A foreign founder’s Turkish company needs a monthly control rhythm, not a once-a-year tax scramble. The relevant obligations depend on activity, invoices, payroll, VAT position, withholding payments and accounting period. Build a calendar that records the source documents, preparer, reviewer, filing channel and payment evidence for each cycle.
What should happen every month?
Close sales and purchase evidence, reconcile bank and cash movements, classify invoices, and give the accountant a complete document pack early. Check whether VAT, withholding or payroll-related obligations apply to that month; a company without a given transaction does not automatically have the same filing profile as a trading or employing company. Reconcile tax calculations to the ledger before submission and retain the filed return and payment receipt.
The Revenue Administration’s official tax-calendar material says the calendar is updated for changing legislation and that taxpayers must follow their own obligations. Its March 2026 corporate-tax guide states it reflects legislation in force on publication. Use those official sources, not a copied annual checklist, as the final date control.
Quarterly and annual controls
At quarter-end, reconcile the ledger, tax workpapers and supporting documents; assess advance-tax, VAT, withholding and e-document obligations that apply to the company. At year-end, plan financial statements, corporate-tax return data, inventory or fixed-asset support where relevant, and management approvals. The GİB 2026 guide states that the 2025 corporate-tax return was to be submitted from 1 to 30 April 2026; dates can change, so verify the current period before filing.
Use Corpenza’s corporate tax compliance calendar for tax-cycle context and VAT registration guide for VAT-specific questions. These are related guides, not a replacement for transaction-by-transaction review.
Monthly close checklist for foreign owners
- Collect invoices, contracts, payroll data, bank statements and expense evidence.
- Reconcile TRY and foreign-currency movements to the books and preserve exchange evidence.
- Identify related-party, cross-border and withholding-sensitive payments for review.
- Approve the proposed returns, file through the correct authorized channel and save receipts.
- Record exceptions, upcoming deadlines and the person responsible for remediation.
FAQ: does foreign ownership change the accounting calendar?
Foreign ownership does not create a separate ordinary filing calendar. It can, however, increase the need for clean ownership records, treaty analysis, bank evidence and cross-border payment documentation. Obtain case-specific advice before paying dividends, fees, royalties or interest abroad.
Primary sources, accessed 11 August 2026: GİB Tax Calendar and GİB Corporate Tax Return Guide, March 2026. This is general operational information, not tax advice.
