What Is Adjusted Gross Income (AGI)?

Adjusted gross income (AGI) is the figure that the Internal Revenue Service (IRS) uses to determine your income tax liability for the year. It is calculated by subtracting certain adjustments from gross income, such as business expenses, student loan interest payments, and other expenses. After calculating a taxpayer’s AGI, the next step is to subtract deductions to determine their taxable income.

The IRS also uses other income metrics, such as modified AGI (MAGI), for specific programs and retirement accounts.

Understanding Adjusted Gross Income (AGI)

As prescribed in the United States tax code, AGI is a modification of gross income. Gross income is simply the sum of all the money you earned in a year, which may include wages, dividends, capital gains, interest income, royalties, rental income, alimony, and retirement distributions, before tax or other deductions. AGI makes certain adjustments to your gross income to reach the figure on which your tax liability will be calculated.

Many U.S. states also use the AGI from federal returns to calculate how much individuals owe in state income taxes. States may modify this number further with state-specific deductions and credits.

Common Adjustments

The items subtracted from your gross income to calculate your AGI are referred to as adjustments to income, and you report them on Schedule 1 of your tax return when you file your annual tax return. Some of the most common adjustments are listed here, along with the separate tax forms on which a few of them are calculated:

• Alimony payments (for divorces filed before Jan. 1, 2019)
• Early withdrawal penalties on savings
• Educator expenses
• Employee business expenses for armed forces reservists, qualified performing artists, fee-basis state or local government officials, and employees with impairment-related work expenses (Form 2106)
• Health Savings Account (HSA) deductions (Form 8889)
• Moving expenses for members of the armed forces (Form 3903)
• Self-employed Simplified Employee Pension (SEP), Savings Incentive Match Plan for Employees of Small Employers (SIMPLE), and qualified plans
• Self-employed health insurance deduction
• Self-employment tax (the deductible portion)
• Student loan interest deduction

How to Calculate Adjusted Gross Income

If you use software to prepare your tax return, it will calculate your AGI once you input your numbers. If you calculate it yourself, you’ll begin by tallying your reported income for the year. That might include job income, as reported to the IRS by your employer on a W-2 form, plus other income, such as dividends and miscellaneous income, reported on 1099 forms.

Next, you add any taxable income from other sources, such as profit on the sale of a property, unemployment compensation, pensions, Social Security payments, or anything else that hasn’t already been reported to the IRS. Many of these income items are also listed on IRS Schedule 1.

The next step is to subtract the applicable adjustments to the income listed above from your reported income. The resulting figure is your AGI. To determine your taxable income, subtract either the standard deduction or your total itemized deductions from your AGI. In most cases, you can choose whichever gives you the most benefit.

For example, the standard deduction for tax returns for married couples filing jointly was $25,900 in 2022, rising to $27,700 in 2023, so couples whose itemized deductions exceed that amount would generally opt to itemize, while others would take the standard deduction.

The IRS provides a list of itemized deductions and the requirements for claiming them on its website. Your AGI also affects your eligibility for many of the deductions and credits available on your tax return. In general, the lower your AGI, the more significant the number of deductions and credits you will be eligible to claim, and the more you’ll be able to reduce your tax bill.

An Example of AGI Affecting Deductions

Let’s say you had some significant dental expenses during the year that weren’t reimbursed by insurance, and you’ve decided to itemize your deductions. You are allowed to deduct the portion of those expenses that exceed 7.5% of your AGI.

This means that if you report $12,000 in unreimbursed dental expenses and have an AGI of $100,000, you can deduct the amount that exceeds $7,500, which is $4,500. However, if your AGI is $50,000, the 7.5% reduction is just $3,750, and you’d be entitled to deduct a larger amount of that $12,000, in this case $8,250.

Adjusted Gross Income (AGI) vs. Modified Adjusted Gross Income (MAGI)

In addition to AGI, some tax calculations and government programs call for using what’s known as your modified adjusted gross income, or MAGI. This figure starts with your AGI, then adds back certain items, such as any deductions you take for student loan interest or tuition and fees.

Your MAGI is used to determine how much, if anything, you can contribute to a Roth individual retirement account (Roth IRA) in any given year. It is also used to calculate your income if you apply for Marketplace health insurance under the Affordable Care Act (ACA).

Many people with relatively uncomplicated financial lives find that their AGI and MAGI are the same number or very close.

