Effectivetax rate

In plain words

The effective tax rate is the real share of tax in your profit or income. It is calculated simply: tax actually paid divided by profit. It almost always differs from the headline rate written in the statute, and the difference can be significant.

The reasons for the gap are clear: deductions and reliefs, different rules on allowable expenses, special regimes for certain activities, credit for taxes paid in other countries, losses from previous periods. A country with a high headline rate and generous deductions may turn out to be more favourable than a country with a low rate and strict rules.

That is exactly why comparing jurisdictions on the headline rate is pointless — it tells you nothing. What needs to be calculated is the effective burden for your particular structure of income and expenses. The measure is also important in an international context: global minimum tax rules are based on the effective rate, not the one written in the statute.

When this calculation is needed

What affects the measure

How to calculate it

1. 01Gather the structure of income and expenses
2. 02Identify allowable deductions
3. 03Calculate the actual tax
4. 04Divide by profit
5. 05Compare jurisdictions

What you need to know

• The effective rate almost always differs from the headline one
• A high rate with deductions may be better than a low one without them
• The measure is calculated for your particular structure
• International minimum tax rules are based on it
• The calculation requires data, not general reasoning

Common mistakes

• ✕Comparing countries on headline rates
• ✕Calculating the burden without deductions
• ✕Ignoring credit for taxes paid abroad
• ✕Forgetting the second level — the tax on dividends
• ✕Relying on general articles instead of a calculation on your own figures

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