Federal gross income is every dollar of economic gain you receive during the year, from any source, unless the tax code specifically excludes it. That’s the answer to what federal gross income is, and it explains why the list of things that count is so much longer than most people expect. Wages are obvious. So are business profits and interest on a savings account. Less obvious: a forgiven credit card balance, the fair market value of a car you won in a raffle, the crypto you were paid in for freelance work, and the trade value of services you bartered instead of billing for. If you ended the year richer and no exclusion applies, the gain belongs on your return.
The Legal Test
Section 61 of the Internal Revenue Code defines gross income as “all income from whatever source derived.”1Office of the Law Revision Counsel. 26 USC 61 – Gross Income Defined The IRS doesn’t need to name every possible type of income for it to be taxable. The default is that everything counts, and Congress carves out exceptions one at a time.
The Supreme Court gave the definition its working shape in Commissioner v. Glenshaw Glass Co. (1955), holding that gross income covers any “undeniable accessions to wealth, clearly realized, and over which the taxpayers have complete dominion.”2Library of Congress. US Reports: Commissioner v. Glenshaw Glass Co., 348 US 426 (1955) Three conditions have to line up: you gained something of value, you actually received or controlled it, and the gain is real rather than speculative. That test is why a loan isn’t income (you owe the money back, so there’s no net gain), but a forgiven loan usually is.
Income That’s Included
Wages and Compensation From Work
For most people, the biggest piece of gross income is what they earn on the job: base salary, hourly wages, commissions, bonuses, and tips.3Internal Revenue Service. Publication 525 (2025), Taxable and Nontaxable Income Your employer reports these amounts on Form W-2, and the same numbers go to the IRS so they can be matched against your return.4Internal Revenue Service. About Form W-2, Wage and Tax Statement
Non-cash compensation counts, too. Personal use of a company car is a taxable fringe benefit added to your income.5Internal Revenue Service. What Is Taxable and Nontaxable Income Stock options, housing allowances, and other perks are handled the same way unless a specific exclusion applies.
Investment and Rental Income
Interest from bank accounts, dividends from stocks, and capital gains from selling real estate or securities are all part of gross income.3Internal Revenue Service. Publication 525 (2025), Taxable and Nontaxable Income Rental income from property you own and royalties from patents, mineral rights, or intellectual property belong here as well.5Internal Revenue Service. What Is Taxable and Nontaxable Income
Business Income
If you run a business, your gross income from it is total receipts minus the cost of goods sold. That figure goes on your return even if you reinvest every dollar back into the business.1Office of the Law Revision Counsel. 26 USC 61 – Gross Income Defined
Retirement Distributions
Money coming out of a traditional IRA, 401(k), or similar retirement account is generally part of your gross income for the year you take it. Withdrawals before age 59½ typically owe an additional 10% tax on top of the regular income tax.6Internal Revenue Service. IRA FAQs – Distributions Withdrawals Roth IRA distributions work differently. Because you contributed after-tax dollars, qualified Roth distributions are not part of gross income at all, provided the account has been open at least five years and you’re at least 59½.7Internal Revenue Service. Roth IRAs
Canceled and Forgiven Debt
When a lender forgives a debt, the IRS generally treats the forgiven amount as income. You received money, you were supposed to pay it back, and now you don’t have to. That’s a real economic gain. The lender will usually report the amount on Form 1099-C, but you owe the tax whether or not you receive the form.8Internal Revenue Service. Publication 4681 (2025), Canceled Debts, Foreclosures, Repossessions, and Abandonments
Several exceptions matter. Debt discharged in a Title 11 bankruptcy is excluded. So is canceled debt up to the amount by which you were insolvent (liabilities exceeded assets) immediately before cancellation. Both require you to file Form 982 with your return.8Internal Revenue Service. Publication 4681 (2025), Canceled Debts, Foreclosures, Repossessions, and Abandonments Qualified farm indebtedness and qualified real property business indebtedness have their own exclusions.9Office of the Law Revision Counsel. 26 US Code 108 – Income From Discharge of Indebtedness The exclusion for discharged mortgage debt on a principal residence expired at the end of 2025, so for the 2026 tax year, forgiven mortgage debt on your home is generally taxable.
