Alternative Minimum Tax (AMT) Definition, How It Works, Who Pays in 2021-2022

Here's who pays AMT and how it's calculated.
Feb 24, 2022

Many or all of the products featured here are from our partners who compensate us. This may influence which products we write about and where and how the product appears on a page. However, this does not influence our evaluations. Our opinions are our own. Here is a list of our partners and here's how we make money.

What is alternative minimum tax (AMT)?

The alternative minimum tax, or AMT, is calculated using a different set of rules meant to ensure certain taxpayers pay at least a minimum amount of income tax. AMT calculations limit certain breaks for some taxpayers so their tax bill is higher. AMT rates are 26% or 28%.

How does alternative minimum tax work?

Incomes above the annual AMT exemption amounts typically trigger the alternative minimum tax. AMT payers, who typically have relatively high incomes, essentially calculate their income tax twice — under regular tax rules and under the stricter AMT rules — and then pay the higher amount owed.

AMT exemption amounts for 2021

(for taxes due in April 2022 or in October 2022 with an extension)

Single

Married, filing jointly

Exemption amount

$73,600

$114,600

Income at which exemption begins to phase out

$523,600

$1,047,200

The AMT exemption amount for certain individuals under 24 equals their earned income plus $7,950.

AMT exemption amounts for 2022

(for taxes due in April 2023)

Single

Married, filing jointly

Exemption amount

$75,900

$118,100

Income at which exemption begins to phase out

$539,900

$1,079,800

The AMT exemption amount for certain individuals under 24 equals their earned income plus $8,200.

How do I calculate alternative minimum tax (AMT)?

The alternative minimum tax runs parallel to the standard tax system, but it has a different tax rate structure and eliminates some common tax breaks. This is generally how the calculation works:

  1. Calculate your taxable income, but with fewer tax exclusions and tax deductions, as dictated by the AMT rules (IRS Form 6251 has the details on which tax breaks get the ax in the AMT calculations.)

  2. Once you have that AMT version of your taxable income, subtract the AMT exemption amount.

  3. Multiply what’s left by the appropriate AMT tax rates. The AMT has two tax rates: 26% and 28%. (Compare these to the seven federal income tax brackets, ranging from 10% to 37%.) Which rate you pay depends on how high your AMT taxable income is. (Again, IRS Form 6251 has the details.)

  4. Subtract the AMT foreign tax credit, if you qualify for it. What’s left is your income tax under the AMT rules.

  5. If your income tax under the AMT rules is higher than your income tax under the regular rules, you pay the higher amount. This basically determines who has to pay alternative minimum tax.

What tax breaks do you lose under the AMT?

Taxpayers typically look for deductions, credits and other ways to reduce their taxable income. Under the AMT, you may not be able to take as many of these breaks.

Deductions for state and local taxes (such as property taxes) are targets, for example. A range of business items are curtailed.

Investors also could face AMT. Long-term capital gains and certain dividends could push your income up into the AMT system.

» Ready to work with a financial planner? Some advisors can help with tax and estate planning.

Advertisement
Vanguard Personal Advisor Services
Zoe Financial
Facet Wealth
NerdWallet rating 
NerdWallet rating 
NerdWallet rating 
Fees

0.30%

management fee

Fees

Varies by advisor

Fees

$1,800 and up

per year (free initial consultation)

Account minimum

$50,000

Account minimum

$100,000

Account minimum

$0

Promotion

None

no promotion available at this time

Promotion

None

no promotion available at this time

Promotion

Get 2 free months

off your first year of financial planning.*

Do I have to pay alternative minimum tax?

There isn’t much you can do to avoid paying AMT if you find out you have to pay it when filing your return. But figuring out whether you are vulnerable to the AMT and what triggers it can help you plan ahead. Lowering your adjusted gross income by maxing out contributions to a 401(k), IRA or health savings account can help, for example, as can keeping an eye on the size of your long-term capital gains.

If you suspect that you might owe AMT, consult a tax expert to help you with the additional paperwork and reduce or avoid the tax.

If this is giving you a headache ...

Here’s some welcome news: Most good tax software will do both sets of calculations automatically. As you enter your information, the program will run the numbers in the background according to both the regular tax system (using Form 1040) and AMT rules (using Form 6251).

  • Federal: $24.95 to $64.95. Free version available for simple returns only.

  • State: $29.95 to $44.95.

  • All filers get access to Xpert Assist for free until April 7.

Promotion: NerdWallet users get 25% off federal and state filing costs.

  • Federal: $39 to $119. Free version available for simple returns only.

  • State: $49 per state.

  • TurboTax Live packages offer review with a tax expert.

Promotion: NerdWallet users can save up to $15 on TurboTax.

  • Federal: $29.99 to $84.99. Free version available for simple returns only.

  • State: $36.99 per state.

  • Online Assist add-on gets you on-demand tax help.


See more ways to save and invest for the future


Get more smart money moves – straight to your inbox
Sign up and we’ll send you Nerdy articles about the money topics that matter most to you along with other ways to help you get more from your money.