Tax statute of limitations (collection) — 5 years to collect
The Brazilian tax statute of limitations on collection ("prescrição tributária") is the 5-year period within which the Public Treasury may judicially collect a definitively assessed tax credit. That term comes from Article 174 of the National Tax Code (Law 5,172/1966) and runs from definitive assessment: a final unappealable administrative decision or the lapse of the defense period. Once it elapses, the right to collect is extinguished. A brief for tax directors and counsel reviewing legacy debts.
Starting point and interruptions
The collection period starts from the DEFINITIVE ASSESSMENT of the tax credit:
- Ex officio assessment: 30 days after notification (if not challenged);
- Assessment with a challenge: the date of the final unappealable administrative decision;
- Self-declaration with non-payment (DCTF, GFIP returns): the due date of the declared and unpaid tax.
Grounds for INTERRUPTION (CTN Art. 174, sole paragraph):
- A judge's order directing service of process in a tax foreclosure;
- Judicial protest (where authorized by state law);
- An unequivocal judicial act placing the debtor in default;
- An unequivocal act by the debtor acknowledging the debt (an installment plan, a confession).
Intercurrent limitation — STJ Theme 1,184
The intercurrent statute of limitations ("prescrição intercorrente") occurs in the course of a tax foreclosure — when the proceeding stalls due to the Treasury's inaction. The STJ (Superior Court of Justice) set the binding thesis in Theme 1,184:
- After the foreclosure is suspended for 1 year (Art. 40 of Law 6,830/1980), the 5-year limitation period begins automatically;
- Once the period elapses, the intercurrent limitation must be recognized ex officio by the judge;
- The suspension must be notified to the Treasury — without notice, the period does not begin;
- An ineffective search for the debtor's assets does NOT interrupt the intercurrent limitation.
This thesis enabled the dismissal of thousands of stalled tax foreclosures — a strategic defense in old cases.
Frequently asked questions about the tax statute of limitations
Can a time-barred tax be collected again?
No. The statute of limitations extinguishes the tax credit (CTN Art. 156, V) — the Treasury permanently loses the right to collect. Any subsequent assessment or registration as overdue debt can be set aside through a writ of mandamus, a motion against the foreclosure, or an annulment action.
Does an installment plan interrupt the limitation period?
Yes. Joining an installment plan (REFIS, a tax settlement) is an "unequivocal act of debt acknowledgment" (CTN Art. 174, IV) — it interrupts the limitation period, which then restarts in full. For this reason, joining an installment plan for an already time-barred debt "revives" the credit in the Treasury's favor — caution is required.
Must the intercurrent limitation be raised by the debtor?
No — it can be recognized ex officio by the judge. In practice, however, it usually depends on the debtor prompting the judicial review through a motion against the foreclosure or a pre-foreclosure objection. A debtor's inaction can result in a foreclosure running for years without anyone noticing the limitation.
How do we identify potentially time-barred debts?
Through a technical review of the debt statement with the Treasury plus a chronology of procedural acts. For federal debts, consult the e-CAC and SIEFI systems; for state debts, the SEFAZ system; for municipal debts, the City Hall. An audit of old debts can free up significant cash through recognition of the statute of limitations.