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New Inmetro Rule Transfers to Manufacturers the Responsibility for Initial Compliance of Measurement Instruments. Inspection Will Continue to Be Used, and the Change Aims to Reduce Costs and Align Brazil to International Standards.
Starting from January 1, 2026, the Initial Verification carried out by the government before the commercialization of measurement instruments will be replaced by the Declaration of Compliance issued by manufacturers and importers previously authorized.
The change is in Ordinance No. 657, of October 8, 2025, and it maintains Inmetro’s field inspection through the Brazilian Network of Legal Metrology and Quality.
The stated goal is to bring agility to the sector, reduce costs, and align the country with international practices without giving up control.
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What Changes in Practice
With the new model, Inmetro will cease to perform the state stage of Initial Verification before sale and will begin to recognize the declaration from the manufacturer/importer itself, as long as it is authorized and under continuous supervision.
The direct responsibility for technical compliance will be concentrated in the companies, which must ensure that each instrument meets metrological and legal requirements at the moment it enters the market.
The role of Inmetro and delegated bodies remains in inspection, supervision, and verifications in use, even after repairs.
Deadlines and Requirements for the Sector
Companies that do not yet have authorization to issue the Declaration of Compliance need to submit the request by November 30, 2025, referencing Ordinance No. 295/2021.
Authorizations already granted remain valid during the transition period.
Inmetro states that it will publish additional guidelines by the end of 2025 and will promote clarification rounds with the productive sector to detail procedures.
Which Instruments Are Covered
The measure reaches new measurement instruments, manufactured in the country or imported, that are subject to metrological regulation.
These include liquid fuel dispensers, electricity meters, water and gas meters, weighing instruments, taximeters, and blood pressure meters.
The new flow applies to the initial commercial release of these equipment; once put into use, the established control routines continue.
Inspection Continues with a Focus on Use
Despite the change of stage before sale, the institute emphasizes that the obligation of periodic verifications and after repairs remains to ensure the reliability of measurements throughout the instruments’ lifespan.
The execution, as it is today, continues through the RBMLQ-I, a national network that performs legal metrology actions in the states.
This arrangement aims to maintain the traceability and technical safety of measurements while accelerating the entry of products into the market.
Why the Change
According to Inmetro, the change breaks a model that has been in place for over four decades and aims to simplify bureaucratic stages without reducing the demand for compliance.
The agency claims that the design is in line with international references used by OECD member countries and tends to balance production speed, technical safety, and public credibility.
Among the expected benefits are the reduction of deadlines and operational costs and a more equitable competitive environment.
What Does Inmetro Say
In an official statement, the director of Legal Metrology, Marcelo Morais, states that the institute is transitioning to a “more dynamic model, based on trust and accountability of companies”.
For him, the Declaration of Compliance “speeds up the production process, without sacrificing safety and credibility of measurements”.
The leader adds that the replacement of the verification prior to commercial release aims to eliminate unnecessary barriers and expedite the entry of new instruments while maintaining traceability.
Repercussions for Fuel Dispensers and Other Regulated Sectors
In the case of fuel dispensers, the change means that initial compliance will be certified by the authorized manufacturer, and no longer verified by the state before sale.
Once installed, however, periodic verifications in use remain mandatory, conducted by the delegated network bodies, as is already the case in routine inspections at gas stations.
In sectors such as commercial weighing, electricity, water, and gas, the logic will be the same: the entry point will be the supplier’s declaration, and the government will reinforce surveillance under real operating conditions.
How Companies Should Prepare
To issue the declaration, companies must be formally authorized and meet the requirements set out in the applicable regulation.
Those who do not yet have this authorization must submit the application by 11/30/2025, based on Ordinance No. 295/2021.
Inmetro indicates that it will detail procedures and deadlines in additional guidelines to be published by the end of 2025, including clarification meetings.
Meanwhile, already issued authorizations remain valid, ensuring continuity for the market during the transition.
Consumer Safety and Credibility of Measurements
The agency maintains that the transition to the Declaration of Compliance does not reduce consumer protection, as it maintains the police power and periodic verifications.
With primary responsibility shifted to those who manufacture or import, the expectation is that field monitoring and metrological traceability will become the main mechanisms of public trust, with penalties in case of non-compliance.
With initial responsibility in the hands of the manufacturer, but active inspection in use, the new arrangement is expected to change the routine of companies and delegated bodies.
For consumers and retailers, it remains to be seen if field control will be sufficient to curb fraud and ensure accurate measurements in daily life.
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