Adjusted Gross Income vs. Gross Income vs. Taxable Income

Your gross income is all of the money you’ve earned in a year that isn’t exempt from taxation. This can be in the form of salary, wages, interest, dividends, capital gains, and so on.

Your adjusted gross income takes that amount and takes out certain qualified expenses and adjustments.

Taxpayers can then take either the standard deduction for their filing status or itemize the deductible expenses they paid during the year. You’re not permitted to both itemize deductions and claim the standard deduction. The result is your taxable income.

Frequently Asked Questions

The Bottom Line

Adjusted gross income, or AGI, is your gross income after it has been adjusted for certain qualified deductions that are permitted by the Internal Revenue Service (IRS). These qualified deductions reduce an individual’s gross income, thus reducing the taxable income that they will ultimately have to pay taxes on. You can save money come tax season by lowering your AGI, which will lower your taxable income, in turn. However, many of the adjustments allowed for AGI are specific for particular circumstances that may not apply to everyone.

What Is an Ad Valorem Tax?

An ad valorem tax is a tax based on the assessed value of an item, such as real estate or personal property. The most common ad valorem taxes are property taxes levied on real estate. However, ad valorem taxes may also extend to a number of tax applications, such as import duty taxes on goods from abroad.

How Ad Valorem Tax Works

The Latin phrase ad valorem means “according to value.” All ad valorem taxes are levied based on the determined value of the item being taxed. In the most common application of ad valorem taxes, which are municipal property taxes, the real estate of property owners is periodically assessed by a public tax assessor to determine its current value. The assessed value of the property is used to compute a tax annually levied on the property owner by a municipality or other government entity.

Ad valorem taxes, which are based on ownership of a real asset, can be looked at in contrast to transactional taxes, such as sales taxes. While ad valorem taxes are determined and levied annually, transactional taxes are only levied at the time of a transaction.

How Ad Valorem Taxes Are Levied

Property ad valorem taxes are usually levied by a municipality but may also be levied by other local government entities, such as counties, school districts, or special taxing districts, also known as special purpose districts. Property owners may be subject to ad valorem taxes levied by more than one entity; for example, both a municipality and a county.

Ad valorem property taxes are typically a major, if not the major, revenue source for both state and municipal governments, and municipal property ad valorem taxes are commonly referred to as simply “property taxes.”

Determining Tax Values

Tax assessments for the purpose of determining ad valorem taxes are typically calculated as of January 1 each year. Ad valorem taxes represent a percentage of the assessed property value, which is commonly the property’s fair market value. Fair market value is the estimated sales price of the property, assuming a transaction between a willing buyer and a willing seller who both have reasonable knowledge of all pertinent facts about the property, and in a situation where neither party has a compulsion to complete the transaction. Fair market value can be more simply understood as just a reasonable price.

Property Subject to Ad Valorem Taxes

Ad valorem taxes are generally levied on both real property and personal property. Real property includes land, buildings and other structures, and any improvements to the property. An example of an improvement is a garage added to a single-family home or a road built on a parcel of land. Personal property ad valorem taxes are most commonly levied only on major personal property holdings, such as a car or boat. Incidental personal property, such as household appliances or clothing, is not usually subject to personal property taxes.

What Is a 457 Plan?

A 457 plan is a tax-advantaged retirement savings plan offered to employees of many state and local governments and some nonprofit organizations. Like the better-known 401(k) plan in the private sector, the 457 plan allows employees to deposit a portion of their pre-tax earnings in an account, reducing their income taxes for the year while postponing the taxes due until the money is withdrawn after they retire.

A Roth version of the 457 plan, which allows after-tax contributions, may be allowed at the employer’s discretion.

There are two main types of 457 plans:

• The 457(b): This is the most common 457 plan and is offered to state and local government employees and nonprofits. It is a retirement savings plan that offers tax advantages to participants.
• The 457(f): This plan is offered only to highly compensated executives in tax-exempt organizations. It is a supplement to the 457(b) and it is, essentially, a deferred salary plan.

Types of 457 Plans

As noted, the 457 plan comes in two flavors, the 457(b) and the 457(f).

The 457(b) Plan

The 457(b) plan is most often offered to civil servants, police personnel, and other employees of government agencies, public services, and nonprofit organizations such as hospitals, churches, and charitable organizations.

It is similar to a 401(k). Participants set aside a percentage of their salary into a retirement account. The employees choose how their money is invested from a list of options, mostly mutual funds and annuities.

