26thEvery month
MUHSGK
Withholding + social security
Combined declaration: income-tax withholding on payroll and supplier invoices, plus the social-security premium (SGK) for every employee. Filed by the 26th of the following month.
Tax, Accounting & R&D
Bookkeeping & Tax Filings
Monthly bookkeeping under the Turkish Uniform Chart of Accounts, every statutory filing on its statutory date, run by a licensed Turkish CPA on the e-fatura and e-defter rails. Built so your investors and your CFO can read it.
- Monthly close
- Licensed CPA
- E-defter / e-fatura
- Investor-readable
What it is
Every Turkish company runs the same monthly compliance rhythm: a VAT (KDV) return by the 28th, a combined withholding and social-security premium declaration (MUHSGK) by the 26th, a quarterly advance corporate tax (geçici vergi), and an annual corporate tax return by 30 April for the prior calendar year. Miss a filing or misclassify a line and the special-irregularity fines start; underpay and the tax-loss penalty (vergi ziyaı cezası) lands at one to three times the underpayment. Our partner CPA firm runs the full stack on e-defter and e-fatura, closes the month by working day 7, and produces a trial balance and a management-view P&L your board and investors can actually use. The output is built once: statutory output for the Revenue Administration, management output for you, with the bridge between them documented so an auditor can walk it cleanly.
The filing calendar
Four dates run the year.
Two filings every month, one every quarter, one every year. Miss a date and the special-irregularity fines start. Misclassify and the tax-loss penalty (vergi ziyaı cezası) lands at one to three times the underpayment. We run them all.
28thEvery month
VAT (KDV)
Standard 20%, zero-rated on exports
VAT return computed against output (sales) and input (purchases) tax. Service exports are zero-rated; the recoverable input VAT credit feeds the VAT Refund Recovery service. Filed by the 28th of the following month.
17thEvery quarter
Geçici Vergi
Quarterly advance corporate tax
Advance corporate tax on the quarter's profit, paid against the annual liability. Filed by the 17th of the second month after each quarter. Reconciled at the annual return.
30 AprEvery year
Annual return
Kurumlar Vergisi Beyannamesi
Annual corporate tax return for the prior calendar year. Service-export exemption (Article 10/1-ğ), tech-park exemption, and R&D Centre deductions applied. Transfer-pricing form filed alongside.
On top of these: stamp tax where triggered, BA-BS forms above threshold, year-end TFRS statutory accounts under IAS 29 inflation accounting where applicable, and the transfer-pricing form filed with the annual return.
The statutes behind the rhythm
Four laws shape every line that hits your books.
The Tax Procedure Law sets the rules for record-keeping, evidencing, and penalties. The Corporate Tax Law sets the headline 25% rate and the deductions that take qualifying income to zero. The VAT Law runs the monthly KDV cycle and the zero-rating on exports. The Social Insurance Law runs payroll-side premiums. Our CPA holds all four in working memory so the same transaction is treated correctly for every regime at once.
VUK 213
Tax Procedure Law. Record-keeping, evidencing, statute of limitations, penalties.
Law 5520
Corporate Tax Law. 25% headline rate. Article 10/1-ğ service-export deduction.
Law 3065
VAT Law. Standard 20%, zero-rated on exports. Refund mechanism.
Law 5510
Social Insurance Law. SGK premiums and the MUHSGK declaration.
How we do it
Onboarding to year-end audit file.
Monthly close by working day 7. Every statutory filing on its statutory date. One file at year-end that an auditor can pick up without rework.
Onboarding
Chart of accounts mapped from the Turkish Uniform Chart of Accounts (Tek Düzen Hesap Planı) to your group reporting view. Opening balances loaded. E-fatura, e-defter, and e-arşiv handover from the formation engagement completed. Bank feeds and processor exports configured.
Monthly ingestion
E-invoices issued and received, bank statements (TRY and foreign-currency sub-accounts), payroll runs, and processor settlements ingested daily. Foreign-currency lines converted at Central Bank (TCMB) reference rates on transaction date.
Monthly close
Journal entries posted, accruals booked, intercompany flows tied to the IP and Royalty Agreements, service-export evidence file updated. Close completed by working day 7. Trial balance and management-view P&L shared with you.
Statutory filings
VAT (KDV) return by the 28th. MUHSGK (combined withholding and social-security premium declaration) by the 26th. Stamp tax where triggered. BA-BS forms above threshold. Quarterly advance corporate tax (geçici vergi) by the 17th of the second month after quarter-end.
