Brazil's tax reform pressures businesses with split‑payment and new IBS/CBS rules

The reform of Brazil’s tax system introduces a split‑payment mechanism that obliges financial institutions to retain newly created taxes – the Contribuição sobre Bens e Serviços (CBS) and the Imposto sobre Bens e Serviços (IBS) – at the moment of each transaction. Analysts warn that this will tighten cash flow for digital‑product platforms, affiliate marketers and retailers that rely on rapid revenue recycling, because the retained amount cannot be used to fund ongoing campaigns until the tax credit is released.

From January 2026 the IBS and CBS will gradually replace PIS, Cofins, ICMS, ISS and IPI. Companies must update invoicing software, add IBS/CBS fields to electronic documents and adapt credit‑management processes. The change is especially acute for service firms, which have limited ability to generate credits, and for small‑to‑medium retailers that may need bank financing to bridge the new cash‑outlay.

State legislatures are acting to prevent “tax‑on‑tax” effects. Paraná’s bill seeks to exclude the new federal taxes from the ICMS calculation base, while Minas Gerais lawmakers are amending cultural‑incentive rules so that credit‑allocation continues after the ICMS is phased out. A federal constitutional amendment (PEC 13/26) also proposes IBS‑based credits for cultural and sport sponsorships.

The Simples Nacional regime will offer a hybrid option in 2027, allowing micro‑businesses to keep the simplified payment structure for most taxes while choosing a separate IBS/CBS accounting method. Together, these measures demand early system upgrades, staff training and strategic tax‑planning to avoid liquidity strains.