The account grows in value without being taxed over the years. When the employee retires, taxes will be due on the amount withdrawn.

Employees are allowed to contribute up to 100% of their salary, provided it does not exceed the dollar limit set for the year.

457(b) Contribution Limits

As of 2022, employees can contribute up to $20,500 per year to 457 plans. This limit increases to $22,500 for 2023.

In some cases, workers are allowed to contribute even more. For example, if an employer permits catch-up contributions, workers over the age of 50 may pay in an additional $6,500 a year, making their maximum contribution limit $27,000 ($20,500 + $6,500) in 2022. The catch-up contribution increases to $7,500 for tax year 2023, making the maximum contribution limit $30,000 ($22,500 + $7,500).

Also, 457(b) plans feature a “double limit catch-up” provision. This is designed to allow participants who are nearing retirement to compensate for years in which they did not contribute to the plan but were eligible to do so.

In this case, employees who are within three years of retirement age may contribute up to $41,000 in 2022 and up to $45,000 in 2023. 

Advantages and Disadvantages of a 457(b) Plan

The 457(b) plan has all of the advantages of a 401(k), although there are some differences.

Advantages of a 457(b)

Tax Benefits

If a traditional rather than a Roth plan is chosen, the contributions are deducted from an employee’s paycheck on a pre-tax basis. That amount is subtracted from the employee’s gross income, effectively lowering the person’s taxes paid for that year. For example, if Alex earns $4,000 per month and contributes $700 to a 457(b) plan, Alex’s taxable income for the month is $3,300.

Employees invest their contributions in their choice or choices from a selection of annuities and mutual funds.

All interest and earnings generated from year to year remain untaxed until the funds are withdrawn.

Withdrawals Without Penalty

There is one big difference between the 457(b) and other tax-advantaged retirement plans: no penalty for early withdrawals in some circumstances.

If an employee retires early or resigns from the job for any reason, the funds can be withdrawn without incurring a 10% penalty from the IRS. Early withdrawals from most retirement plans are subject to the penalty except for certain hardship reasons. (The penalty was waived for two years during the COVID-19 pandemic.) 

A 457(b) account holder can take a penalty-free withdrawal without changing jobs, like a 401(k) account holder. The list of acceptable reasons, however, is limited to “unforeseeable emergencies.”

Exceptions to the Rules

Early withdrawals from a 457(b) are subject to the 10% penalty if the account holder rolls the funds over from a 457 to any other tax-advantaged retirement account, such as a 401(k). This would happen if, for example, a government employee quit to take a job in the private sector.

In addition, anyone who takes money out of a retirement account early must keep in mind that any income taxes due on that money will be owed in the year that the withdrawal is taken.

Disadvantages of a 457(b) Plan

One potential advantage of most tax-advantaged retirement savings plans is the employer match. An employer may choose to match some portion of an employee’s contribution to the plan. An employer who matches the first 3% of the employee’s contribution, for example, is presenting the employee with a 3% raise.

Employer Match Is Rare

Employers can match their employees’ contributions to a 457(b) but, in practice, most don’t.

If they do, the employer contribution counts toward the maximum contribution limit. This is not the case for 401(k) plans.

For instance, in 2022, if an employer contributes $10,000 to a 457(b) plan, the employee can add only $10,500 for the year until the $20,500 contribution limit is reached (except for those eligible to use the catch-up option).

457(b) vs. 403(b)

The 403(b) plan, like the 457(b), is mostly available to public service employees. They are a particularly common benefit offered to public school teachers.

The 403(b) has its origins in the 1950s when it exclusively offered an annuity to participants. Participants still have the option of creating an annuity but they also can choose to invest in mutual funds.

In fact, the 403(b) has changed over the years until it closely resembles the private sector’s 401(k) plan, although the investment choices offered to participants are relatively limited.

The annual contribution limits are identical to those of the 457(b) and 401(k) plans.

If you’re a public employee, your employer may well offer a 457(b) or a 403(b).

What Is a 403(b) Plan?

The term 403(b) plan refers to a retirement account designed for certain employees of public schools and other tax-exempt organizations. Participants may include teachers, school administrators, professors, government employees, nurses, doctors, and librarians.

The 403(b) plan, which is closely related to the better-known 401(k) plan, allows participants to save money for retirement through payroll deductions while enjoying certain tax benefits. There’s also an option for the employer to match part of the employee’s contribution.

