Quick Answer
Most refundable credits (like the Child Tax Credit and EITC) work fully against AMT, but nonrefundable credits are limited to your AMT liability. In 2026, AMT exemptions are $85,700 (single) and $133,300 (married filing jointly), affecting fewer taxpayers than before 2018.
Best Answer
Michelle Woodard, Tax Policy Analyst
Best for taxpayers with income over $200,000 who may be subject to AMT
How AMT limits your tax credits
The Alternative Minimum Tax creates a parallel tax calculation that can severely limit the benefit of many tax credits. Here's the key distinction: refundable credits work fully against AMT, while nonrefundable credits are limited to your AMT liability.
Under AMT rules, you calculate your tax liability two ways and pay the higher amount. This means some credits that would eliminate your regular tax liability become worthless if AMT applies.
Which credits are affected by AMT
Refundable credits (work fully against AMT):
Nonrefundable credits (limited by AMT):
Example: $250,000 income with multiple credits
Let's say you're married filing jointly with $250,000 in income and the following credits:
Regular tax calculation:
AMT calculation:
Result: You pay $27,083 (the higher AMT amount), losing the benefit of $4,000 in nonrefundable credits.
Key factors that trigger AMT
Strategies to maximize credits under AMT
Timing strategies:
Credit selection:
What you should do
Run both regular tax and AMT calculations before claiming credits. Use tax software or consult a professional to model different scenarios. If you're subject to AMT, focus on maximizing refundable credits and consider timing strategies for nonrefundable ones.
[Use our return scanner](return-scanner) to identify which credits you're eligible for and whether AMT might limit their benefit.
Key takeaway: Refundable credits like the Child Tax Credit work fully against AMT, but nonrefundable credits are limited to your AMT liability, potentially making them worthless for high-income taxpayers.
*Sources: [IRS Publication 909](https://www.irs.gov/pub/irs-pdf/p909.pdf), [IRS Form 6251 instructions](https://www.irs.gov/pub/irs-pdf/i6251.pdf)*
Key Takeaway: Refundable credits work fully against AMT, but nonrefundable credits are limited to AMT liability, potentially losing $4,000+ in credit benefits for high-income taxpayers.
How different credit types are affected by AMT
| Credit Type | Regular Tax Benefit | AMT Treatment | Potential Loss |
|---|---|---|---|
| Child Tax Credit (refundable) | Up to $2,000 per child | Full benefit retained | $0 |
| Child & Dependent Care | Up to $1,200 | Limited to AMT liability | Up to $1,200 |
| Lifetime Learning | Up to $2,000 | Limited to AMT liability | Up to $2,000 |
| Energy Credits | 30% of costs | Limited to AMT liability | Varies |
| Credit for Elderly | Up to $1,125 per person | Limited to AMT liability | Up to $1,125 |
More Perspectives
Robert Kim, Tax Return Analyst
Self-employed individuals and business owners who may trigger AMT through ISO options or business deductions
Business-specific AMT triggers
As a business owner, you face unique AMT risks beyond high income. The most common trigger is incentive stock options (ISOs) - the spread between exercise price and fair market value becomes an AMT preference item.
Example: You exercise ISOs with a $50,000 spread in 2026. This $50,000 gets added to your AMT income, potentially triggering AMT even if your regular income isn't that high.
Credits most affected for business owners
Research and Development Credit: Often the biggest casualty under AMT. If you claim $25,000 in R&D credits but owe $20,000 in AMT, you lose $5,000 in credit value.
Work Opportunity Tax Credit: Limited to AMT liability, reducing the benefit of hiring from target groups.
Energy Credits: Business solar, wind, and other energy credits are nonrefundable and AMT-limited.
Planning strategies
Track your AMT exposure quarterly, especially if you have significant ISO exercises or business credits. The interaction can cost thousands in lost credit value.
Key takeaway: Business owners with ISOs or large nonrefundable credits should model AMT impact quarterly to avoid losing credit benefits.
Key Takeaway: Business owners with ISOs or large nonrefundable credits should model AMT impact quarterly to avoid losing credit benefits.
Michelle Woodard, Tax Policy Analyst
Retirees who may face AMT due to pension income, IRA distributions, or state tax issues
Why retirees hit AMT
Retirees often trigger AMT unexpectedly through:
Credits retirees lose to AMT
Credit for the Elderly or Disabled: This nonrefundable credit becomes worthless under AMT, potentially costing $1,125 per person.
Foreign Tax Credit: If you have international investments, this credit is limited by AMT liability.
Energy Credits: Home solar installations and energy-efficient improvements lose value under AMT.
Example: $180,000 retirement income
Say you have $120,000 in pension/IRA distributions plus $60,000 in Social Security (with $48,000 taxable). You pay $18,000 in state taxes and claim $3,000 in energy credits.
Under regular tax: Credits reduce your liability significantly.
Under AMT: State tax deduction is limited, income is higher, and energy credits may provide no benefit.
Retirement planning around AMT
Key takeaway: Retirees can unexpectedly hit AMT through large distributions and state taxes, losing valuable credits like the Credit for the Elderly.
Key Takeaway: Retirees can unexpectedly hit AMT through large distributions and state taxes, losing valuable credits like the Credit for the Elderly.
Sources
- IRS Publication 909 — Alternative Minimum Tax for Individuals
- IRS Form 6251 Instructions — Alternative Minimum Tax - Individuals
Reviewed by Michelle Woodard, Tax Policy Analyst on February 28, 2026
This content is for educational purposes only and is not a substitute for professional tax advice. Consult a qualified tax professional for advice specific to your situation.