Four free calculators with current parameters, each on its own page, with an explanation of how the calculation actually works:
Flat-rate tax calculator
Monthly tax and contributions by activity: IT, consulting, design, education, trades. Including the reduction for new businesses.
Calculate flat-rate →Gross to net salary
Convert gross to net salary and back, with income tax, contributions and the total cost to the employer.
Calculate salary →Freelancer calculator
Model A or Model B: tax and contributions on quarterly income, and which model costs you less.
Compare models →Annual income tax
Whether you are liable for 2025 and how much the tax comes to, with personal allowances and the relief for under-40s.
Check liability →Who are these calculators for?
The flat-rate tax calculator is for anyone planning to register a flat-rate business in Serbia or wanting to check their assessment. For IT activity (code 6201) it uses the national average, so the figure is very close to exact. The gross-to-net calculator is used by both employees and employers budgeting salaries. The freelancer calculator compares Model A and Model B for quarterly reporting of income from abroad. The annual income tax calculator shows whether you crossed the 5,439,096 RSD threshold for 2025 and what the tax comes to. That return is due by 15 May 2026.
Not sure what suits you best: freelancing, flat-rate, full bookkeeping or an LLC? See our guides for entrepreneurs or get in touch. We have 35 years of experience with flat-rate taxpayers, IT entrepreneurs and LLCs in Novi Sad, and we work in English.
Note: these calculators are informational. The exact flat-rate liability is set by a decision of the Tax Administration.