What Is the Alternative Minimum Tax?

An alternative minimum tax (AMT) places a floor on the percentage of taxes that a filer must pay to the government, no matter how many deductions or credits the filer may claim.

The United States currently has an alternative minimum tax for taxpayers who earn above certain income thresholds.

The AMT recalculates income tax after adding certain tax preference items back into adjusted gross income. It uses a separate set of rules to calculate taxable income after allowed deductions. Preferential deductions are added back into the taxpayer’s income to calculate their alternative minimum taxable income (AMTI), and then the AMT exemption is subtracted to determine the final taxable figure.

How the Alternative Minimum Tax Works

The difference between a taxpayer’s alternative minimum taxable income and his AMT exemption is taxed using the relevant rate schedule. This yields the tentative minimum tax (TMT).

If the tentative minimum tax is higher than the taxpayer’s regular tax liability for the year, then they pay the regular tax and the amount by which the tentative minimum tax exceeds the regular tax. In other words, the taxpayer pays the full tentative minimum tax.

There are two alternative minimum tax rates, 26% and 28%. For 2022, the 28% rate applies to excess alternative minimum taxable income of $206,100 or more for all taxpayers ($103,050 for married couples filing separate returns). For 2023, the 28% rate applies to excess alternative minimum taxable income of $220,700 or more for all taxpayers ($110,350 for married couples filing separate returns). The 26% rate applies to incomes up to those levels.

A taxpayer who has a high income and uses large tax breaks may owe a smaller percentage under the standard rules. If so, the taxpayer is obliged to recalculate the taxes owed under the alternative minimum tax system, which eliminates some of those tax breaks.

The taxpayer will owe whichever amount is higher.

AMT Exemption Amounts

For tax year 2022, the AMT exemption for single filers is $75,900. For married joint filers, the figure is $118,100. For tax year 2023, the figures are $81,300 for single filers and $126,500 for married joint filers.

Taxpayers have to complete Form 6251 to see whether they might owe AMT. First, they subtract the exemption amount from their income. If their AMT is less than the exemption, they do not have to pay AMT.

It’s important to note, though, that taxpayers with AMTI over a certain threshold do not qualify for the AMT exemption. For tax year 2022, the phase-out begins at $539,900 for single filers and $1,079,800 for couples filing jointly. For tax year 2023, the phase-out begins at $578,150 for single filers and $1,156,300.

Purpose of AMT

AMT is designed to prevent taxpayers from escaping their fair share of tax liability through tax breaks. However, in the past, the structure was not indexed to inflation or tax cuts. This can cause bracket creep, a condition in which middle-income taxpayers could be subject to this tax instead of just the wealthy taxpayers for whom AMT was invented. In 2012, however, Congress passed a law indexing the AMT exemption amount to inflation.

Calculating AMT

To determine if they owe AMT, individuals can use tax software that automatically does the calculation, or they can fill out IRS Form 6251. This form takes medical expenses, home mortgage interest, and several other miscellaneous deductions into account to help tax filers determine if their deductions are beyond an overall limit set by the IRS.

The form also requests information on certain types of income such as tax refunds, investment interest, and interest from private activity bonds, as well as numbers corresponding with capital gains or losses related to the disposition of property.

The IRS has specific formulas in place to determine which portion of this income and deductions the tax filers need to note on Form 6251. It uses another set of formulas to determine how these numbers lead to AMTI.

The Bottom Line

The Alternative Minimum Tax is an additional or parallel tax system in the U.S. that is designed to ensure that high-income individuals pay their fair share of taxes. Prior to the AMT, certain taxpayers paid little in the way of taxes, due to preferential treatment of certain income and expenses, or tax breaks.

What Is a 529 Plan?

A 529 plan is a tax-advantaged savings plan designed to help pay for education. Originally limited to postsecondary education costs, it was expanded to cover K-12 education in 2017 and apprenticeship programs in 2019.

The two major types of 529 plans are education savings plans and prepaid tuition plans.

