Running a živnostenský list (trade license) in Czech Republic is one of the best deals in European freelancing. I say this having studied economics and finance, and having worked with hundreds of freelancers since 2017. The 60/40 flat expense rule alone is absurdly generous compared to what most Western European countries offer. The low social contributions (relative to income), the flat-rate tax option, the 3-year capital gains exemption on investments... it's a genuinely favorable setup for self-employed people.
But, and this is a big but: nobody holds your hand. There's no HR department setting up your pension. No employer matching your contributions. No automatic sick pay if you break your ankle hiking in Český ráj. And if you want a mortgage, the very tax trick that's saving you money is going to make the bank think you earn half of what you actually earn.
This article is everything I've learned helping freelance expats sort out their money in Czech Republic. The good parts, the traps, and the stuff nobody mentions until it's too late.
The 60/40 Rule: Your Best Friend and Your Mortgage's Worst Enemy
If you provide services (IT, consulting, design, marketing, teaching, translation), you can declare 60% of your gross revenue as flat expenses without proving a single receipt. You only pay tax and social contributions on the remaining 40%. This is called paušální výdaje, and it's brilliant for tax optimization.
Annual revenue: 1,200,000 CZK (100,000/month)
Flat expenses (60%): 720,000 CZK
Taxable income: 480,000 CZK
Income tax (15%): ~72,000 CZK
Without flat expenses, your taxable income would be the full 1,200,000 CZK (minus actual expenses, which for many service freelancers are close to zero). Tax on 1,200,000 CZK would be roughly 180,000 CZK.
Savings from using flat expenses: ~108,000 CZK per year. Plus additional savings on social and health insurance contributions, which are also calculated from the lower base.
Beautiful, right? Now here's the gut punch. When you apply for a mortgage, the bank looks at your tax return and sees 480,000 CZK annual income. Not 1,200,000. Not your bank balance. Your declared taxable income. I covered the exact math in the mortgage guide, but the short version: the same trick that saves you 108,000 CZK in taxes costs you roughly half your mortgage borrowing capacity.
What can you do? If you're planning to buy property in the next 2 years, consider switching to actual expenses (skutečné výdaje) for one or two tax years. Yes, you'll pay more tax. But your declared income will be much higher, and the bank will lend you accordingly. It's a trade-off, and the right answer depends on how much you want to borrow versus how much you'd pay in extra tax. We help clients model both scenarios.
There's also the option of combining incomes with a partner. If your partner is employed, their income gets added to the borrowing capacity at full value. That can make a big difference.
The 2026 OSVČ Payment Changes
If you're a main-activity freelancer (hlavní činnost), your minimum monthly payments went up in 2026. Let me give you the updated numbers from ČSSZ and VZP:
Social insurance (ČSSZ): 5,720 CZK (the new government has pledged to cap this at 5,005 CZK once legislation passes; pay the higher amount for now, any overpayment will be refunded)
Health insurance (VZP): 3,306 CZK
Total minimum: 9,026 CZK/month before you earn anything
First-year freelancers (new to business in the last 3 years): social insurance discounted to 3,575 CZK
Side-activity freelancers (vedlejší činnost): social insurance only if profit exceeds 117,521 CZK/year
The flat-rate tax (paušální daň) is 9,984 CZK/month for Band 1 (up to 1,000,000 CZK revenue). One payment covers income tax, social, and health insurance. No tax return required. Simple and clean. But you can't claim any deductions (mortgage interest, pension contributions, spouse credit). Run the numbers for your specific income. Use our salary calculator to compare.
The Insurance Gap Nobody Warns You About
Employed people in Czech Republic get sick pay. Not great sick pay, but something. Your employer pays your first 14 days of illness. After that, ČSSZ takes over at reduced rates. As a freelancer? Unless you've opted into voluntary sickness insurance (nemocenské pojištění OSVČ), you get absolutely nothing.
Let me repeat that. You can be lying in a hospital bed for two months, unable to invoice a single client, and your income drops to zero. Your social insurance deposits? Still due. Your health insurance? Still due. Your rent? Still due.
Voluntary sickness insurance through ČSSZ costs a few hundred CZK per month. But the coverage is minimal: payments start after 14 days and cover a fraction of your average earnings. If you earn well above average (most expat freelancers do), the ČSSZ payout won't come close to covering your expenses.
This is where private income protection insurance becomes essential. It kicks in faster, pays a higher percentage of your actual income, and covers scenarios like disability that ČSSZ handles poorly. Check our sick leave and invalidity calculator to see the actual gap between what ČSSZ pays and what you need.
You should also have liability insurance (odpovědnost za škodu). If your code crashes a client's production server, or your marketing campaign accidentally uses copyrighted material, or your consulting advice leads to a financial loss, professional liability covers the claim. Costs maybe 200-400 CZK per month. Cheap peace of mind.
Your Pension Is 100% Your Problem
As a freelancer, nobody is matching your pension contributions. There is no employer adding money to your DPS or DIP. Every crown of your retirement savings comes from you. This makes the combination strategy (DPS for the state bonus + DIP for investment flexibility) even more important than for employees.
The minimum worthwhile approach: 1,700 CZK/month into DPS to max the 340 CZK state bonus, plus whatever additional amount you can consistently invest through DIP. The combined tax deduction of 48,000 CZK/year reduces your taxable income, which for a freelancer directly reduces your social and health insurance base too. It's a double benefit.
Full details in our pension system guide.
The Freelancer's Financial Safety Net
Employees can have a bad month and their salary still arrives. Freelancers can have a bad month and the bank account starts screaming. Here's what I recommend based on years of working with self-employed clients:
Emergency fund: 3-6 months of expenses. Not revenue. Expenses. Rent, insurance payments, food, minimum social and health deposits. Keep this in a liquid savings account. Some Czech banks offer 3-5% interest on savings in 2026, so at least your buffer is earning something.
Tax reserve: 25-30% of every payment. Set this aside automatically when you receive an invoice payment. The annual reconciliation (přehled o příjmech a výdajích) can result in a surprise top-up payment if your income exceeded your advance deposits. Having the money ready is the difference between "fine" and "panicking in April."
Client diversification. If one client represents more than 50% of your revenue, you don't have a freelance business, you have a job with extra paperwork. Losing that client would be a financial emergency. Spread your income across at least 3-4 clients if possible.
Insurance stack. Voluntary ČSSZ sickness insurance (minimal cost, basic coverage) + private income protection (covers the real gap) + professional liability (protects against client claims). Total cost: maybe 1,000-2,000 CZK/month. Cost of not having it when you need it: potentially catastrophic.
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Let's TalkAbout the author: Nicolas Griss moved from Montreal to Prague in 2011 and co-founded Profi Expats in 2017. Many of our team members started as freelancers in Czechia before becoming financial advisors, so we know this world from the inside. This article is for informational purposes. Consult a tax advisor for your specific situation.