Taxes & Deductions: A Deep Dive for Gig Workers in Turkey

Turkey's tax system for gig workers is administered by the Revenue Administration (GİB — Gelir İdaresi Başkanlığı). Self-employed workers face progressive income tax, stoppage (withholding), and potential VAT. Understanding the tax structure, simplified bookkeeping options, and available deductions enables Turkish gig workers to manage their obligations in a high-inflation environment.

1. Income Tax (Gelir Vergisi) — Progressive Rates

Progressive rates from 15% to 40%

Turkish income tax rates (2025): 15% up to TRY 110,000; 20% on TRY 110,001-230,000; 27% on TRY 230,001-580,000; 35% on TRY 580,001-3,000,000; and 40% above TRY 3,000,000. Self-employed income (serbest meslek kazancı for professionals, ticari kazanç for commercial activities) is calculated as revenue minus expenses. Annual returns (yıllık gelir vergisi beyannamesi) are filed in March. Quarterly advance tax payments (geçici vergi) at 15% of quarterly profit are due in May, August, November, and February.

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GİB — Revenue Administration: https://www.gib.gov.tr/

2. Simple Ledger Bookkeeping (Basit Usul)

Simplified bookkeeping for smaller businesses

Smaller commercial businesses (below revenue thresholds varying by activity) can use basit usul (simple method) — simplified bookkeeping with a purchase-sales ledger. Income tax is calculated on the difference between revenue and documented expenses. Basit usul taxpayers are exempt from VAT. The system significantly simplifies compliance for qualifying gig workers. Professional freelancers (serbest meslek erbabı) maintain a professional income-expense book (serbest meslek kazanç defteri).

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GİB — Basit Usul: https://www.gib.gov.tr/

3. Business Expense Deductions

Costs reducing taxable income

Deductible expenses include: office rent, equipment depreciation (computers at 25%, vehicles at 20%), software, internet and phone (business portion), professional development, vehicle expenses (business portion), travel, marketing, professional fees (mali müşavir/accountant), insurance, SGK contributions (fully deductible), and employee costs. All require proper documentation (fatura/invoices). Vehicle expenses are a common area of scrutiny — maintaining a detailed vehicle usage log supports business-use claims.

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GİB — Deductions: https://www.gib.gov.tr/

4. KDV (VAT) at 20%

Turkish VAT obligations

Turkey's standard KDV rate is 20% (10% for basic food and some services; 1% for newspapers and specific goods). Most self-employed workers must register for KDV, charge it on invoices, and file monthly KDV returns by the 28th of the following month. Input KDV on business purchases is credited against output KDV. Basit usul taxpayers and certain small freelancers may be KDV-exempt. KDV compliance is a significant monthly administrative burden.

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GİB — KDV: https://www.gib.gov.tr/

5. Stopaj — Withholding Tax

Tax withheld at source from professional payments

Companies paying freelancers withhold stopaj (income tax withholding) at 20% on professional service fees. The withheld amount is credited against annual income tax. For gig workers whose total stopaj exceeds final tax (due to deductions), refunds are available. Collecting stopaj certificates (tevkifat belgesi) from all payers is essential for claiming credits on the annual return.

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GİB — Stopaj: https://www.gib.gov.tr/

6. SGK Contributions and Tax Deductibility

Social security payments reducing taxable income

SGK contributions (approximately 34.5% on declared income base) are fully deductible from income tax. For gig workers in the 27% bracket, TRY 50,000 in SGK contributions saves approximately TRY 13,500 in income tax. This deductibility partially offsets the high SGK cost. Gig workers should ensure SGK payments are current — delinquent contributions are not deductible and accrue penalties.

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SGK: https://www.sgk.gov.tr/

7. BES Tax Advantages

30% government matching on private pension contributions

BES contributions receive 30% government matching — an instant return on investment. While BES contributions are NOT deductible from income tax (they are post-tax), the 30% match effectively provides a return superior to any tax deduction. For gig workers in the 15-27% bracket, BES matching (30%) actually exceeds the marginal tax rate — making it the most financially attractive savings vehicle. Combined with investment growth, BES is Turkey's most powerful retirement tool.

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EGM — Pension Monitoring: https://www.egm.org.tr/

8. E-Invoice (e-Fatura) and E-Archive

Electronic invoicing requirements

Turkey requires e-Fatura (electronic invoice) for businesses above revenue thresholds and e-Arşiv Fatura (electronic archive invoice) for others. Most self-employed gig workers use e-Arşiv through GİB's free portal or third-party software. Invoices must include: TC Kimlik No (national ID) or VKN (tax number), invoice date, service description, amounts, and KDV. Proper invoicing is essential for both tax compliance and expense deduction claims.

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e-Fatura Portal: https://www.efatura.gov.tr/

9. Inflation Adjustment (Enflasyon Düzeltmesi)

Revaluation of assets and liabilities for inflation

Turkey's high inflation environment triggers enflasyon düzeltmesi (inflation adjustment) of balance sheets when cumulative inflation exceeds certain thresholds. This revaluation adjusts the tax base to reflect real (inflation-adjusted) rather than nominal values. For gig workers with significant business assets (vehicles, equipment), inflation adjustment can reduce taxable gains on asset disposals. The adjustment is complex — professional accounting guidance is recommended.

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GİB — Inflation Adjustment: https://www.gib.gov.tr/

10. Compliance Tips

Practical guidance for Turkish gig workers

Tips: register with GİB and obtain a tax number (vergi numarası) before starting; choose basit usul if eligible (VAT-exempt, simplified bookkeeping); file monthly KDV returns by the 28th; make quarterly geçici vergi payments; maximize BES contributions for 30% government matching; ensure SGK payments are current for deductibility; collect stopaj certificates from all clients; use e-Arşiv for invoicing; engage a mali müşavir (accountant — TRY 2,000-5,000/month, deductible); and monitor revenue against KDV and basit usul thresholds. In Turkey's high-inflation environment, timely tax payments prevent the real value of tax obligations from growing.

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GİB: https://www.gib.gov.tr/

Disclaimer: This guide is for informational purposes only. Tax laws change frequently. Consult a licensed tax professional in Turkey for personalized advice. Links verified as of April 2026.