The late payment surcharge applies under Law No. 6183 on the Collection Procedure of Public Receivables; its rate is set by Presidential Decree. Default interest and the voluntary disclosure surcharge are applied at the same rate.
Source: Law No. 6183 Art. 51
Related toolRun the calculation nowRelated terms
Default interestInterest applied to taxes assessed as a result of a tax inspection, from the date on which they would have been payable had they been assessed on time.Voluntary disclosureA mechanism under which no tax loss penalty is imposed if the taxpayer voluntarily corrects an incomplete or incorrect return before the tax administration discovers it.Advance taxTax paid in advance during the year by income and corporate taxpayers, in quarterly periods, on current-period earnings.Arm's length principleThe principle that transactions between related persons should be carried out at the prices and on the terms that would apply between independent parties with no such relationship.Capital gainGains of individuals from disposing of certain assets and rights that are subject to income tax.Certified public accountant (SMMM)A professional authorised to keep taxpayers' books, prepare their financial statements and advise on accounting and tax matters.
Last updated: October 22, 2026 · This definition is for general information only.