Turkey’s tax inspections find 451.4 billion lira in base differences
Turkey’s Tax Inspection Board (VDK) put tax-base differences from inspections at 451.4 billion lira in the first nine months of 2026, up 102.24 per cent from a year earlier. Across inspection and monitoring programmes, base differences and reductions in declared losses totalled 636.9 billion lira. The figures describe changes to taxable bases and losses, rather than tax revenue collected.
Economics & Markets··Morning
Nine-month inspection differences rose 102.24 per cent
Turkey’s Tax Inspection Board (VDK), the body responsible for tax inspections, identified 451.4 billion lira in tax-base differences during the first nine months of 2026. The figure rose 102.24 per cent from a year earlier. Across its inspection and monitoring programmes, tax-base differences and reductions in declared losses totalled 636.9 billion lira. Those adjustments concern the amounts on which tax is calculated and declared losses, rather than revenue collected.[1], [2]
Inspectors examined 50,253 taxpayers
Inspectors examined 50,253 taxpayers and issued 151,883 reports. Proposed tax assessments rose 90.19 per cent and proposed penalties increased 80.89 per cent. The tax-risk response programme, which asks taxpayers to respond to identified tax risks, generated 49.1 billion lira of additional tax base and 4.58 billion lira of additional tax.[1]
High-income monitoring added 48.7 billion lira to bases
The second high-income monitoring and compliance programme covered 16,307 taxpayers’ declarations of 2025 earnings and generated 48.7 billion lira of additional tax base. About 7,000 participants had never filed returns in earlier periods; most filed for the first time following monitoring, the board said. Return monitoring increased tax bases by 22.4 billion lira and reduced declared losses by 23.3 billion lira. Physical inventory work covered 761 addresses in 36 provinces.[1]
