You may be asked about Alternative Minimum Tax (AMT) information because the Foreign Tax Credit (FTC) must be evaluated under both the regular tax system and the AMT system if you are subject to AMT.
AMT-related information is only required when Form 6251 (Alternative Minimum Tax – Individuals) determines that AMT applies and that a separate limitation is needed for the foreign tax credit.
Why AMT Is Relevant
The AMT is a parallel tax system that recomputes taxable income using different rules. When AMT applies:
- A separate AMT computation of the Foreign Tax Credit is required
- This is generally done using a separate Form 1116 prepared for AMT purposes (“AMT Form 1116”)
- The credit is then subject to limitation under IRC §59(a) based on AMT foreign-source taxable income.
How the Credits Interact
- Regular tax Foreign Tax Credit → computed on Form 1116 (regular tax version)
- AMT Foreign Tax Credit → computed using a separate AMT Form 1116 calculation
- The AMT FTC is then carried to Form 6251
- Form 6251 applies the AMT limitation and determines whether the credit can reduce Tentative Minimum Tax (TMT)
- Differences arise because AMT uses a separate definition of taxable income and foreign-source income.
Carryover Implications
If AMT applies:
- The allowable foreign tax credit may differ between regular tax and AMT systems
- This may result in different carryover amounts under each system
- Separate limitation tracking may apply depending on whether the credit is used under regular tax or AMT.
Simplified Limitation Election (When Applicable)
In limited cases, taxpayers may be eligible for a simplified method that:
- Uses regular tax foreign-source income instead of fully recomputing AMT-specific foreign-source income
- Reduces the complexity of calculating the AMT foreign tax credit limitation
This election is only available if the taxpayer meets the conditions in the Form 1116 and Form 6251 instructions.
Source:
Form 1116 Instructions (2025)
Disclaimer: Always verify details with the current year’s IRS Form 1116 instructions and Form 6251 instructions. For complex situations, consult a CPA or tax attorney.