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May 28, 2026
MeF 1120/1120-F/1120-H/1120-L/1120-PC, 1120-REIT/1120-RIC/1120-S stakeholders:
We are providing tax year 2026 Extensible Markup Language (XML) schemas and business rules for the following forms that include new tax year form(s) and tax law changes.
Included in the 2026v1.0 schema package are updated files which identify the difference between the 2026v1.0 schema package and the 2025v6.2 schema package. The XML standardization was applied and are available for program planning purposes. These schemas and business rules will not be used in ATS or Production.
TY2026
- Business rules
- Schemas
From 1120 schemas and business rules are now distributed through the Registered User Portal and your e-Services mailbox. This mailbox is part of the Secure Object Repository (SOR). Users will access their mailbox in their existing e-Services account to pick up the schema and business rules packages.
Business rules are posted in two different formats which contain identical information – Adobe (PDF) and a Microsoft Excel (xlsx). A column within the file identifies changes made from the previous version.
If you have any questions about the schemas or business rules, please send your inquiry to the MeF mailbox.