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Capital Gains Tax Calculator (Polish Belka Tax)

Enter the proceeds from selling securities, their acquisition cost and any commissions, and the calculator returns your gain, the 19% Belka tax due and the net gain you keep after taxation.

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How we calculate the Belka tax

Gain = sale proceeds - acquisition cost - commissions (never below 0). Tax = gain * 19%. Net gain = gain - tax. If costs exceed proceeds, the result is a loss and the tax is 0 PLN.

Example: proceeds 10,000 PLN, cost 7,000 PLN

You sell shares for 10,000 PLN that you bought for 7,000 PLN, with no extra commissions. The gain is 10,000 - 7,000 = 3,000 PLN. Belka tax: 3,000 * 19% = 570 PLN. Net gain after tax is 3,000 - 570 = 2,430 PLN.

Frequently asked questions

What is the Belka tax?

The Belka tax is the colloquial name for the 19% tax on capital gains in Poland. It covers gains from selling shares, bonds and fund units, as well as interest on deposits. The 19% rate is flat regardless of income level.

How do I calculate tax on selling shares?

First compute income as proceeds minus acquisition costs and commissions. Then multiply income by 19%. The calculator does this automatically: gain = proceeds - cost - commissions, and tax = gain * 19%.

What counts as cost of obtaining income?

Primarily the purchase price of the securities plus brokerage commissions and fees on both buying and selling. For funds, handling fees also count. Costs lower the tax base, so document them carefully.

When costs exceed proceeds, the tax is 0 PLN. A loss can be settled on the PIT-38 form and offset against income from the same source over the next five years, up to 50% of the loss per year.

Gains from selling shares and bonds are settled on the PIT-38 form by 30 April. The basis is the PIT-8C information from brokerage houses. These gains are not combined with income taxed under the scale.

For interest on deposits the payer withholds the tax. However, for selling shares on a brokerage account the taxpayer settles via PIT-38, and the broker only issues a PIT-8C statement.

It can be legally reduced by investing through IKE and IKZE retirement accounts, where gains are exempt from the tax if withdrawal conditions are met. Outside such accounts, avoiding tax on a real gain is not possible.

Yes. Commissions on buying and selling are costs of obtaining income and reduce the tax base. Enter them in the commissions field and they will be subtracted from the gain before the 19% tax is applied.

Crypto gains are also taxed at 19%, but on a separate PIT-38 as a distinct source. They cannot be combined with share losses. This calculator is intended for classic instruments such as shares and bonds.

No. The result is indicative and serves for quick estimation. It is not tax advice and does not replace the PIT-38. For complex or cross-border transactions, consult a tax adviser.

The result is indicative and is not tax advice. It applies the 19% rate (Belka tax) under 2026 rules. Losses are settled on the PIT-38 form; consult a tax adviser if in doubt.

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