Common questions about Form 6251 in ProSeries

ProSeries fills out the 6251 based on entries in the return to see if there are any tax implications from AMT. Some of the most common areas that will generate AMT adjustments are:

• Employer stock: See Methods for entering stock transactions for the Schedule D
• Depreciation: See Common questions on the asset entry worksheet in ProSeries
• Canceled debt: See Completing the Canceled Debt Worksheet in ProSeries

Future changes for tax year 2026

For tax years beginning after December 31, 2025, the One Big Beautiful Bill act will make changes to Alternative Minimum Tax (AMT) by extending the increase AMT exemptions and phase-out thresholds to 50%. These changes will go into effect in tax year 2026.