ONESOURCE Indirect Tax Determination - IDT

Technical and Functional Enhancements - Legal Update - Tax Reform
CBS and IBS
New Element: cClasstrib
Content: Rules and rates with cClasstrib (2026)
Content: Rules and rates with cClasstrib (For 2027, adjusting tax rates)
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)
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).
Sep
Operations
Support for loan for use, transfers, triangular operations, and future delivery
Addition of new Cclasstribs
IBS-City
New municipal authorities for the ZFM and ALCs
ISS
Inclusion of the new taxes in the tax base for ISS and withheld ISS
ICMS
Inclusion of the new taxes in the tax base
CBS/IBS
Inclusion of the Selective Tax in the tax base
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).
Oct
Selective Tax
Creation of rules and rates (services)*
IPI
Creation of rules and rates, part 1 of 3*
Nov
IBS-City
Creation of rules for municipalities of the ZFM and ALCs.
Selective Tax
Creation of rules and rates (products and services), part 1 of 2*
IPI
Creation of rules and rates, part 2 of 3*
CBS
2027 Rate, part 1 of 2*
Dec
Selective Tax
Creation of rules and rates (products and services), part 2 of 2*
IPI
Creation of rules and rates, part 3 of 3*
CBS
2027 Rate, part 2 of 2*
*The timeline is subject to the publication of the applicable legislation.