April 21, 2022 MeF 1120S stakeholders: We are providing tax year 2021 eXtensible Mark-up Language (XML) schemas and business rules for the following forms that include new tax year form(s) and tax law changes. Included in the 2021v4.3 schema package are "DIFF" files which identify the difference between the 2021v4.2 schema package and the 2021v4.1 schema package. The XML standardization was applied and are available for program planning purposes. These schemas and business rules will be used in ATS and production. TY2021 Current year schemas and business rules Form 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. Instructions for accessing the SOR mailbox For the 1120 XML schemas, the instance document contained in the schema files is viewable with any generic Multipurpose Internet Mail Extensions (MIME) reader. See the 1120 "Instance Document" for a sample of 1120 transmission. If you have any questions about the schemas, please send your inquiry to the MeF mailbox. Back to 1120 form family TY 2021
