CBS: What the Contribution on Goods and Services Is and How It Replaces PIS/Cofins
Understand what CBS is, how it replaces PIS and Cofins, how non-cumulative crediting works, and see practical calculation examples.
Executive Summary
CBS (Contribuição sobre Bens e Serviços — Contribution on Goods and Services) is the new federal tax that replaces PIS and Cofins starting in 2026, consolidating two social contributions into a single non-cumulative levy. For accountants, mastering CBS is essential because it represents the biggest change to the federal contribution landscape since the creation of Lucro Real (actual-profit regime). This guide explains what CBS is, how it works, how it replaces PIS/Cofins, and presents practical crediting calculation examples that can be applied immediately in professional practice.
What Is CBS?
CBS — Contribution on Goods and Services — is a non-cumulative federal social contribution that replaces PIS and Cofins once LC 214/2025 takes effect. The creation of CBS represents the unification of two separate contributions into a single tax with VAT logic: it applies to the value added at each transaction and allows full crediting of amounts paid on prior acquisitions.
Core Features of CBS
CBS inherits the social-contribution nature of the former Cofins, retaining the constitutional earmarking that funds Social Security. However, it abandons the logic of taxing gross revenue in favor of taxing added value.
How CBS Replaces PIS and Cofins
What It Was: Two Different Taxes
PIS and Cofins had different structures, different regimes, and different tax bases:
PIS:
- Cumulative regime (Lucro Presumido — presumed-profit regime): rate of 0.65% on gross revenue, no crediting
- Non-cumulative regime (Lucro Real — actual-profit regime): rate of 1.65% on gross revenue, with limited crediting of inputs
- Restricted credits: no credit on all inputs, labor, or energy
Cofins:
- Cumulative regime (Lucro Presumido — presumed-profit regime): rate of 3% on gross revenue, no crediting
- Non-cumulative regime (Lucro Real — actual-profit regime): rate of 7.6% on gross revenue, with limited crediting
- Restricted credits: even in the non-cumulative regime, the lists of allowable credits were limited
The combination of non-cumulative PIS + Cofins produced a total burden of 9.25% on revenue (1.65% + 7.6%), but with restrictive crediting lists that made the effective burden higher.
What Stays: A Unified CBS
CBS consolidates the two contributions into one:
- Reference rate: defined by legislation and by the applicable transition stage
- Full crediting: all inputs generate credit, with no restrictive list
- Automatic split payment: credit recorded at the moment of the transaction
In the examples in this guide, 8.8% is used only as an illustrative reference to demonstrate how the credit mechanism works.
CBS Crediting Mechanism
How the Credit Works
Under the CBS system, each company can credit the CBS amount paid on all acquisitions of goods and services used in its activity. The credit is calculated on the value of each acquisition, multiplied by the CBS rate.
Example: Technology Company (Service Provider)
The company provides software development services and has the following operating costs:
- Hiring developers (salary + charges): R$ 80,000/month
- Software licenses and tools: R$ 15,000/month
- Cloud hosting and infrastructure: R$ 10,000/month
- Energy and utilities: R$ 2,000/month
- Other miscellaneous inputs: R$ 3,000/month
Total inputs: R$ 110,000
CBS on inputs (creditable):
- R$ 110,000 × 8.8% = R$ 9,680 in CBS credits
Monthly revenue from services: R$ 200,000 Value added = R$ 200,000 - R$ 110,000 = R$ 90,000
CBS on value added = R$ 90,000 × 8.8% = R$ 7,920
CBS payable = CBS on value added - CBS credited = R$ 7,920 - R$ 9,680 = R$ 0 (credit balance of R$ 1,760)
This is an illustrative example to show the assessment logic; in practice, the rate and the credits depend on the transaction and on the regulations in force.
Difference from the Current System
Under the current system (Lucro Real, non-cumulative):
- PIS + Cofins on revenue = R$ 200,000 × 9.25% = R$ 18,500
- Limited credits: PIS/Cofins on inputs admit only specific items
- Credit on personnel expenses: NOT creditable
- Credit on some services: partially creditable
Result: the company pays PIS/Cofins on amounts it cannot credit, generating cumulativeness.
