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InsightsTax & FinanceAugust 25, 2026

Presumptive credits: the blind spot of the tax transition

Where retailers are leaving legitimate credits on the table during the IBS/CBS transition — and how to organize the capture.

In the race to adapt systems and rates to the new taxation, one topic goes unnoticed in many operations: the presumptive credits and special regimes that survive the transition — and that are worth real money.

The problem is rarely ignorance of the rule. It is operational: the credit depends on data born at different ends — inbound invoice, product registration, supplier regime, tax bookkeeping — and any break in that chain turns legitimate credit into cost.

Three fronts separate those who capture from those who lose. The first is registration: consistent tax classification of item and supplier, reviewed before the changeover, not after the audit. The second is bookkeeping: processes that verify the credit at entry, with an audit trail, rather than in amendments months later. The third is governance: a clear owner for the topic, with visibility of how much credit was identified, used and lost.

The right technology makes a difference here — not through sophistication, but through consistency. Parameterized rules, integration between ERP and bookkeeping, and exception reports turn credit from a sporadic event into a routine.

In the tax transition, margin is not defended only in price. It is also defended in the credit the operation fails — or manages — to capture every day.

How BRX can help

BRX supports retailers in the practical reading of the transition: we simulate the presumed-credit impact by category and supplier, review purchasing and pricing strategies, and prepare tax systems for each stage of the schedule.

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