The IRS Modernized e-File (MeF) system allows e-filing for the current tax year and two previous years (referred to as T, T-1, and T-2). TaxZerone supports e-filing for the same range of tax years that the IRS accepts through MeF. However, there are some exceptions.
Refer to the table below for more information:
What are the tax years supported by the IRS?
The IRS Modernized e-File (MeF) system allows e-filing for the current tax year and two previous years (referred to as T, T-1, and T-2). TaxZerone supports e-filing for the same range of tax years that the IRS accepts through MeF. However, there are some exceptions.
Refer to the table below for more information:
Category
Forms
Years Available
Exempt Org. Forms
Form 990-N, Form 990-EZ, Form990,
Form 990-PF, Form 990-T and Form 199
2025, 2024, 2023
Exempt Org. Forms
Form 5227
2025, 2024
Employment Tax Forms
Form 941
2025, 2024, 2023
Employment Tax Forms
Form 941-X, Form 941 Schedule R, Form 941-SP
2025, 2024
Employment Tax Forms
Form 940, Form 940 Amendment
2025, 2024, 2023
Employment Tax Forms
Form 943, Form 943-X, Form 944, Form 945, Form 945-X
2025, 2024
Excise Tax Forms
Form 2290, Form 2290 Amendment
2025, 2024, 2023
Extension Tax Forms
Form 7004, Form 4868, Form 8868, Form 8809
2025, 2024
Extension Tax Forms
Form 15397
2025
Information Returns
W-2, W-2c, 1099-NEC, 1099-MISC, 1099-A, 1099-B, 1099-C, 1099-DIV, 1099-G, 1099-INT, 1099-K, 1099-LTC, 1099-OID, 1099-PATR,1099-Q, 1099-R, 1099-S, 1099-SA, 1094-B, 1094-C, 1095-B, 1095-C,
2025, 2024, 2023
Information Returns
1097-BTC, 1098, 1098-C, 1098-E, 1098-F, 1098-Q, 1098-T, 3921, 3922, 5498, 5498-ESA, 5498-SA, W-2G
2025, 2024
Information Returns
1099-DA, 5498-QA, 1042-S
2025
Business Tax Forms
Form 1120-s
2025, 2024
Business Tax Forms
Form 1065
2025
Essential Forms
W-9, Report BOI, W-8BEN, Form 8655
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Last modified: January 27, 2026
