Federal Revenue Service denies that it will notify adults who live with their parents

The Federal Revenue Service released an official statement to deny that it will notify adults who live with their parents from January 2026, classifying the information, which has been circulating on social media since Sunday (21), as "fake news, apparently driven by politicians who oppose the government".

"The lie tries to relate this, in a confusing way, to rent payments or something along those lines," the statement said. "This doesn't exist, nor does it make any sense," the agency declared, adding a warning to be wary of "anyone who lies to you without any basis or apparent reason, other than to instill fear and misinformation."

One of the publications that released the information denied by the IRS said that the agency would start using "artificial intelligence to cross-reference data from the National Registry of Rural and Urban Properties (Cinter) and the Brazilian Real Estate Registry (CIB)".

The goal would be to identify "both landlords who fail to declare rent receipts and tenants who fail to report the expense on their income tax return," which would include adults who live with their parents. The article was updated after the tax agency's denial.

The outlet also cited Article 975 of Decree 9,580/2018 , which regulates income tax on income of any nature. The provision establishes that individuals must annually declare to the IRS the income they paid in the previous year, indicating the name, address, and CPF or CNPJ of the recipients, under penalty of a fine of 20 percent of the undeclared amount.

There is no database in Brazil called "National Registry of Rural and Urban Properties" or with the acronym "Cinter".

The closest to the nomenclature is the National Rural Property Registry (CFIR), which integrates data from the National Rural Registry System (SNCR), the National Institute of Colonization and Agrarian Reform (Incra), and the Rural Property Registry (Cafir), administered by the IRS with information on rural properties, their owners and, if applicable, co-owners and co-owners.

Revenue created the CIB, "CPF of real estate"

The rumor arose following a normative instruction from the IRS ( 2,275/2025 ), signed by Secretary Robinson Barreirinhas on August 15 and published in the Official Gazette of the Union last Thursday (18). The text, however, makes no mention of adults who live with their parents or the relationship between tenants and lessees.

The rule regulates the mandatory participation of notary offices in the National Territorial Information Management System (Sinter) and establishes the Brazilian Real Estate Registry (CIB) as the unique identifier of properties throughout the country, as a kind of "CPF for properties" .

The measure is provided for in Complementary Law 214/2025 , one of those that regulates tax reform, and aims to standardize real estate registries and integrate databases of the Union, states and municipalities for the management of tax and real estate policy.

Upon publication of the rule, notary offices and public records must electronically send to the Federal Revenue Service, through Sinter, data related to real estate transactions, changes in the characterization of real estate, in addition to information necessary to define reference values.

A technical note produced by the National Confederation of Municipalities (CNM) states that the integration of Sinter and CIB will increase fiscal transparency, enabling municipalities to consolidate their territorial and economic bases, "directly contributing to the correct identification of taxpayers, property delimitation, reduction of fraud and improvement of collection and the strengthening of shared oversight between federative entities."

When does the "CPF for real estate" start?

According to the implementation schedule for the new real estate registration model, as of January 1, 2026, federal agencies, notary offices, state capitals and the Federal District must have signed an agreement with the IRS, made information available on Sinter and included CIB information in their systems.

State agencies and other municipalities have until January 1, 2027 to comply with the same obligations.

Within the same deadlines, federative entities must disclose the reference value of properties in Sinter, estimated for all real estate assets that are part of the CIB and updated annually.

"This reference value will be used in the calculation of the IBS [Tax on Goods and Services] for transactions involving real estate, which demonstrates its relevance for the municipality's revenue," says the CNM technical note.