Disclaimer: This article is informational and does not constitute tax or legal advice. Amounts and rules change — always verify the current state at financnisprava.gov.cz or with a licensed Czech tax advisor.
The Czech paušální daň (flat-tax regime) combines income tax, pension insurance and public health insurance into one monthly payment. If all year-end conditions are met, the taxpayer normally does not file the three annual documents. This guide explains the 2026 amounts and the limits a foreign OSVČ must still monitor.
What Is the Paušální Daň?
The flat tax is a simplified regime for OSVČ (self-employed persons) defined in §2a of the Income Tax Act. Instead of filing three separate annual documents and reconciling advances, you make one fixed monthly payment that bundles together:
- Your income tax
- Your social security (pension) contribution to ČSSZ
- Your public health insurance contribution
In exchange for that single payment, you are freed from filing an income tax return, a ČSSZ statement (přehled), and a health insurer statement, provided you stay within the rules for the whole year. For a busy freelancer who hates paperwork, the administrative saving alone is significant. If you are still setting up as self-employed, our freelancing in Czech Republic guide covers the registration steps that come first.
Who Is Eligible?
The regime is deliberately restricted to small, simple businesses. To qualify you must, broadly:
- Be an OSVČ with annual income up to 2,000,000 CZK.
- Not be a VAT payer and have no obligation to register as one. Registration as an identified person is expressly allowed; its VAT duties continue alongside the flat-tax regime. See our identified-person guide.
- Participate in the Czech public pension and health insurance systems — a point of particular relevance for foreigners, discussed below.
- Have no income from employment (the only exception is work taxed by final withholding tax, such as a small DPP agreement).
- Not be a partner in a general partnership (v.o.s.) or a general partner of a limited partnership (k.s.), and not be in insolvency proceedings.
- Keep other taxable income under Sections 8–10 (capital, rent, miscellaneous) within 50,000 CZK a year — see below.
You must also monitor taxable income outside self-employment. Income under Sections 8–10 that is neither exempt nor subject to final withholding tax may total no more than 50,000 CZK if the year is to settle as flat tax. Taxorio does not record capital income, rent or miscellaneous income, so it cannot monitor this limit for you.
The 2026 Bands and Monthly Payments
The flat tax has three bands. The monthly amount depends on which band you fall into, which in turn depends on your income level and the nature of your activity. For Band 1, law 90/2026 Coll. reduced the 2026 liability retroactively to January: the final amount is 9,162 CZK for every month of 2026. Taxpayers who had already paid 9,984 CZK from January through June therefore have an overpayment. Bands 2 and 3 were unchanged.
| Band | Monthly payment (2026) | Notes |
|---|---|---|
| Band 1 | 9,162 CZK (109,944 CZK for the full year) | 9,984 CZK was initially paid Jan–Jun; the 4,932 CZK difference is an overpayment. |
| Band 2 | 16,745 CZK | Unchanged in 2026 |
| Band 3 | 27,139 CZK | Unchanged in 2026 |
Which Band Do You Fall Into?
The band is determined by a combination of your income level and what kind of activity generates it (activities eligible for higher flat-rate expense percentages — the 80 percent and 60 percent categories from our flat-rate vs real expenses guide — allow you to earn more while staying in a lower band). In outline:
- Band 1: income up to 1,000,000 CZK from any activity; up to 1,500,000 CZK if at least 75 percent of income is from 60 percent or 80 percent activities; up to 2,000,000 CZK if at least 75 percent is from 80 percent activities.
- Band 2: income up to 1,500,000 CZK from any activity; up to 2,000,000 CZK if at least 75 percent comes from activities eligible for a 60 or 80 percent expense rate.
- Band 3: income up to 2,000,000 CZK from any activity.
Always confirm the activity classification and the 75 percent composition test. If actual income exceeds the chosen band but still fits a higher band, the law may allow an “alternative amount of flat tax” notification and a top-up; it is not automatically treated as if the whole arrangement never existed.
Taxorio boundary: the application does not know the exact mix of your activities. It therefore compares income with the lowest certain threshold and, above it, warns that a higher limit may apply. It does not select a band or declare that you have fallen out of one.
The Deadline You Cannot Miss: 10 January
If you are already self-employed, you must generally notify the tax office by 10 January of the year in which you want to enter the regime. A genuine start of self-employment later in the year is the important exception: the notification is filed no later than the day the activity starts. Merely resuming an activity without meeting the statutory start rules does not create a free mid-year choice.
