What Is Personal FinanceA raise that pushes you into a higher tax bracket does not mean the government taxes your entire salary at that higher rate. That belief is one of the most common misunderstandings about the US tax system, and it leads people to turn down raises or bonuses out of fear the extra money will cost them more than it's worth. It won't. Here's how brackets work.
The core idea: brackets are marginal
The United States taxes income progressively at the federal level. Instead of one flat rate applied to your whole income, the tax code splits income into ranges, called brackets, and each bracket has its own rate. A higher rate only applies to the portion of income that falls inside that bracket, not to every dollar you earned.
Think of your income filling up a set of buckets, from the bottom up. The first bucket fills at the lowest rate. Once it's full, additional income spills into the next bucket, taxed at a higher rate, but only that spillover amount. The dollars already sitting in the lower bucket stay taxed at the lower rate.
An illustrative example (not real bracket numbers)
The numbers below are made up to demonstrate the mechanism. They are not this year's actual IRS brackets or rates. For current figures, check irs.gov or ask a tax professional.
Suppose a simplified tax system with two brackets:
- 10% on income from $0 to $50,000
- 20% on income above $50,000
Now suppose you earn $60,000 in a year. Someone unfamiliar with how brackets work might assume you owe 20% on the full $60,000, or $12,000. That's not how it works.
Instead:
- The first $50,000 gets taxed at 10%, for $5,000.
- The remaining $10,000 (the amount above $50,000) gets taxed at 20%, for $2,000.
- Total tax owed: $7,000.
You paid the higher 20% rate only on the $10,000 that exceeded the first bracket. The other $50,000 stayed at 10%, no matter how much you earned above that threshold.
Marginal rate vs. effective rate
Two different numbers describe your tax situation, and mixing them up is where the confusion starts.
Your marginal tax rate is the rate applied to your next dollar of income, the rate of the bracket you currently sit in. In the example above, someone earning $60,000 has a marginal rate of 20%, since that's the rate on any additional income they earn.
Your effective tax rate is your total tax bill divided by your total income. In the example, $7,000 divided by $60,000 works out to about 11.7%. That's the average rate across your whole income, and it's always lower than your marginal rate whenever more than one bracket applies, because part of your income got taxed at the lower rate first.
News coverage and casual conversation usually cite marginal rates, since that's the number tied to policy debates about the top bracket. Your effective rate is the more useful number for understanding what share of your income goes to federal tax.
Why this matters for decisions like raises and bonuses
Because only the income inside a higher bracket gets taxed at the higher rate, earning more never reduces your take-home pay. A raise that pushes part of your income into a higher bracket still leaves you with more money after tax than before the raise, since the higher rate only touches the new, higher slice of income. There's no dollar amount at which crossing into a new bracket makes you worse off overall.
The real brackets, thresholds, and rates change from year to year, and they also depend on your filing status, deductions, and credits, which the simplified example above ignores entirely. For the current numbers that apply to your situation, check irs.gov directly or talk to a licensed tax professional. Nothing in this article is tax advice.