What Is Considered Income for Tax Purposes?

For federal tax purposes, income is any clear increase in wealth you actually control, and it is taxable unless a specific provision in the tax code says otherwise. That is the rule Congress wrote into 26 U.S.C. § 61, which defines gross income as “all income from whatever source derived,” and the Supreme Court has read that language as broadly as the Constitution allows.¹ Paychecks are the obvious example, but the definition sweeps in interest, rent, business profits, retirement withdrawals, canceled debts, gambling winnings, and even the fair market value of services you receive by barter. The default assumption at the IRS is that a receipt is taxable; the burden is on you to identify an exclusion.

Wages, Salaries, and Compensation for Services

Compensation for services is the broadest and most common category. It covers wages, salaries, tips, commissions, bonuses, professional fees, and severance, whether you are a salaried employee or an independent contractor.¹ Fringe benefits such as a company car or an employer-paid gym membership are also compensation unless a specific exclusion applies.

Employers report wages on Form W-2. For 2026, businesses that pay an independent contractor $2,000 or more during the year must issue Form 1099-NEC, a threshold that rose from $600 under prior law.² That change affects paperwork, not taxability. Earn $500 from a freelance client with no 1099 in the mail, and you still owe tax on it.

One large exclusion sits quietly inside this category. If your employer pays for your accident or health insurance coverage, those premiums are not treated as wages and are not subject to income tax or payroll tax withholding.³ It never shows up on your pay stub as income, which is why most workers do not realize how much tax-free compensation they receive.

Investment Income and Capital Gains

Money your money earns is taxed, but the rate depends on the form. Interest from bank accounts, certificates of deposit, and private loans is ordinary income, taxed at your regular bracket rate.¹ Even a few dollars of savings-account interest belongs on your return.

Dividends split in two. Ordinary dividends are taxed at ordinary rates. Qualified dividends get the preferential capital gains rates of 0%, 15%, or 20% depending on your taxable income.⁴ Your brokerage identifies which is which on the Form 1099-DIV it sends in January.

Capital gains arise when you sell an asset for more than your cost basis. Assets held longer than one year qualify for the same preferential rates as qualified dividends. Assets held a year or less are taxed as ordinary income. When capital losses exceed gains for the year, you can deduct up to $3,000 of the excess against other income, or $1,500 if married filing separately, and carry the remainder forward.⁵

Cryptocurrency and Digital Assets

Cryptocurrency is not currency for tax purposes. The IRS treats digital assets as property, so selling, exchanging, or spending crypto triggers the capital gains rules that apply to stock.⁶ Held more than a year, the gain is long-term. Held a year or less, it is short-term. Receiving crypto as payment is ordinary income at the token’s fair market value on the day you receive it, and mining and staking rewards follow the same rule.

Business, Self-Employment, and Rental Income

Gross income from a business you run is taxable, calculated as total receipts minus the cost of goods sold.¹ Good records matter because the IRS penalizes underpayment far more aggressively than it corrects overpayment.

If you are self-employed, income tax is only part of what you owe. Self-employment tax funds Social Security and Medicare at a combined 15.3%: 12.4% Social Security on net earnings up to the 2026 wage base of $184,500, and 2.9% Medicare on all net earnings.⁷ Earnings above $200,000 (or $250,000 for joint filers) carry an additional 0.9% Medicare surtax. Half of the self-employment tax you pay is deductible when computing adjusted gross income.⁸

Rental income is taxable too, including advance rent and any fee a tenant pays to break a lease.¹ If a tenant does work in lieu of paying cash, the fair market value of that labor counts as rent. Landlords can offset rental receipts with deductions for mortgage interest, repairs, depreciation, and operating expenses, but the gross figure is where you start.

Retirement Distributions and Social Security

Distributions from a traditional IRA, 401(k), or similar employer plan are ordinary income in the year you receive them.⁹ If every contribution was deductible, every dollar out is taxable. If you made after-tax or nondeductible contributions, a portion of each withdrawal is a tax-free return of that money. Most account holders must begin required minimum distributions at age 73.¹⁰

Roth IRAs work in reverse. Contributions go in after tax, and qualified distributions come out tax-free.¹⁰ “Qualified” means the account has been open at least five tax years and you are at least 59½ or meet another qualifying event, such as disability or a first-time home purchase up to $10,000. Nonqualified withdrawals may be taxable and may carry an early distribution penalty. Roth IRAs are not subject to lifetime required minimum distributions.

Social Security benefits can be partially taxable based on “combined income,” which is adjusted gross income plus nontaxable interest plus half of your benefit. For single filers, benefits start being taxed once combined income exceeds $25,000, and up to 85% of benefits are taxable above $34,000. For married couples filing jointly, the thresholds are $32,000 and $44,000.¹¹ Those numbers have not moved since 1993.

For tax years 2025 through 2028, the One, Big, Beautiful Bill Act created a new above-the-line deduction of up to $4,000 for taxpayers age 65 and older, intended to offset Social Security taxation. It phases out at higher incomes.¹²

Non-Cash Payments and Barter

Income does not have to arrive as cash. Treasury regulations state that gross income includes income realized in any form, whether money, property, or services.¹³ Paid in stock, or in a painting from a client? You report the fair market value of what you received.