The date shifts slightly when 10 January falls on a weekend. For entry from 2026, because 10 January fell on a Saturday, the deadline was 12 January 2026. For entry from 2027, the deadline will again be in early January 2027 — mark it now if you are considering the switch. Notification is made to the tax office (via MOJE daně or your datová schránka).
If you already run an OSVČ, prepare the comparison before January. If you are only starting during the year, verify the special start-date procedure before filing.
The Big Catch: No Tax Credits or Deductions
Here is where the flat tax stops being a no-brainer. In the flat-tax regime you cannot claim any tax credits or deductions. That includes:
- The basic taxpayer credit (30,840 CZK per year)
- Child tax credits
- The spouse credit
- Mortgage interest deductions, pension and life-insurance contributions, charitable gifts, and so on
This is why the flat tax is not always cheaper. Consider a freelancer with two children and a mortgage: on a normal return with flat-rate expenses, their child credits and mortgage-interest deduction might wipe out most of their income tax. In the flat-tax regime those benefits vanish, and the fixed monthly payment can end up higher than what they would owe on a normal return. Low earners and those with large deductions are the two groups most likely to lose out.
By contrast, a single freelancer with no dependents and no big deductions, earning a solid income with low costs, is often the ideal flat-tax candidate — the simplicity is free money for them. To see which side of the line you are on, compare the flat tax against a normal return using the methods in our flat-rate vs real expenses guide.
What the Flat Tax Means for Foreigners Specifically
Two points deserve emphasis for non-Czechs. First, eligibility requires that you participate in the Czech public pension and health insurance systems. If your health or pension coverage is arranged outside Czech Republic, or is in some transitional state, you may not qualify — check your status carefully. Our guide to health insurance for self-employed foreigners explains who must be in the Czech public system.
Second, the simplified filing outcome depends on year-end conditions. Monitor the threshold for your selected band, the overall 2,000,000 CZK ceiling, other income and full VAT-payer status. Cross-border work may make you an identified person, but that status alone does not disqualify you. Becoming a full VAT payer is different and normally requires a later reconciliation.
A Worked Comparison of the Two Regimes
Take a freelancer in Band 1. Their 2026 flat-tax amount is 9,162 CZK × 12 — 109,944 CZK covering income tax, pension and health. Payments of 9,984 CZK initially made from January through June create a 4,932 CZK overpayment; they do not increase the annual liability. Compare that total with a standard-regime calculation using the freelancer's actual activity, income, expenses and available reliefs.
For example, children or eligible housing interest can change the standard-regime result, while the fixed flat-tax payment does not shrink. This does not make either regime universally better; it means the comparison must use the taxpayer's own inputs.
Before committing, always model your specific case — including how much your credits are actually worth — using the calculators linked below rather than assuming the simplest option is the cheapest. The table below summarises when each route tends to win:
| Feature | Paušální daň (flat tax) | Normal return |
|---|---|---|
| Paperwork | One monthly payment, no annual filings | Income tax return + ČSSZ + health statements |
| Tax credits (child, spouse, mortgage) | Not available | Fully available |
| Income ceiling | 2,000,000 CZK | No ceiling |
| VAT payers | Not eligible | Eligible |
| Best for | Single, low-cost, no big deductions | Families, high deductions, high costs |
| Entry | Existing OSVČ by 10 January; a new business at the start of its activity | Any time; return filed annually |
What Taxorio Can and Cannot Check
Taxorio shows the recurring deadline and compares recorded Section 7 income with the lowest certain threshold for your band. Because it does not know the activity mix or income under Sections 8–10, it cannot certify your band or continued eligibility. Treat its status as a warning and verify the missing facts yourself.
Before you commit, model the decision with our free flat-rate tax calculator and cross-check your contributions with the social and health advances calculator, then keep an eye on all the key dates with our tax deadlines overview. If it turns out the flat tax is not right for you, the same expense-method comparison will show whether flat-rate or real expenses saves you more on a normal return.
If you are comparing regimes for next year, keep complete income records and prepare before the January notification window. For cross-border insurance, mixed activities or other income, confirm the conclusion with the relevant authority or a licensed Czech tax adviser.
Remember: The 2026 monthly amounts are 9,162 CZK, 16,745 CZK and 27,139 CZK. The first-band difference initially paid at 9,984 CZK is an overpayment. Existing businesses generally notify by 10 January; a genuine start during the year follows its own deadline. Verify eligibility and the correct band at financnisprava.gov.cz.