Education savings plans grow tax-deferred, and withdrawals are tax-free if they’re used for qualified education expenses. Prepaid tuition plans allow the account owner to pay current tuition rates for future attendance at designated colleges and universities. That means that, most likely, you can lock in a lower cost of college attendance.

529 plans are also referred to as qualified tuition programs and Section 529 plans.

Understanding 529 Plans

Although 529 plans take their name from Section 529 of the federal tax code, the plans themselves are administered by the 50 states and the District of Columbia.

Anyone can open a 529 account, but they are typically established by parents or grandparents on behalf of a child or grandchild, who is the account’s beneficiary.

In some states, the person who funds the account may be eligible for a state tax deduction for their contributions.

The money in a 529 plan grows on a tax-deferred basis until it is withdrawn. What’s more, as long as the money is used for qualified education expenses as defined by the IRS, those withdrawals aren’t subject to either state or federal taxes. In addition, some states may offer tax deductions on contributions.

In the case of K-12 students, tax-free withdrawals are limited to $10,000 per year.

Since tax benefits vary depending on the state, it’s important that you check the details of any 529 plan to understand the specific tax benefits that you may or may not be entitled to.

Types of 529 Plans

The two main types of 529 plans have some significant differences.

Education Savings Plans

529 savings plans are the more common type. The account holder contributes money to the plan. That money is invested in a pre-set selection of investment options.

Account-holders can choose the investment (usually mutual funds) that they want to invest in. How those investments perform will determine how much the account value grows over time.

Many 529 plans offer target-date funds, which adjust their assets as the years go by, becoming more conservative as the beneficiary gets closer to college age.

Withdrawals from a 529 savings plan can be used for both college and K-12 qualified expenses. Qualified expenses include tuition, fees, room and board, and related costs.

The SECURE Act of 2019 expanded tax-free 529 plan withdrawals to include registered apprenticeship program expenses and up to $10,000 in student loan debt repayment for both account beneficiaries and their siblings.

And the SECURE Act of 2022, passed as part of the 2023 Omnibus funding bill, will permit rolling over up to $35,000 of unspent funds in a 529 account into a Roth IRA account, starting on Jan. 1, 2024. To qualify, the account must be at least 15 years old,

Prepaid Tuition Plans

Prepaid tuition plans are offered by a limited number of states and some higher education institutions. They vary in their specifics, but the general principle is that they allow you to lock in tuition at current rates for a student who may not be attending college for years to come. Prepaid plans are not available for K-12 education.

As with 529 savings plans, prepaid tuition plans grow in value over time. Eventual withdrawals from the account used to pay tuition are not taxable. However, unlike savings plans, prepaid tuition plans do not cover the costs of room and board.

Prepaid tuition plans may place a restriction on which colleges they may be used for. The money in a savings plan, by contrast, can be used at almost any eligible institution.

In addition, the money paid into a prepaid tuition plan isn’t guaranteed by the federal government and may not be guaranteed by some states. Be sure you understand all aspects of the prepaid tuition plan.

Tax Advantages of 529 Plans

Withdrawals from a 529 plan are exempt from federal and state income taxes, provided the money is used for qualified educational expenses.

Any other withdrawals are subject to taxes plus a 10% penalty, with exceptions for certain circumstances, such as death or disability.

The money you contribute to a 529 plan isn’t tax deductible for federal income tax purposes. However, more than 30 states provide tax deductions or credits of varying amounts for contributions to a 529 plan.

In general, you’ll need to invest in your home state’s plan if you want a state tax deduction or credit. If you’re willing to forgo a tax break, some states will allow you to invest in their plans as a nonresident.

Advantages and Disadvantages of 529 Plans

What Is an Amended Return?

An amended return is a form filed in order to make corrections to a tax return from a previous year. An amended return can correct errors and claim a more advantageous tax status, such as a refund. For example, one might choose to file an amended return in instances of misreported earnings or tax credits. Mathematical errors, however, do not require amendments because the IRS automatically corrects for such errors when processing the tax return.

Who Should File an Amended Return?

