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Updates for TY 2026
The links below provide information and technical guidance for software developers and transmitters who are interested in developing software for the Modernized e-File Forms 990, 990-EZ, 990-N, 990-PF, 990-T, 1120-POL, 8868, 4720, 5227 and 5330 for tax year (TY) 2025 and Form 8038-CP for TY 2026. Included are the XML schemas, business rules, release memorandums and specific instructions.
Developers and other authorized IRS e-file providers can find information on e-filing returns through MeF in Publication 4163 PDFand Publication 4164.
Test scenarios for the Form 990 family, 990-N, 990-T, 1120-POL, 8868, 4720, 5227, 5330, and 8038-CP are listed on the Exempt organizations and other tax-exempt entities MeF Assurance Testing System (ATS) test scenarios page.
General testing information can be found in Publication 5078 PDF.
Tax year 2026 documents
- Tax year 2026 Forms 990/990-EZ/990-PF XLSX, 990-T XLSX, 1120-POL XLSX, 4720 XLSX, 5330 XLSX, and 8038-CP XLSX MeF forms attachment listing
- Tax year 2026 Form 8868 for exempt organizations MeF return due dates PDF
- Tax year 2026 Form 8868 for Form 5330 MeF return due dates PDF
- Tax year 2026 stylesheets: MeF stylesheets
- Known e-file issues and solutions
Production & Acceptance Testing System (ATS): Current valid schemas
Form 990/990-EZ/990-PF
Links to Form 990 TY 2025 schemas, business rules, release memos
| Version | Available date | ATS dates | Production dates |
|---|---|---|---|
| 2026v1.0 | 5/28/2026 | TBD | Not operational in production |
Form 990-N
Links to Form 990-N TY 2026 schemas, business rules, release memos
| Version | Available date | ATS dates | Production dates |
|---|---|---|---|
| 2026v1.0 | 5/28/2026 | Start date: TBD End date: | TBD |
Form 990-T
Links to Form 990-T TY 2026 schemas, business rules, release memos
| Version | Available date | ATS dates | Production dates |
|---|---|---|---|
| 2026v1.0 | 5/28/2026 | TBD | Not operational in production |
Form 1120-POL
Links to Form 1120-POL TY2026 schemas, business rules, release memos
| Version | Available date | ATS dates | Production dates |
|---|---|---|---|
| 2026v1.0 | 5/28/2026 | TBD | Not operational in production |
Form 8868
Links to Form 8868 TY2026 schemas, business rules, release memos
| Version | Available date | ATS dates | Production dates |
|---|---|---|---|
| 2026v1.0 | 5/28/2026 | Start date: TBD End date: | TBD |
Form 4720
Links to Form 4720 TY2026 schemas, business rules, release memos
| Version | Available date | ATS dates | Production dates |
|---|---|---|---|
| 2026v1.0 | 5/28/2026 | Start date: TBD End date: | Not operational in production |
Form 5227
Links to Form 5227 TY 2026 schemas, business rules, release memos
| Version | Available date | ATS dates | Production dates |
|---|---|---|---|
| 2026v1.0 | 5/28/2026 | TBD | TBD |
Form 5330
Links to Form 5330 TY 2026 schemas, business rules, release memos
| Version | Available date | ATS dates | Production dates |
|---|---|---|---|
| 2026v1.0 | 5/28/2026 | Start date: TBD End date: | Not operational in production |
Form 8038-CP
Links to Form 8038-CP TY 2027 schemas, business rules, release memos
| Version | Available date | ATS dates | Production dates |
|---|---|---|---|
| 2027v1.0 | 5/28/2026 | Start date: TBD End date: | TBD |