Example 1 — 1,000 at 19%
- Gain: 1,000
- Rate: 19%
Tax 190
Net 810
Typical flat withholding on one thousand of gain.
19% capital gains / investment withholding tax (Poland)
Estimate flat tax on interest or investment gains at a linear rate (default 19%, Poland).
Simple model: tax = gain × rate/100; net = gain − tax. Default 19% matches Poland’s common flat withholding on interest and some investment gains — country-specific. Estimate only, not a full investment tax return. Amounts follow the header currency.
Result
Enter data and click Calculate.
How results are calculated
Tax = gain × (rate/100). Net = gain − tax. Default rate 19% (Poland flat withholding).
How to use the calculator
- Enter the gain (interest or capital gain) in the header currency — not the full principal.
- Set the rate (default 19%) or change for your scenario.
- Read tax and net gain.
Usage examples
Example 2 — 5,000 at 19%
- Gain: 5,000
- Rate: 19%
Tax 950
Net 4,050
Linear rate — five times example 1.
Example 3 — 250 at 19%
- Gain: 250
- Rate: 19%
Tax 47.50
Net 202.50
Smaller deposit interest — same proportion.
FAQ
What does investment / deposit withholding tax compute?
A flat tax on gains (interest or investment profit) at the entered rate — an estimate of tax withheld from the gain. Amount in the header currency.
When is this model adequate?
When the gain is taxed at one rate on the base (simple “gain × rate”) without complex reliefs.
Which simplifications are omitted?
Loss offsets, different rates by asset class, and payment timing. This is not a full investment tax return.
What mistake overstates the tax?
Applying the rate to the whole principal instead of the gain only, or entering a figure that is already net of tax.
Why is the default 19%?
It matches Poland’s common flat withholding on interest and some investment gains. Change the rate field for other scenarios.
Which related tools help?
Deposit gain, savings interest, and compound interest — compute the gain first, then tax that amount.
Does this replace a tax return?
No. It is a quick withholding estimate on the gain you enter, not a full return or reliefs.
When should you not use it?
When you have loss offsets, mixed asset rates, or cross-border filing — check local rules or an adviser.