Compliance
Understanding the 2026 Compliance Shifts: Brazil’s National Tax Compliance Program
Brazil’s Receita Federal and CGIBS have launched the Programa Nacional de Conformidade Tributária, guiding taxpayers through new fiscal requirements under the Reforma Tributária do Consumo.
By NomadicTax Research Team • 6 min read • August 24, 2026
## What is the Programa Nacional de Conformidade Tributária?
On **August 12, 2026**, the Receita Federal (RFB) and the Comitê Gestor do IBS (CGIBS) ratified the **Ato Conjunto RFB/CGIBS nº 5**. This regulation establishes the **National Tax Compliance Program for 2026**, designed to support taxpayers during the transition to the new fiscal regime introduced by the Reforma Tributária do Consumo.([gov.br](https://www.gov.br/fazenda/pt-br/assuntos/noticias/2026/agosto/receita-federal-e-cgibs-regulamentam-programa-nacional-de-conformidade-tributaria-para-apoiar-adaptacao-a-reforma-tributaria-no-ano-de-2026?utm_source=openai))
Instead of penalizing form-based errors immediately, this program emphasizes **orientation, continuous monitoring, and early correction** of inconsistencies in fiscal documents. The aim is to “get things right from the start.”([gov.br](https://www.gov.br/fazenda/pt-br/assuntos/noticias/2026/agosto/receita-federal-e-cgibs-regulamentam-programa-nacional-de-conformidade-tributaria-para-apoiar-adaptacao-a-reforma-tributaria-no-ano-de-2026?utm_source=openai))
## Key Changes and Their Implications
| Change | Prior System | New Focus Under the Program |
|--------|---------------|------------------------------|
| **Penalties and Enforcement** | Strict scrutiny from Day One | More guidance and opportunities for correction during the transition phase |
| **Emission of Fiscal Documents** | Existing requirements with risk of rejection for format errors | Clarification and delay in rejecting documents that omit CBS/IBS fields (first few months)([gov.br](https://www.gov.br/fazenda/pt-br/assuntos/noticias/2026/agosto/receita-federal-e-cgibs-flexibilizarao-obrigatoriedade-de-informacoes-em-documentos-fiscais?utm_source=openai)) |
| **Scope of Obligations** | VAT/PIS/Cofins, ICMS, ISS under older rules | Now moving toward full implementation of CBS and IBS across regimes, including Simples Nacional for many businesses([gov.br](https://www.gov.br/fazenda/pt-br/assuntos/noticias/2026/agosto/cgsn-atualiza-regras-do-simples-nacional-para-adequacao-a-reforma-tributaria-do-consumo?utm_source=openai))|
## What Entities Need to Know Now
- **All taxpayers issuing fiscal documents** (NF-e, NFC-e, CT-e, etc.): fields for CBS/IBS may be optional initially; missing fields **won’t** trigger rejection in the early stage.([gov.br](https://www.gov.br/fazenda/pt-br/assuntos/noticias/2026/agosto/receita-federal-e-cgibs-flexibilizarao-obrigatoriedade-de-informacoes-em-documentos-fiscais?utm_source=openai))
- **Simples Nacional optantes**: new rules to integrate CBS and IBS into this regime. Option periods and deadlines revamped for the first and second semesters of 2027.([gov.br](https://www.gov.br/fazenda/pt-br/assuntos/noticias/2026/agosto/cgsn-atualiza-regras-do-simples-nacional-para-adequacao-a-reforma-tributaria-do-consumo?utm_source=openai))
- **Importers using Duimp**: updated classification codes (CST, cClassTrib) and new summary tabs for tax calculations will be introduced Sept 27, 2026.([gov.br](https://www.gov.br/receitafederal/pt-br/assuntos/aduana-e-comercio-exterior/manuais/despacho-de-importacao/sistemas/duimp/rtc/reforma-tributaria-do-consumo?utm_source=openai))
## Practical Steps for Compliance
1. **Review and update fiscal software** to include CBS/IBS fields, but anticipate transitional flexibility in terms of rejection.
2. **Train accounting and billing staff** on new requirements — including which fields are required now vs. soon.
3. **Plan regime-options** under Simples Nacional. Deciding whether to remain in, opt out, or choose regular regime with CBS/IBS for 2027 can affect costs and compliance.
4. **Monitor all government bulletins**: several Ato Conjunto and CGSN resolutions have staggered effective dates, so missing a deadline could lead to missed compliance windows.
## Example Scenario
A small retailer under Simples Nacional with annual revenue just under the sublimite (new term in regulation). Under the old PIS/Cofins regime, certain documents needed only standard fields. Now the business must ensure its system can include CBS/IBS data **by September** to avoid missing deadlines. Although early missing data may not lead to rejections, failing to adapt may incur penalties or inconsistent filings in 2027 when these rules become mandatory.
**Bottom line**: Brazil’s tax compliance environment is in a pivotal transition. Entities should proactively upgrade systems, secure expertise, and stay alert to avoid surprises.