The federal government will begin a phased roll‑out of the long-awaited tax overhaul with a test phase in January 2026, though businesses will not be required to remit the new unified levies until 2027. Lawmakers and tax authorities expect the gradual approach to reduce disruption while software and accounting systems adapt.
Brazil tax reform timeline and key taxes
The reform replaces multiple levies with two primary taxes. The Imposto sobre Bens e Serviços (IBS) will supplant state and municipal consumption taxes such as ICMS and ISS. The Contribuição sobre Bens e Serviços (CBS) will replace federal contributions PIS and Cofins. A new Selective Tax will also be levied on products deemed harmful to health or the environment, such as tobacco and certain alcoholic drinks.
Officials have introduced a phased calendar. During the 2026 testing year businesses must report values for IBS and CBS but will not be required to pay them, provided they meet reporting obligations. In 2026 nominal test rates will be low: 0.9% for CBS and 0.1% for IBS. From 2027 CBS payments will commence, with IBS payments also starting that year at a minimal effective rate split between states and municipalities. Higher IBS rates and the progressive reduction of ICMS and ISS collections will occur through 2032, with full extinction of those legacy taxes in 2033.
How payments and compliance will change
The reform introduces a split payment mechanism for electronic transactions such as Pix, TED and card payments. Taxes will be separated and routed to the treasury at the point of sale, limiting the opportunity for evasion because funds will not pass through sellers’ accounts. Credit rules are central to the redesign: businesses may claim credits for taxes effectively paid by suppliers but only if those suppliers have remitted the taxes to government. That requirement is intended to force greater self‑policing among firms and to reduce informal invoicing.
Winners, losers and municipal impacts
Outcomes will vary by business model. Companies that acquire many input goods that generate credits may face a lower effective tax burden than firms that provide services or sell final goods with few creditable inputs. Small firms in simplified regimes could lose competitive edge if they generate fewer credits than larger, formalised suppliers. The reform also reassigns tax destination: municipal receipts will increasingly reflect the location of consumption rather than company headquarters, shifting revenue streams for cities and regions.
Practical notes for businesses
Tax advisers say substantial uncertainty remains because several rates and implementing rules are still pending. The tax authority has indicated a six‑month window for error correction during the transition, shielding taxpayers from fines for honest mistakes as systems and interpretations settle. Accountants and IT teams will need to update billing and reporting platforms to handle the new fields and automated split payments.
Policymakers present the reform as a measure to simplify tax collection, reduce cumulatively and curb evasion rather than to lower overall tax pressure. As rules and rates are finalised over the next three years, companies and municipalities will need to monitor changes closely and plan for redistributive effects on revenue and competitiveness.
Key Takeaways:
- Brazil tax reform begins test phase in January 2026 with payment delayed until 2027.
- Two unified taxes created: IBS (replacing ICMS and ISS) and CBS (replacing PIS and Cofins); full transition completes by 2033.
- Split payment, credit rules and phased rates aim to reduce evasion but will reshuffle tax burdens across firms and municipalities.
- Selective tax on harmful goods and transitional leniency for compliance could blunt short-term disruption.
