There are several forms affected by the late legislation that require more extensive programming and testing of IRS systems. The IRS hopes to begin accepting tax returns including these tax forms between late February and into March; a specific date will be announced in the near future.

The key forms that require more extensive programming changes include Form 5695 (Residential Energy Credits), Form 4562 (Depreciation and Amortization) and Form 3800 (General Business Credit). A full listing of the forms that won’t be accepted until later is available on IRS.GOV