term vs long-term rates.
tax owed on gains
How Capital Gains Tax Works and Why It Matters
Capital gains tax is charged on the profit (sale price minus purchase price) when you sell an asset. Rates and rules vary by country, holding period, and tax timing:
- Short-term (held <1 year): often taxed as ordinary income (higher rates)
- Long-term (held >1 year): usually lower rates to reward patience
- Annual taxation (e.g. some NL regimes): tax on paper gains each year
- End-of-period (most countries): tax only when you sell
Even a “low” rate can cost you tens of thousands over decades because it reduces the capital available for compounding.
Key Benefits of this Calculator
- Compare tax regimes across countries (NL, US, UK, DE, BE, and custom)
- See the difference between annual vs end-of-period tax
- Visualize cumulative tax buildup over time
- Make informed decisions about when to sell
Frequently Asked Questions
What is the difference between short-term and long-term capital gains tax?
Short-term gains (held <1 year) are often taxed at your ordinary income rate. Long-term gains (held >1 year) usually get lower rates to encourage long-term investing.
How does annual vs end-of-period taxation work?
Annual taxation means tax is paid on gains each year (e.g. some NL regimes). End-of-period means tax is only due when you sell (most countries).
Is this calculator accurate for my situation?
It uses standard compound growth math and current tax rates. It’s an educational tool — consult a tax advisor for your specific case.