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Case Study: Using Simples Nacional Hybrid Option to Optimize Tax Burden

A step-by-step look at how a small business could use the ‘hybrid’ Simples Nacional model before full CBS/IBS integration to moderate tax burden and compliance costs.

By NomadicTax Research Team · 5-8 min read

Setting the Scene: Meet Empório Verde

Empório Verde is a small health‐food retailer that qualifies as Empresa de Pequeno Porte (EPP). Under the current Simples Nacional regime, its monthly tax obligations are consolidated via DAS, a simplified tax payment system that includes multiple levies in one.

Hybrid Option: What It Is and Why It Matters

Starting 2027, some Simples Nacional optantes may choose a hybrid model, where they remain in Simples for many obligations but pay the CBS and IBS outside the DAS, under regular regime rules (gov.br). The hybrid route may be attractive if Empório Verde’s CBS/IBS portion under Simples is high or if billing mix favours more indirect consumption taxes.

Step-by-Step Comparison

ScenarioSimples Full IntegrationHybrid Option
Annual RevenueR$ 2 millionR$ 2 million
CBS/IBS baseSmall share of turnover under Simples rateUnder hybrid, business calculates CBS + IBS explicitly; may benefit from credits under IBS on inputs
Compliance burdenSimpler, fewer entries; all taxes in one DAS paymentSeparate filings, different systems; higher complexity but potential tax savings
Cash flow impactPredictable, consolidated costsMore volatile; need to separate payments but possibility to reduce net burden via credits

Empório Verde’s Decision Flow

  1. Estimate CBS/IBS tax burden under full Simples: calculate tax rate within Simples that includes CBS/IBS on expected transactions.
  2. Estimate taxes under regular CBS/IBS regime (outside Simples) plus other applicable taxes.
  3. Compare net of compliance costs (software, accountant fees, adjusted invoice issuance).
  4. If hybrid option gives net savings > incremental cost, exercise option during 1-30 September 2026 for effect in 2027 (gov.br).

Lessons from Empório Verde

  • Hybrid approach can reduce tax burden for companies with significant CBS/IBS exposure.
  • Proper record-keeping and software compatibility critical.
  • There is risk: misclassification, errors in document emission, or failure to include CBS/IBS highlights could trigger penalties once full enforcement begins.

Actionable Takeaways If You’re Similar

  • Do the financial modelling now.
  • Ensure you are ready with document issuance tools and know when your version of NFS-e national must be used.
  • Track regulatory updates: leiautes técnicos may change.
  • Consult with a aviso fiscal or empresa de contabilidade to verify how these options work in your state or municipality (because ISS or ICMS leg-reg may also impact effective tax).

Sources

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