The United States taxes money earned from work more heavily than money earned from owning things. A worker pays ordinary income tax rates on wages plus payroll taxes on top. An investor selling an asset held longer than a year pays a separate, lower schedule of rates and owes no payroll tax at all. Both people may deposit the same amount, and the one who worked for it keeps less.
How wage income gets taxed
Wages run through two systems at once. Federal income tax applies at graduated rates, rising through brackets as income increases. Then payroll taxes apply from the first dollar. The IRS puts the employee Social Security rate at 6.2 percent and the employee Medicare rate at 1.45 percent, for a combined 7.65 percent withheld from pay. Employers match both, contributing another 6.2 and 1.45 percent.
Economists generally treat the employer share as falling on the worker too, in the form of wages the employer would otherwise pay. On that reading, a wage earner faces about 15.3 percent in payroll tax before income tax applies. Self-employed people pay both halves directly and see the full amount on their return.
Social Security tax stops at a ceiling. For earnings in 2026 the IRS puts the Social Security wage base at $184,500, so income above that level escapes the 6.2 percent. Medicare tax has no ceiling. The practical effect is that the Social Security portion takes a larger share of a modest salary than of a large one.
How capital income gets taxed
Selling an asset held more than a year produces a long-term capital gain, taxed on its own schedule. For tax year 2025 the IRS set those rates at 0, 15 and 20 percent, with the tier depending on taxable income and filing status. A single filer with taxable income at or below $48,350 owed nothing on long-term gains that year, and the 20 percent rate applied only above $533,400.
Qualified dividends follow the same preferential schedule. Assets held a year or less produce short-term gains, which the IRS taxes as ordinary income at the regular graduated rates, so the holding period does most of the work in determining the rate.
No payroll tax applies to any of it. Capital gains, dividends, interest and rent carry no Social Security or Medicare obligation. An additional surtax does reach investment income above certain income thresholds, which narrows the gap at high incomes without closing it.
A side-by-side comparison
Take two people who each add $100,000 to their accounts in a year. The first earns it as salary. Payroll tax removes 7.65 percent as the employee share, leaving $92,350, and federal income tax then applies at graduated ordinary rates on the full $100,000. The second sells stock held for three years at a $100,000 long-term gain. No payroll tax applies, and if the gain lands in the 15 percent tier the federal bill is $15,000.
The gap widens with the size of the amount. The wage earner’s Social Security obligation caps out, but ordinary income rates climb into the highest brackets, while long-term gains top out at 20 percent plus the investment surtax. Someone whose income arrives entirely through appreciated assets can face a lower effective federal rate than a salaried professional earning considerably less.
Two features that matter more than the rates
Deferral is the first. A wage earner owes tax in the year the work happens, withheld from each paycheck. An asset owner owes nothing until a sale, so gains compound untaxed for as long as the owner holds. Decades of deferred tax on a growing position is worth more than a rate cut, and it is available only to people who own appreciating assets.
Stepped-up basis is the second. When someone inherits an asset, its cost basis resets to the value at the date of death, so the appreciation that accumulated during the original owner’s lifetime goes untaxed as a capital gain. A family passing down a long-held position can clear generations of growth without a capital gains event. Wages offer no equivalent.
What the arrangement produces
Federal Reserve data from the Survey of Consumer Finances shows asset ownership concentrated near the top of the distribution, with stock holdings far more concentrated than income. A tax code that favors asset income therefore favors the households already holding assets, and that advantage compounds over time through the deferral and basis rules above.
The gap also shapes behavior. High earners with discretion over how they are paid take compensation in equity rather than salary where they can, which is one reason executive packages tilt heavily toward stock. The Economic Policy Institute’s finding that chief executive pay at large firms runs roughly 290 to 340 times median worker pay reflects that structure as much as it reflects negotiation.
Meanwhile the wage side has not moved at the bottom. The federal minimum wage has stayed at $7.25 an hour since 2009, per the U.S. Department of Labor, and a worker at that rate pays the full 7.65 percent employee payroll share from the first hour.
The arguments on each side
Defenders of lower capital rates make three claims. Corporate profits already faced tax before reaching a shareholder, so the gains rate avoids taxing the same income twice. Lower rates encourage investment that funds business expansion. And because nominal gains include inflation, a lower rate roughly compensates for taxing increases that reflect no real gain.
Critics answer that the differential rewards ownership over work for no policy reason that survives scrutiny, that much investment would occur anyway, and that deferral plus stepped-up basis lets substantial amounts of appreciation escape income tax permanently. Fight For A Living Wage, a nonpartisan grassroots 501(c)(3), argues that American affordability problems run across housing, health care, childcare and education at once, and tax treatment of earned income is one of the levers in that broader picture.
Both arguments rest on real mechanics. What is not in dispute is the structure: wages carry two taxes, assets carry one, and the difference compounds for whoever owns enough to wait.