Social Security Benefits
Some or all of your Social Security benefits can be pulled into gross income, depending on your total income from other sources. For a single filer whose combined income (AGI plus nontaxable interest plus half of benefits) is between $25,000 and $34,000, up to 50% of benefits may be taxable. Above $34,000, up to 85% can be included. For married couples filing jointly, the tiers run $32,000 to $44,000 (up to 50%) and above $44,000 (up to 85%).10Internal Revenue Service. IRS Reminds Taxpayers Their Social Security Benefits May Be Taxable These thresholds are set by statute and aren’t adjusted for inflation.11Office of the Law Revision Counsel. 26 USC 86 – Social Security and Tier 1 Railroad Retirement Benefits
Prizes, Gambling, and Punitive Damages
The fair market value of a casino jackpot, a game show prize, or a raffle car is gross income.3Internal Revenue Service. Publication 525 (2025), Taxable and Nontaxable Income Win a $40,000 car, owe income tax on $40,000, even if you keep it. Punitive damages from a lawsuit are taxable too, even when the underlying case involved a physical injury.12Office of the Law Revision Counsel. 26 US Code 104 – Compensation for Injuries or Sickness
Bartering
Trading services or goods instead of paying cash is still a taxable transaction. The fair market value of what you receive is gross income. A plumber who fixes an electrician’s pipes in exchange for rewiring work has income equal to the value of the electrical services received. Barter exchanges report the transactions to the IRS on Form 1099-B.13Internal Revenue Service. Topic No. 420, Bartering Income
Unemployment Compensation
Unemployment benefits are fully taxable at the federal level. You’ll receive Form 1099-G showing the total paid to you during the year. No tax is withheld automatically, so you can submit Form W-4V to request voluntary withholding or make quarterly estimated payments to avoid a surprise bill.14Internal Revenue Service. Unemployment Compensation
Digital Assets
The IRS classifies cryptocurrency and other digital assets as property, not currency. Selling, exchanging, or spending them on goods triggers the same capital gain or loss rules that apply to stock. If you receive digital assets as payment for work or services, the fair market value at the time you receive them is ordinary income.15Internal Revenue Service. Digital Assets
Income From Illegal Activities
Gains from illegal activities are gross income. The Glenshaw Glass test doesn’t care whether the source is legal. Embezzlement proceeds, drug sales, and other illicit earnings are all taxable, and the IRS expects them to be reported.
If You Live Abroad
U.S. citizens and resident aliens owe federal income tax on worldwide income, regardless of where they live or where the income was earned. The filing requirements are the same as they are for people living in the United States.16Internal Revenue Service. US Citizens and Residents Abroad – Filing Requirements The foreign earned income exclusion can reduce the tax bite: for 2026, you can exclude up to $132,900 of foreign earned income if you meet either the bona fide residence test or the physical presence test.17Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 The foreign tax credit is a separate mechanism that prevents the same income from being taxed twice by two countries.
Income That’s Excluded by Statute
The default is that everything is income. Everything below is a specific statutory exception. If a type of receipt isn’t listed in the code as excluded, it’s taxable.
Gifts and Inheritances
Property received as a gift, bequest, or inheritance is not part of the recipient’s gross income.18Office of the Law Revision Counsel. 26 USC 102 – Gifts and Inheritances The tax obligation falls on the donor (through the gift tax) or the estate (through the estate tax). Any income the property generates after you receive it — interest, dividends, rent — is your taxable income going forward.
Life Insurance Death Benefits
Amounts paid under a life insurance contract because of the insured person’s death are excluded from the beneficiary’s gross income, whether the payout comes as a lump sum or in installments.19Office of the Law Revision Counsel. 26 USC 101 – Certain Death Benefits Narrow exceptions exist, including policies that were transferred to a new owner for valuable consideration, but most life insurance payouts to a named beneficiary are tax-free.
Employer-Provided Health Insurance
Employer contributions toward your health insurance premiums are excluded from your gross income.20Office of the Law Revision Counsel. 26 US Code 106 – Contributions by Employer to Accident and Health Plans This is one of the largest exclusions in the federal system. The portion of premiums you pay through payroll deductions is typically excluded as well when your employer runs a Section 125 cafeteria plan.
