Turkish Business Income Tax Calculator (Sole Proprietors)
Compute business profit, the income tax base, income tax, provisional tax credit, tax burden and after-tax profit for a sole proprietor.
Things to keep in mind
- Simplified-method taxpayers are exempt under art. 20/A; this tool is for the actual method.
Calculator
Result
Enter the values and press Calculate to see the result here.
About this tool
Business profit is revenue minus cost of sales and deductible expenses. Non-deductible expenses are added back, and exemptions, deductions and prior-year losses are subtracted to reach the base, which is taxed under the tariff for income other than wages.
How to use
- Enter revenue and costs.
- Enter add-backs, exemptions and losses.
- Enter provisional tax and withholding and press Calculate.
Notes
Tax burden = tax ÷ business profit.
Frequently asked questions
The base is taxed under the progressive tariff; provisional tax is credited.
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Last updated: September 30, 2026