Barter works the same way. When two people swap services, each reports the fair market value of what they got.¹⁴ A plumber who fixes a dentist’s pipes in exchange for a filling reports the value of the dental work, and the dentist reports the value of the plumbing. No cash changed hands. Both got richer.

Income People Often Forget to Report

Several items catch filers off guard because they do not feel like earnings.

Gambling and Prize Winnings

All gambling winnings are taxable: casinos, lotteries, sports bets, raffles. When net winnings from sweepstakes, wagering pools, lotteries, or sports wagers exceed $5,000, the payer withholds 24% for federal tax before paying you.¹⁵ Prizes and awards follow the same logic. Win a car on a game show, and you owe tax on its fair market value.

Canceled Debt

When a lender forgives what you owe, the canceled amount is generally income. Lenders issue Form 1099-C for forgiven debts of $600 or more.¹⁶ If you were insolvent immediately before the cancellation (total liabilities exceeded fair market value of total assets), you can exclude the canceled amount up to the amount of your insolvency.

Unemployment Compensation

Unemployment benefits are fully taxable federally.¹⁷ You can elect voluntary withholding to avoid a surprise bill at filing time, but many recipients skip it and owe money in April.

Alimony

Alimony under a divorce or separation agreement executed after December 31, 2018, is not income to the recipient and not deductible by the payer.¹⁸ Agreements finalized before 2019 keep the old rules: recipient reports the income, payer takes the deduction. The execution date of your agreement decides which regime applies.

Treasure Trove and Illegal Income

Federal regulations count “treasure trove” as gross income in the year you take undisputed possession of it.¹⁹ Cash you find in a wall during a renovation is taxable. So are illegal gains from embezzlement, theft, or fraud. Courts have long used tax evasion charges to prosecute people when the underlying crime is harder to prove.

What Is Not Considered Income

The exclusions matter as much as the inclusions, because reporting an excluded receipt as income means overpaying. Some common items federal law leaves out of gross income:

Gifts and inheritances are not taxable to the recipient. The tax responsibility, if any, sits with the giver. For 2026, an individual can give up to $19,000 per recipient before the amount counts against the giver’s lifetime estate and gift tax exemption.¹²
Life insurance death benefits paid to a beneficiary are excluded from gross income, whether paid to a person, an estate, or a trust.
Workers’ compensation payments for personal injuries or sickness are excluded from gross income.²⁰
Compensatory damages for personal physical injuries or physical sickness are excluded, including any lost-wages portion. Punitive damages are always taxable.²⁰
Qualified scholarship funds used for tuition, required fees, books, and supplies at a degree-granting institution are tax-free. Amounts used for room and board or travel are taxable, and scholarship money paid for teaching or research is compensation.²¹
Interest on bonds issued by state and local governments is generally excluded from federal income tax, though private activity bonds and arbitrage bonds may lose the exclusion.²²
Child support payments are not taxable income to the recipient.
Loan proceeds are not income, because you have an offsetting obligation to repay. A forgiven loan, however, becomes canceled debt under the rules above.

The default cuts against you: if you received something of value and cannot point to a specific exclusion, treat it as taxable until you confirm otherwise.

1
Office of the Law Revision Counsel. 26 USC 61 – Gross Income Defined
2
Internal Revenue Service. 2026 Publication 1099
3
Internal Revenue Service. Employee Benefits
4
Internal Revenue Service. Topic No 404, Dividends and Other Corporate Distributions
5
Office of the Law Revision Counsel. 26 USC 1211 – Limitation on Capital Losses
6
Internal Revenue Service. Digital Assets
7
Internal Revenue Service. Topic No 751, Social Security and Medicare Withholding Rates
8
Internal Revenue Service. Topic No 554, Self-Employment Tax
9
Internal Revenue Service. Publication 590-B, Distributions From Individual Retirement Arrangements
10
Internal Revenue Service. Retirement Plan and IRA Required Minimum Distributions FAQs
11
Internal Revenue Service. IRS Reminds Taxpayers Their Social Security Benefits May Be Taxable
12
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026, Including Amendments From the One, Big, Beautiful Bill
13
eCFR. 26 CFR 1.61-1 – Gross Income
14
Internal Revenue Service. Bartering and Trading – Each Transaction Is Taxable to Both Parties
15
Internal Revenue Service. Instructions for Forms W-2G and 5754 (01/2026)
16
Internal Revenue Service. Publication 4681, Canceled Debts, Foreclosures, Repossessions, and Abandonments
17
Internal Revenue Service. Topic No 418, Unemployment Compensation
18
Internal Revenue Service. Divorce or Separation May Have an Effect on Taxes
19
eCFR. 26 CFR 1.61-14 – Miscellaneous Items of Gross Income
20
Office of the Law Revision Counsel. 26 USC 104 – Compensation for Injuries or Sickness
21
Internal Revenue Service. Topic No 421, Scholarships, Fellowship Grants, and Other Grants
22
Office of the Law Revision Counsel. 26 USC 103 – Interest on State and Local Bonds