Under the CBS system, the credit on inputs and services tied to the economic activity follows broader rules, reducing the cumulativeness of the previous model.
CBS and Split Payment
Split payment is the mechanism that operationalizes CBS crediting in day-to-day commercial transactions.
Split Payment Flow
- Company A sells a product/service to Company B for R$ 10,000
- At the moment of the transaction:
- Company A receives R$ 10,000 - CBS (the split-payment portion) as the net amount
- CBS = R$ 10,000 × 8.8% = R$ 880 → amount segregated between remittance to the RFB and credit for Company B
- Company B records a CBS credit of R$ 880 automatically in the system
- When Company B sells to Company C or to the final consumer:
- CBS due = sale value × 8.8%
- The prior credit can be used to offset
Advantages of Split Payment
- Automatic credit: no declaration process is needed to claim the credit — it becomes available immediately
- Reduced litigation: credits documented at the moment of the transaction are harder to challenge
- Transparency: the entire chain is documented, making audits easier
CBS vs PIS/Cofins: Detailed Comparison
Sectors with Special Treatment
LC 214/2025 provides for sectors with differentiated rates or special crediting mechanisms:
Healthcare
Medicines and health services will have reduced or zero rates, with full crediting for inputs used in the production of medicines. Hospital services receive favorable treatment.
Education
Educational services have a reduced rate, with the goal of preserving access to education.
Construction
Real-estate developments have an interoperable credit regime — CBS credits can be used across different units of the same project, making credit management easier in long-term projects.
Medicines
Reduced or zero rates for essential medicines, with cashback for the final consumer.
CBS Ancillary Obligations
Who Must Declare
All legal entities subject to CBS must:
- Register under the regime: companies already enrolled with a CNPJ (company tax ID) will be automatically enabled for CBS, with possible need for registration updates
- Declare transactions: specific ancillary obligations will be detailed in RFB regulations
- Separate credits by transaction: split payment makes this easier, but companies need integrated systems
Tax Documents
CBS will be documented through an integrated RFB system, whose regulations will detail the layout, mandatory fields, and integration with the other tax modules.
Complete Practical Example: A Tax Consulting Firm
Let’s follow a tax consulting firm with mixed operations.
Company Data
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Monthly revenue: R$ 150,000 (consulting)
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Input costs:
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Software and tools: R$ 5,000
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Third parties (partner lawyers): R$ 40,000
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Infrastructure (virtual office, telecom): R$ 8,000
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Office supplies: R$ 2,000
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Total inputs: R$ 55,000
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Value added: R$ 95,000
CBS Calculation
CBS on value added:
- R$ 95,000 × 8.8% = R$ 8,360
Creditable CBS on inputs:
- R$ 55,000 × 8.8% = R$ 4,840
CBS payable:
- R$ 8,360 - R$ 4,840 = R$ 3,520
Effective rate on revenue: 2.35% (R$ 3,520 / R$ 150,000)
Effective rate on value added: 3.7% (R$ 3,520 / R$ 95,000)
Compared with cumulative PIS+Cofins (9.25% on revenue = R$ 13,875), CBS produces savings even in the example with limited crediting.
Here too, the figures serve only as a flow simulation and must be recalculated according to the rate applicable to each specific case.
Impacts for Accountants: What Changes in Daily Practice
Before: Complex Credit Assessment
Under the current non-cumulative PIS/Cofins system, assessing credits requires:
- Detailed analysis of each cost item to identify whether a credit right exists
- Apportionment of credits when there are transactions with different treatments
- Filling out specific breakdowns in the applicable ancillary obligations
After: Split Payment Simplifies
With split payment, credits are recorded automatically at each transaction. Accounting needs to:
- Correctly record split-payment amounts
- Use available credits to offset the CBS due
- Track the fluctuating credit balance
Want to understand how CBS specifically affects the cost structure of your company or your clients? In /napratica, VMAHUB publishes practical analyses to help accountants navigate the tax transition. For a personalized analysis of your case, talk to our team: [email protected]
Read also:
- Difference Between CBS and IBS
- IBS: What It Is and How It Replaces ICMS and ISS
- Split Payment: What It Is and How It Works
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