Here's something that frustrates us: small business owners paying more tax than they should because they don't know what they can deduct. Every year, legitimate business expenses go unclaimed—money that could be reinvested into growing your business or simply kept in your pocket.
Let's fix that. Here are the deductions Czech small business owners often miss, along with tips to make sure you're claiming everything you're entitled to.
Home Office Expenses
Working from home? You can deduct a portion of rent, utilities, internet, and property maintenance. The deduction is typically based on the percentage of your home used exclusively for business purposes.
Keep detailed records of all expenses and measure the square meters allocated to your workspace. A dedicated room is easiest to justify, but a clearly defined workspace area can also qualify.
Vehicle and Transportation Costs
Business use of your vehicle is deductible. You can choose between the actual expense method (tracking all costs including fuel, maintenance, insurance) or the standard mileage rate. The Czech standard rate for 2025 is approximately 4.70 CZK per kilometer.
Whichever method you choose, maintain a logbook showing date, destination, purpose, and kilometers driven. Without a logbook, you're unlikely to survive an audit challenge.
Professional Development and Training
Courses, seminars, conferences, and professional certifications directly related to your business are fully deductible. This includes online courses, industry-specific training materials, books, and professional memberships.
Investing in yourself while getting a tax deduction? That's a win-win.
Technology and Equipment
Computers, software licenses, smartphones, and other technology purchases are deductible. Items under 80,000 CZK can often be expensed immediately, while more expensive equipment may need to be depreciated over time.
Don't forget about subscriptions: cloud storage, project management tools, design software— all deductible if used for business.
Business Insurance Premiums
Liability insurance, professional indemnity insurance, and business property insurance premiums are fully deductible. This also includes insurance for business vehicles and equipment.
Marketing and Advertising
Website hosting, online advertising, printed materials, business cards, and promotional items are all deductible. This includes expenses for social media advertising, search engine marketing, and content creation.
Office Supplies and Small Items
Stationery, printer ink, cleaning supplies, coffee for clients, and other day-to-day office needs add up. Track these small expenses throughout the year—they're often forgotten but collectively significant.
Bank Fees and Transaction Costs
Business account fees, payment processing fees, and bank charges are deductible. If you have a business loan, the interest portion is also deductible. Currency conversion fees for international transactions count too.
Retirement Contributions
Contributions to supplementary pension insurance can be deducted up to 24,000 CZK annually. Self-employed individuals should consider this both for retirement planning and immediate tax savings.
Bad Debts
If a client fails to pay an invoice and you've exhausted collection efforts, you may be able to write off the bad debt as a business loss. Document all collection attempts carefully—this is an area auditors scrutinize closely.
Tips for Maximizing Your Deductions
Keep digital copies of all receipts (your phone camera works fine). Maintain separate business and personal accounts—mixed accounts are a nightmare for both accounting and audits. Categorize expenses regularly, not just at year-end.
Most importantly, consider working with a tax advisor to ensure you're claiming all eligible deductions. The cost of professional advice often pays for itself many times over in found deductions and avoided mistakes.