Does IPTU property tax debt expire? How long it takes and how to claim it

Yes, IPTU (the Brazilian municipal property tax) debt is subject to a statute of limitations. Under Brazilian law, the city government has 5 years to collect IPTU in court, counted from the day after the due date of each unpaid installment (Brazilian National Tax Code, art. 174, and STJ, Theme 980). If this period has passed without the collection being made in the way the law requires, the debt ceases to exist. But be careful: some acts restart the count from zero, including your own acts, such as agreeing to pay the debt in installments.

How the period is counted

IPTU is assessed when the city government sends the tax bill (carnê) to the address of the property or of the owner (STJ, Summary 397; the STJ is Brazil’s Superior Court of Justice).
The 5-year period starts on the day after the due date shown on the tax bill (STJ, Theme 980).
Each year of IPTU has its own period. The same property can have years already barred and years that can still be collected.

What interrupts the period

When the period is interrupted, the 5-year count starts over. The cases set out in the law (Brazilian National Tax Code, art. 174, sole paragraph):

The judge’s order to serve you in the tax enforcement proceeding (execução fiscal).
The protest of the debt at a notary’s office.
Any act in which you acknowledge the debt, such as asking for an installment plan or signing a debt confession.

So, before agreeing to an installment plan for a very old IPTU debt, it is worth checking whether it is already barred. An installment plan can bring back to life a debt that had already lapsed.

Statute of limitations during the lawsuit

Even after the city government files the tax enforcement proceeding, the debt can become barred. If the lawsuit stalls because the debtor or their assets cannot be found, it is suspended for 1 year and, after that, a new 5-year period starts to run. If nothing useful happens in that time, the debt becomes barred within the lawsuit itself, which is called prescrição intercorrente (statute of limitations during the lawsuit; Brazilian Law 6.830/1980, art. 40, and STJ, Theme 566).

IPTU tax enforcement proceedings that have been idle for many years are common. It is worth checking the progress of the lawsuit before paying.

Can I lose my property over IPTU debt?

Yes. A family home is usually protected against seizure, but this protection does not apply to the IPTU of that same property (Brazilian Law 8.009/1990, art. 3, IV). In an IPTU tax enforcement proceeding, the property can be seized (penhora) and go to auction. That is why checking the statute of limitations and the amounts charged makes a difference before the lawsuit reaches that point.

How to ask for the statute of limitations to be recognized

It depends on where the debt is:

Only in the city government’s register of overdue debts (dívida ativa), with no lawsuit: the request can be made to the city government itself, through an administrative proceeding, and, if denied, in court.
Already in a tax enforcement proceeding: the statute of limitations can be raised in the lawsuit itself, including through a request called exceção de pré-executividade, which does not require offering an asset as a guarantee. See how defense in enforcement proceedings and auctions works.

What to do now

Ask the city government for a statement of the property’s debt, with the years charged and the due dates.
Check whether there is a tax enforcement proceeding in your name and what stage it is at.
Do not agree to an installment plan or sign a debt confession before checking the statute of limitations.
Check, year by year, what can still be collected: the limitation period runs separately for each tax year.

The conclusion depends on the dates of each IPTU year and on what happened in the lawsuit. With the documents in hand, the review is objective.

Sources

This text is for information only and does not replace a lawyer's review of your case. The rules cited are Brazilian law as of the article's last update.