Group-Term Life Insurance Up to $50,000
The cost of the first $50,000 of employer-provided group-term life insurance is excluded from your income. Coverage above that threshold generates imputed income: your employer adds the cost of the excess coverage to your W-2 using IRS premium tables, even though you never see the money as cash.21Internal Revenue Service. Group-Term Life Insurance
Workers’ Compensation and Physical Injury Damages
Workers’ compensation for job-related injuries or illness is excluded. Damages received in a lawsuit or settlement for personal physical injuries or physical sickness are also excluded, as long as they aren’t punitive damages.12Office of the Law Revision Counsel. 26 US Code 104 – Compensation for Injuries or Sickness Settle a slip-and-fall case for $100,000 in compensatory damages and that amount is excluded. Add $50,000 in punitive damages and the punitive portion is taxable. Emotional distress by itself is not treated as a physical injury, so damages for pure emotional distress are taxable unless they don’t exceed the amount you paid for related medical care.
Qualified Scholarships
Scholarships used for tuition, fees, books, supplies, and required equipment at a degree-granting institution are excluded.22Office of the Law Revision Counsel. 26 USC 117 – Qualified Scholarships The word “qualified” is doing work here. Scholarship money that covers room, board, or other living expenses is taxable. Stipends paid in exchange for teaching or research services are taxable even if your school calls them fellowships.
Municipal Bond Interest
Interest earned on bonds issued by state and local governments is generally excluded from federal gross income.23Office of the Law Revision Counsel. 26 USC 103 – Interest on State and Local Bonds Certain private activity bonds don’t qualify, and interest from some tax-exempt bonds may still trigger the alternative minimum tax.
Child Support and Post-2018 Alimony
Child support is never part of the recipient’s gross income and is never deductible by the payer. For divorce or separation agreements executed after December 31, 2018, alimony is treated the same way: the recipient doesn’t report it as income, and the payer can’t deduct it.24Internal Revenue Service. Topic No. 452, Alimony and Separate Maintenance Agreements executed before 2019 still follow the previous rules, under which alimony was deductible by the payer and taxable to the recipient, unless the agreement has since been modified to adopt the new treatment.
When Income Counts
Most individuals are cash-basis taxpayers, reporting income in the year it’s received and deducting expenses in the year they’re paid. A December paycheck that arrives in January is generally reported in January.
The IRS applies a doctrine called constructive receipt to keep people from gaming the timing. Income is considered received when it’s credited to your account, set apart for you, or otherwise made available so that you could draw on it, even if you choose not to.25eCFR. 26 CFR 1.451-2 – Constructive Receipt of Income You can’t push income into next year by ignoring a check in your mailbox or refusing to cash a dividend. The exception is a genuine restriction on access, like a certificate of deposit that hasn’t matured.
From Gross Income to Your Tax Bill
Gross income is the starting line, not the finish. After you total everything included and remove everything excluded, you apply “above-the-line” adjustments to arrive at adjusted gross income (AGI). Common adjustments include deductions for student loan interest, contributions to a traditional IRA, and educator expenses.26Internal Revenue Service. Adjusted Gross Income
AGI is one of the most important numbers on your return because it drives eligibility for many credits and deductions. From AGI, you subtract either the standard deduction or your itemized deductions to arrive at taxable income, which is the number that actually gets multiplied by your tax rate. A high gross income doesn’t automatically mean a high tax bill.
Penalties for Leaving Income Off
The IRS imposes a 20% accuracy-related penalty on the portion of any underpayment caused by negligence or a substantial understatement of income tax.27Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments That’s on top of the tax you already owe, plus interest.
Willful tax evasion is a felony. A conviction can carry up to five years in prison and a fine of up to $100,000 for individuals ($500,000 for corporations), plus the costs of prosecution.28Office of the Law Revision Counsel. 26 US Code 7201 – Attempt to Evade or Defeat Tax The IRS distinguishes between honest mistakes and deliberate concealment, but even careless errors on items like canceled debt, gambling winnings, or cryptocurrency gains can trigger the accuracy-related penalty. If a payment came your way this year and you’re not sure whether it counts, the safer assumption is that it does, until you find the specific exclusion that says otherwise.