What periods must a company retain, and why do the tax reassessment deadlines almost always exceed the broadest intuition.
A Tunisian company that methodically destroys its supporting documents after four years believes it has purged its tax risk. It is mistaken. Between the reassessment period fixed by the Tax Rights and Procedures Code, the retention obligation imposed by the Commercial Code, and the interruption mechanisms that audit practice systematically deploys, the actual duration during which a company must be able to produce its documents far exceeds the most widespread intuition.
In 2026, this question ceases to be theoretical. The widespread adoption of electronic invoicing and the tax amnesty enacted in the Finance Law redefine, in practice, the structure of the reassessment risk.
The Legal Basis: What Article 19 of the CDPF Provides
The right of the Tunisian tax administration to reassess follows a principle laid down in Article 19 of the Code of Tax Rights and Procedures (CDPF). In that respect, omissions, errors and concealments detected in the base, rates or the calculation of taxes declared can be repaired up to the end of the fourth year following the year in which the benefit, income, turnover, or operation giving rise to the tax liability was realized.
For a company subject to the real regime whose accounting year does not align with the calendar year, the same four-year period is calculated from the closing of the balance sheet. In the matter of registration duties, the rule differs slightly. Indeed, the period runs from the date of registration of the deed or declaration, and not from the year of the taxable event. This common-law period constitutes the baseline, but in practice it is only the floor of the risk, not its ceiling.
The Doubling of the Period
