Tax Reform 2027: Where the Real Margin Gains and Losses Lie Under CBS
Tax Reform 2027: Where the Real Margin Gains and Losses Lie Under CBS
Bruno Menezes – Partner at Infis
The discussion around the 2027 tax reform usually starts with the headline rate. But for most companies, this will not be the most important issue.
The introduction of the CBS (Contribution on Goods and Services), replacing PIS and COFINS under the new framework created by Constitutional Amendment 132 and regulated by Supplementary Law 214/2025, changes the logic of the analysis. The debate is no longer simply “how much did taxes increase or decrease,” but rather “who is able to turn this amount into credit, at what speed, and with what impact on pricing, margins, and cash flow.” The reform itself was designed under a dual VAT logic, based on non-cumulativity, destination-based taxation, and greater economic neutrality across the supply chain.
The starting economic assumption is therefore the following: in transactions between taxpayers that can fully utilize tax credits, pricing tends to shift toward net-of-tax values. In other words, an increase in gross outlay alone should not justify automatic price adjustments in B2B contracts, since the CBS amount is, in principle, recoverable by the buyer. Today, prices in business transactions are generally negotiated on a gross basis, already including taxes (net price + ISS/ICMS + PIS/COFINS).
However, this assumption cannot be treated as an absolute rule.
There are at least five situations in which this neutrality may partially or fully fail:
Sales to final consumers, who do not recover tax credits.
Sales to companies that structurally accumulate credits, such as exporters.
Transactions with special or preferential tax treatments.
Timing mismatch between economic neutrality and cash neutrality.
Commercial renegotiations driven by perceived reform effects, even when economic impact is limited.
Another key point is timing. Although the focus is 2027, practical preparation has already begun. Official guidance for 2026 requires CBS and IBS to be highlighted in electronic invoices, along with system, layout, and compliance adjustments. The government treats 2026 as a testing year, with CBS at 0.9% and IBS at 0.1%, in a calibration environment. Companies that delay preparation until 2027 will be behind.
1. Companies under the Real Profit regime currently subject to non-cumulative PIS/COFINS
For these companies, the reform brings more operational and economic disruption than conceptual change.
The main challenge is not necessarily a loss, but the need to restructure compliance, systems, and accounting to properly capture credits. This is not only a tax issue, but also a systemic, contractual, and managerial one.
There is also a commercial challenge: many customers will assume margin gains and request price reductions based on this assumption, which is often overly simplistic. Any potential credit gain must be analyzed alongside cash flow, customer mix, supplier profile, non-creditable expenses, and possible credit accumulation.
A relevant loss is the erosion of an existing economic arbitrage between tax regimes. Today, suppliers under the presumed profit or cumulative regime embed a lower tax burden in pricing, while buyers under the non-cumulative regime may credit higher rates. This gap tends to disappear under CBS.
On the gain side, indirect expenses and previously non-creditable costs may become recoverable, improving accounting margins and DRE perception, even if short-term cash impact remains negative.
2. Companies under the Presumed Profit or other regimes subject to cumulative PIS/COFINS
For these companies, the reform represents a deeper structural shift.
The main challenge is operational maturity in credit management. Systems, supplier data, accounting classification, and tax mapping become significantly more relevant. In many cases, the risk lies less in legislation and more in execution capacity.
Commercial pressure will also be significant, as clients may assume new credit generation and attempt to capture this perceived benefit through price renegotiation.
The main downside is in B2C operations, where no credit exists for the customer, increasing direct pressure on pricing or margins. Companies in this segment will need to focus on efficiency gains, logistics, procurement, and commercial restructuring.
On the positive side, broader credit eligibility may convert previously embedded costs into recoverable amounts, improving economic margins over time.
3. The key distinction: margin vs. cash flow
CBS neutrality may exist economically but not financially. Companies may experience:
Higher upfront cash outflows
Timing delays in credit recovery
Structural credit accumulation
Greater working capital needs
Dependence on future refunds or offsets
Therefore, 2027 analysis cannot rely solely on tax rates. It must integrate tax, margin, cash flow, and negotiation dynamics.
4. Core pricing and renegotiation thesis
Between taxpayers with full credit recovery, pricing tends to remain net-of-tax. Outside this scenario, neutrality weakens and must be segmented by customer profile:
B2B with full credit recovery
B2B with limited credit efficiency
Exporters or credit accumulators
Retail clients
Final consumers
5. What companies should already be doing
Map value chains and supplier structures
Review contracts and pricing clauses
Prepare ERP, fiscal systems, and accounting flows for 2026 requirements
Build negotiation and defense models for pricing discussions
Conclusion
The 2027 tax reform is not only a fiscal event, but also a commercial, contractual, and financial transformation.
Some companies will lose existing arbitrage effects between regimes. Others will gain recoverable credits. Many will experience margin improvement alongside cash pressure. Almost all will face renegotiation pressure.
The decisive question is no longer “what is the new tax rate,” but rather: who can effectively transform CBS into usable credit, defensible pricing, and sustainable economic performance?
