Compliance - ONESOURCE Indirect Tax Determination - IDT

Technical and Functional Enhancements - Legal Update - Tax Reform

Q1/2026
CBS and IBS

- New Element: cClasstrib

- Content: Rules and rates with cClasstrib (2026)

- Content: Rules and rates with cClasstrib (For 2027, adjusting tax rates)

Q2/2026
Selective Tax

- Outbound XML Tags: Effective rate, rate reduction, total tax amount, and total reduced tax amount.

- New calculation method.

- Authority

- Content: Rules and rates (Part 1 of 3). (Pending publication of the legislation)

Q3/2026
Selective Tax

- Content: Rules and rates (Part 2 of 3). (Pending publication of the legislation)

CBS and IBS

- New calculation method including the Selective Tax (IS) in the tax base.

- Content: Rules with the new calculation method.

ISS and ICMS

- New calculation method including IBS/CBS/IS in the tax base.

- Content: Rules with the new calculation method (Part 1 of 2).

Operations

- Support for loan for use, transfers, triangular operations, and future delivery [estimated delivery: Sep/2026]

- Addition of new Cclasstribs [estimated delivery: Sep/2026]

IBS-City

- New municipal authorities for the ZFM and ALCs [estimated delivery: Sep/2026]

ISS

- Inclusion of the new taxes in the tax base for ISS and withheld ISS [estimated delivery: Sep/2026]

ICMS

- Inclusion of the new taxes in the tax base [estimated delivery: Sep/2026]

CBS/IBS

- Inclusion of the Selective Tax in the tax base [estimated delivery: Sep/2026]

Q4/2026
Selective Tax

- Content: Rules and rates (Part 3 of 3). (Pending publication of the legislation)

IPI

- New calculation method including IBS/CBS/IS in the tax base.

- Content: Rules with the new calculation method (Part 1 of 2). (Pending publication of the legislation)

ISS and ICMS

- Content: Rules with the new calculation method (Part 2 of 3).

IBS-City

- Creation of rules for municipalities of the ZFM and ALCs. [estimated delivery: Nov/2026]

Selective Tax

- Creation of rules and rates (services) [estimated delivery: Oct/2026]*

- Creation of rules and rates (products and services), part 1 of 2 [estimated delivery: Nov/2026]*

- Creation of rules and rates (products and services), part 2 of 2 [estimated delivery: Dec/2026]*

IPI

- Creation of rules and rates, part 1 of 3 [estimated delivery: Oct/2026]*

- Creation of rules and rates, part 2 of 3 [estimated delivery: Nov/2026]*

- Creation of rules and rates, part 3 of 3 [estimated delivery: Dec/2026]*

CBS

- 2027 Rate, part 1 of 2 [estimated delivery: Nov/2026]*

- 2027 Rate, part 2 of 2 [estimated delivery: Dec/2026]*

*The timeline is subject to the publication of the applicable legislation.