Annual return
Annual corporate tax return prepared and filed by 30 April for the prior calendar year. Service-export deduction (Article 10/1-ğ), tech-park exemption, and R&D Centre deductions applied where eligible. Transfer-pricing form filed with the return.
Year-end and audit prep
Year-end statutory accounts under TFRS (Turkish Financial Reporting Standards, converged with IFRS). Inflation accounting under IAS 29 where applicable. Audit-ready file delivered for any external audit, financing, or DD round.
What's included
The full statutory stack on the retainer.
- Monthly bookkeeping in TRY under the Turkish Uniform Chart of Accounts
- Working-day-7 monthly close with management-view P&L and trial balance
- VAT (KDV) return filed by the 28th
- MUHSGK (withholding + SGK premium) filed by the 26th
- BA-BS forms where threshold is met
- Stamp tax assessed and filed where applicable
- Quarterly advance corporate tax (geçici vergi) computation and filing
- Annual corporate tax return filed by 30 April
- Service-export deduction, tech-park, and R&D Centre exemptions applied where eligible
- Transfer-pricing form filed with the corporate-tax return
- Year-end TFRS statutory accounts and audit-ready file
- Direct line to your assigned CPA during business hours
Key facts
Rates, regimes, and the calendar around them.
- Filing calendar
- MUHSGK by the 26th of the following month. VAT (KDV) by the 28th. Quarterly advance corporate tax (geçici vergi) by the 17th of the second month after quarter-end. Annual corporate tax return by 30 April for the prior calendar year.
- Standard corporate tax rate
- 25% on net taxable income (raised from 23% in 2024). Financial institutions are taxed at 30%. Service exports, tech-park income, and R&D Centre activity remain exempt under their respective regimes.
- Domestic Minimum Tax
- Law No. 7524 (August 2024) introduced a 10% domestic minimum tax from fiscal year 2025. Computed before certain exemptions, but the tech-park exemption (Law 4691), R&D Centre exemption (Law 5746), and service-export exemption (Article 10/1-ğ) are specifically preserved against the minimum-tax base.
- Pillar 2 for large groups
- Türkiye adopted the OECD Pillar 2 global minimum tax from fiscal year 2025. A 15% minimum effective rate applies to multinational groups with consolidated revenue at or above EUR 750M. Most studios are below the threshold; we flag it during onboarding.
- VAT (KDV)
- Standard rate 20%, reduced rates 10% and 1%. Service exports are zero-rated under VAT Law Articles 11 and 12, with input VAT recoverable through the refund mechanism handled by our VAT Refund Recovery service.
- Currency
- Books are kept in TRY. Foreign-currency invoices and receipts are converted at TCMB reference rates on transaction date. Multi-currency sub-accounts mean original-currency receipts sit cleanly in the evidence file without forced conversion.
- Inflation accounting
- Türkiye returned to high inflation accounting under IAS 29 from fiscal year 2023. We run the restatement under TFRS where required, with separate tax-side adjustments applied per the 2024 tax-procedure amendments.
- Retention and language
- Statutory books and records retained for 5 years under VUK and 10 years under the Turkish Commercial Code. Books kept in Turkish. Bilingual records permitted; the Turkish version is the authoritative one in any dispute.
Bundled in
- Starter✓
- Builder✓
- Enterprise✓
Pricing
Starter retainer from USD 650 per month. Builder retainer from USD 950 per month. Enterprise retainer from USD 2,400 per month. Pricing scales with transaction volume, headcount, and the number of jurisdictions feeding into the books.
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Türkiye's headline incentive for foreign-facing software and gaming studios: a 100% corporate-tax exemption on qualifying service-export income under Article 10/1-ğ. The contract structure, banking flow, and bookkeeping designed to qualify every year, not just the first.
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Payroll Management
Monthly gross-to-net under Income Tax Law No. 193 and Social Insurance Law No. 5510. Every exemption applied, every declaration filed, every payslip bilingual. R&D and tech-park stack handled where it applies.
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Financial Reporting (IFRS-aligned)
A parallel management view of your Turkish numbers, in TFRS (IFRS-converged) format with IAS 29 inflation accounting handled. Quarterly for Builder, monthly for Enterprise. Built so a Big-4 auditor or an institutional investor picks it up without rework.
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