When you are self-employed in the Czech Republic, one of the most important decisions you will make for your taxes is how you choose to account for your business costs. Unlike some countries where bookkeeping methods are a matter of preference, in Czechia the choice between flat expenses and actual expenses directly shapes your tax base. It affects not only your paperwork, it can materially alter how much tax you pay.
This article breaks down both methods and helps you decide which one is right for you based on your income, cost structure, and long-term business plans.
What are Flat Expenses?
“Flat expenses” (paušální výdaje) are a predetermined percentage of your gross income that you can automatically deduct without tracking individual receipts. Instead of collecting every receipt and logging every purchase, the tax law lets you take a standard deduction based on your type of activity – typically 30%, 40%, 60% or 80% of your income.
For example:
80% flat expenses for craft trades and similar activities
60% flat expenses for many service-oriented trades
40% flat expenses for some professional services
30% flat expenses for rental income
The deduction reduces your tax base without any additional documentation. This can significantly simplify your annual tax return and reduce administrative pressure throughout the year.
Important: You must apply either flat expenses OR actual expenses. You cannot mix them within the same income category.
What are Actual Expenses?
As the name suggests, actual expenses are your real, documented business costs. This method requires careful bookkeeping and supporting evidence for all deductions.
Typical actual expenses include:
- Office rent or workspace costs
- Materials, tools, software subscriptions
- Marketing and advertising costs
- Vehicle costs (if used for business and documented properly)
- Professional services (accounting, legal)
Actual expenses often result in a higher deduction when your real costs exceed the standard flat rate available for your type of work. However, this requires significantly more documentation and oversight.
Flat Expenses vs Actual Expenses: Which One Saves You More?
There’s no universal answer but the right choice typically hinges on the relationship between your actual business costs and the flat-rate percentage you could claim.
Scenarios where flat expenses are advantageous:
- You have low business costs relative to your income
- You want minimal bookkeeping and fewer receipts
- You want predictable, simple tax reporting
- Your flat-rate percentage (e.g., 60% or 80%) exceeds your actual documented costs
Scenarios where actual expenses are better:
- Your real costs are higher than what the flat rate allows
- You have industry-specific expenses (e.g., equipment depreciation)
- You want accurate reflection of your business profitability
- Documentation and bookkeeping discipline aren’t barriers for you
- You plan long-term financial decisions like loans or scaling
A self-employed photographer with lots of equipment and travel costs might owe less tax under actual expenses than under a standard flat-rate deduction even with diligent bookkeeping.
Practical Examples
Let’s illustrate with two hypothetical freelancers:
Anna – Graphic Designer
Low overhead: her only real expenses are software subscriptions and occasional workshop fees. In her case, the 60% flat-rate deduction may reduce her taxable income more than documenting each receipt.
David – Online Developer
High costs: server subscriptions, hardware, co-working office, and frequent business travel. David’s documented expenses could exceed the flat rate deduction, making the actual expenses method more tax-efficient.
In cases like these, simply applying the flat rate because “it’s easier” could cost significant tax savings.
Important Rules and Limitations
No Mixing: For a given income type, you must choose either flat expenses or actual expenses. You cannot combine them for the same revenue stream.
Different Flat Rates by Income Category: The percentage varies depending on the nature of your trade or profession.
Documentation Still Matters: With actual expenses, every deduction must be supported with evidence. The tax authority may ask for receipts, invoices, or contracts.
Which Method Fits You Best?
There’s no one-size-fits-all answer, but a few questions can help:
- Are your actual business expenses consistently lower than the flat-rate percentage?
If yes, flat expenses might be simpler and financially beneficial. - Do you have significant documented expenses that exceed the flat-rate allowance?
In that case, using actual expenses could lower your overall tax liability. - Do you plan to scale, invest in equipment, or prove income for loans or mortgages?
Detailed actual accounting can increase financial credibility, even if it requires more effort.
Final Thought
Choosing between flat expenses and actual expenses is not just a tax calculation,
it’s a strategic financial decision about how your business will grow, document income, and structure costs over time. If you’re unsure which method fits your situation, running the numbers or getting a professional evaluation and can save you tens of thousands of CZK in tax inefficiencies over several years.
At Taxelent, we help self-employed professionals analyze both methods in the context of your real finances not just theory.