All taxpayers are required to file their taxes annually for the previous tax year. Taxpayers may realize that they made a mistake in filling out their tax forms, or their circumstances may have changed after they have submitted or mailed a return that has been accepted by the government. If this occurs, the Internal Revenue Service (IRS) has provided a way for these individuals to redo their taxes by providing an amended return form, Form 1040-X, on the IRS website.

Not all errors need amending by the form. The IRS will spot and correct a mathematical error, for example, when the initial tax return is sent in for processing. When this happens, any refund owed will be adjusted and any extra tax liability due will be billed to the taxpayer. In the event that the individual fails to include a required form or schedule in their submitted original tax return, the IRS will send a letter requesting that they mail the missing information to one of their offices.

When to File an Amended Return

A taxpayer must file an amended return if:

• The taxpayer’s filing status for the tax year changed or was incorrectly entered. For example, if an individual filed as single but actually got married on the last day of the tax year, they will need to amend their return by filing their taxes under the appropriate status—married filing jointly (MFJ) or married filing separately (MFS).
• The number of dependents claimed is inaccurate. An amended return will be necessary if a taxpayer needs to claim additional dependents or remove dependents that were previously claimed. For example, a couple may have included a baby born in January before taxes were filed in April on the prior year’s tax return. That baby cannot be included on the previous year’s tax return because they were not born before the end of the year.
• Tax credits and deductions were claimed incorrectly or were not claimed. In the latter case, the taxpayer may have realized that they qualified for a credit or deduction and may want to file an amended return to reflect this.
• The income reported for the tax year was incorrect. If a taxpayer receives additional tax documents for the tax year (say a Form 1099 or a K-1 arrives in the mail after the tax deadline), they may file an amended tax return to report the additional income.
• Deductibility of certain expenses change as a result of legislation changes. Sometimes, legislation will come through after a taxpayer has filed a return that affects the deductibility of certain expenses. For example, the deduction for private mortgage insurance (PMI) originally expired on Dec. 31, 2017, due to the Tax Cuts and Jobs Act of 2017. The Consolidated Appropriations Act, signed into law in December 2019, extended the deduction through Dec. 31, 2020. This made the deduction available for the 2019 and 2020 tax years and retroactive for the 2018 tax year.
• Tax relief due to a natural disaster changes the taxpayer’s tax liability. This is a common issue for taxpayers who have been affected by a natural disaster, especially one in the later part of the tax year. The government frequently offers tax relief for those affected by natural disasters, but legislation may take longer to finalize than the typical tax season window allows. Taxpayers should pay their full tax liability as it sits when the tax return is due. If legislation changes, an amended return can be filed to reclaim any refund owed to them due to natural disaster tax relief.
• The taxpayer realizes that they owe more taxes than they actually paid. To avoid getting hit with a penalty from the government, they can file an amended return with the IRS.

How to Amend a Tax Return

Form 1040-X has three columns: A, B, and C. Under column A, the figure that was reported in the original or last-amended tax form is recorded. The taxpayer will need to input the adjusted or correct number in column C. The difference between columns A and C is reflected in column B. The adjustments made to a tax return will either result in a tax refund, balance due, or no tax change. The taxpayer also has to explain what changes they are making and the reasons for making each change in a section provided on the back of Form 1040-X.

Disadvantages of an Amended Tax Return

The drawback of filing an amended tax return is that Form 1040-X cannot be submitted electronically for every tax year, although the IRS has recently started accepting e-filed amended returns for tax year 2019. If filling out the form manually, the taxpayer has to mail the printed-out document to the IRS Service Center that processed the original tax form. The IRS manually processes amended returns, and the process can take 16 weeks—or even longer, if the amended return is not signed, is incomplete, has errors, requires additional information, needs clearance by the IRS bankruptcy department, has been routed to another specialized area, or has been affected by identity fraud.

There is, however, a three-year statute of limitations for issuing tax refund checks. Therefore, the taxpayer must file any amended returns that will result in a tax refund within three years after the date they filed the original tax return. An amended return filed to account for additional income or overstated deductions does not fall under any such statute and can be filed at any time.

Download Amended Tax Return Form Here

All current and prior revisions of the IRS Form 1040-X are available on the IRS website here.