How 403(b) Plans Work

As noted above, individuals employed by schools and other tax-exempt organizations can save for retirement by contributing to a 403(b) plan through payroll deductions. The plan is akin to the 401(k) plan used by private-sector employees. Participants can include:

• Employees of public schools, state colleges, and universities
• Public school employees of Indian tribal governments
• Church employees
• Employees of tax-exempt 501(c)(3) organizations
• Ministers and clergy members

The 403(b) plan has the same caps on yearly contributions that come with 401(k) plans. The maximum contributions allowed are $20,500 and $22,500 for the 2022 and 2023 tax years respectively. For 2022, he plan also offers $6,500 catch-up contributions for those age 50 and older, increasing to $7,500 for 2023. Combined employee and employer contributions are limited to the lesser of $61,000 in 2022 and $66,000 in 2023 or 100% of the employee’s most recent yearly salary.

Participants must reach age 59½ before withdrawing funds or get slapped with an early withdrawal penalty. 

Special Considerations

Although it is not very common, your job situation could end up giving you access to both a 401(k) and a 403(b) plan. Each offers employees a tax-advantaged way to save for retirement, but investment choices are often more limited in a 403(b) plan than a 401(k). And remember, 401(k)s serve private-sector employees.

But unlike a 401(k), the 403(b) plan also offers a special plan for those with 15 or more years of service with the same employer (see below).

Types of 403(b) Plans

There are generally two broad types of 403(b) plan—the traditional and the Roth. Not all employers allow employees access to the Roth version.

A traditional 403(b) plan allows the employee to have pretax money automatically deducted from each paycheck and paid into a personal retirement account. The employee has put away some money for the future and at the same time reduced his or her gross income (and income taxes owed for the year). The taxes will be due on that money only when the employee withdraws it.

A Roth 403(b) requires that after-tax money be paid into the retirement account. There’s no immediate tax advantage. But the employee will not owe any more taxes on that money or the profit it accrues when it is withdrawn.

Advantages and Disadvantages of 403(b) Plans

There are distinct benefits and drawbacks of holding a 403(b) plan. We’ve highlighted some of the most common ones below.

Advantages

Earnings and returns on amounts in a regular 403(b) plan are tax-deferred until they are withdrawn. Earnings and returns on amounts in a Roth 403(b) are tax-deferred if the withdrawals are qualified distributions.

Certain 403(b) plans are not required to meet the onerous oversight rules of the Employee Retirement Income Security Act (ERISA). As such, these plans tend to come with lower administrative costs, which puts more money back into the employee’s pocket.

Many 403(b) plans vest funds over a shorter period than 401(k)s, and some even allow immediate vesting of funds, which 401(k)s rarely do.

If an employee has 15 or more years of service with certain nonprofits or government agencies, they may be able to make additional catch-up contributions to a 403(b) plan. Under this provision, you can contribute an additional $3,000 a year, up to a lifetime limit of $15,000. And unlike the usual retirement plan catch-up provisions, you don’t have to be 50 or older to take advantage of this as long as you worked for the same eligible employer for the whole 15 years.

Disadvantages

Funds withdrawn from a 403(b) plan before age 59½ are subject to a 10% tax penalty, although you may avoid the penalty under certain circumstances, such as separating from an employer at age 55 or older, needing to pay a qualified medical expense, or becoming disabled.

A 403(b) may offer a narrower choice of investments than other plans. Although these plans now offer mutual fund options inside variable annuity contracts. you can only choose between fixed and variable contracts, and mutual funds inside these plans⁠—other securities, such as stocks and real estate investment trusts (REITs), are prohibited.

The presence of an investment option that 403(b)s favor is, at best, a mixed blessing. When the 403(b) was invented in 1958, it was known as a tax-sheltered annuity. While times have changed, and 403(b) plans can now offer mutual funds, as noted, many still emphasize annuities.

Financial advisors often recommend against investing in annuities within a 403(b) and other tax-deferred investment plans. Accounts may lack the same level of protection from creditors as plans that require ERISA compliance. If you are at risk of creditors pursuing you, speak to a local attorney who understands the nuances of your state as the laws can be complex.

Another disadvantage of non-ERISA 403(b)s is their exemption from nondiscrimination testing. Done annually, this testing is designed to prevent management-level or highly compensated employees from receiving a disproportionate amount of benefits from a given plan.