What Is 501(c)?

501(c) is a designation under the United States Internal Revenue Code (IRC) that confers tax-exempt status on nonprofit organizations. Specifically, it identifies which nonprofit organizations are exempt from paying federal income tax.

The government offers this tax break to promote the presence of organizations that exist purely for the public good and help them stay afloat. Common tax-exempt organizations include charities, government entities, advocacy groups, educational and artistic groups, and religious entities. 

Types of 501(c) Organizations

Under subsection 501(c), there are multiple sections that delineate the different types of tax-exempt organizations, according to their purpose and operations.

The most common include:

• 501(c)(1): Any corporation that is organized under an act of Congress that is exempt from federal income tax
• 501(c)(2): Corporations that hold a title of property for exempt organizations
• 501(c)(3): Corporations, funds, or foundations that operate for religious, charitable, scientific, literary, or educational purposes
• 501(c)(4): Nonprofit organizations that promote social welfare
• 501(c)(5): Labor, agricultural, or horticultural associations
• 501(c)(6): Business leagues, chambers of commerce, etc., that are not organized for profit
• 501(c)(7): Recreational organizations

501(c)(3) Organizations

The 501(c)(3) organization is probably the most familiar tax category outlined in Section 501(c)(3) of the IRC. It covers the sort of nonprofits that people commonly come into contact with, and donate money to (see Special Considerations, below).

In general, there are three types of entities that are eligible for 501(c)(3) status: charitable organizations, churches/religious entities, and private foundations. 

Other Types of 501(c) Organizations

The 501(c) designation has expanded over time to encompass more types of organizations.

Other organizations that qualify for listing under this designation can potentially include:

• Fraternal beneficiary societies that operate under the lodge system and provide for the payment of life, illness, and other benefits for their members and dependents
• Teacher’s retirement fund associations, so long as they are local in nature and none of their net earnings grow for the benefit of a private shareholder
• Benevolent life insurance associations that are local
• Certain mutual cooperative electric and telephone companies
• Nonprofit, co-op health insurers
• Cemetery companies that are owned and operated for the exclusive benefit of their members or are not operated for profit
• Credit unions that do not have capital stock organized
• Insurers—aside from life insurance companies—with gross receipts that are less than $600,000
• A variety of trusts for such purposes as providing supplement unemployment benefits and pensions
• Organizations whose membership is made up of current and former members of the armed forces of the United States or their spouses, widows, descendants, and auxiliary units in their support

Tax-Deductible Donations to 501(c) Organizations

In addition to being tax-exempt themselves, 501(c) organizations offer a tax advantage to others: A portion of donations they receive may be deductible from a taxpayer’s adjusted gross income (AGI). Organizations falling under section 501(c)(3)—which are primarily charities and educational or social-welfare-orientated nonprofits—are often qualified to offer this benefit to donors.

In general, an individual who itemizes deductions on their tax return may deduct contributions to most charitable organizations up to 50% (60% for cash contributions) of their AGI computed without regard to net operating loss carrybacks. Individuals generally may deduct charitable contributions to other organizations up to 30% of their AGI.

A charity or nonprofit must have 501(c)3 status if you plan to deduct your donation to it on your federal tax return. The organization itself can often tell you which sorts of donations are deductible, and to what extent—for example, if you buy a one-year museum membership for $100, $50 might be deductible.

The Bottom Line

Organizations that are formed strictly to help the public and not primarily to make a profit, as is the case with most businesses, are an important presence in society. The U.S. government rewards these entities with a 501(c) designation and tax-exempt status because they reduce the burden on the state and improve the lives of the population.

We aren’t just talking about charities here, either. The IRS recognizes dozens of different types of nonprofit organizations as 501(c)s, including some credit unions and insurers.

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.