Tax brackets are income ranges, each taxed at a different rate. The federal income tax system has seven brackets, with rates of 10%, 12%, 22%, 24%, 32%, 35%, and 37%. The key concept most people misunderstand: moving into a higher bracket does not mean all your income gets taxed at that higher rate. Only the income within each bracket is taxed at that bracket’s rate.
How Brackets Actually Work
The federal income tax is progressive, meaning your income is split into chunks, and each chunk is taxed at its own rate. Think of it like filling up buckets. Your first dollars of income fill the lowest bucket (10%), and only after that bucket is full does income spill into the next one (12%), and so on up through the rates.
Here’s a concrete example. Say you’re a single filer with $80,000 in taxable income for 2025. Your tax is not simply 22% of $80,000 ($17,600). Instead, you pay:
- 10% on the first $11,925: $1,192.50
- 12% on income from $11,926 to $48,475: $4,386
- 22% on income from $48,476 to $80,000: $6,935.28
Your total federal tax comes to about $12,514. That’s significantly less than the $17,600 you’d owe if the 22% rate applied to everything. This layered structure is what people mean when they say the tax system uses “marginal” rates.
Marginal Rate vs. Effective Rate
These two numbers describe very different things, and confusing them is one of the most common tax misunderstandings.
Your marginal tax rate is the rate on your last dollar of income. In the example above, that’s 22%, because the final portion of your $80,000 falls in the 22% bracket. This is the rate that matters most when you’re deciding whether to take on extra income, contribute more to a pre-tax retirement account, or claim a deduction. Every additional dollar you earn gets taxed at your marginal rate, and every dollar you deduct saves you taxes at that same rate.
Your effective tax rate is the percentage of your total income you actually paid in taxes. Using the same example, $12,514 divided by $80,000 equals about 15.6%. That’s your true tax burden, and it’s always lower than your marginal rate because of the progressive structure. When someone says “I’m in the 22% bracket,” they’re paying well under 22% on their full income.
2025 Tax Brackets by Filing Status
The dollar ranges for each bracket shift depending on how you file. Married couples filing jointly get brackets that are roughly double the width of single filer brackets at most levels, which means a couple can earn about twice as much before hitting a higher rate. Head of household filers, typically single parents or people supporting dependents, get brackets wider than single but narrower than married filing jointly.
For tax year 2025, the brackets for single filers are:
- 10%: $0 to $11,925
- 12%: $11,926 to $48,475
- 22%: $48,476 to $103,350
- 24%: $103,351 to $197,300
- 32%: $197,301 to $250,525
- 35%: $250,526 to $626,350
- 37%: $626,351 and above
For married couples filing jointly:
- 10%: $0 to $23,850
- 12%: $23,851 to $96,950
- 22%: $96,951 to $206,700
- 24%: $206,701 to $394,600
- 32%: $394,601 to $501,050
- 35%: $501,051 to $751,600
- 37%: $751,601 and above
For head of household filers:
- 10%: $0 to $17,000
- 12%: $17,001 to $64,850
- 22%: $64,851 to $103,350
- 24%: $103,351 to $197,300
- 32%: $197,301 to $250,500
- 35%: $250,501 to $626,350
- 37%: $626,351 and above
Taxable Income Is Not Your Paycheck
Brackets apply to your taxable income, not your gross salary. The difference matters. Before your income hits the bracket math, you subtract deductions. For 2025, the standard deduction is $15,000 for single filers and $30,000 for married couples filing jointly. If you earn $80,000 as a single filer and take the standard deduction, your taxable income drops to $65,000, putting the top slice of your income in the 22% bracket rather than higher.
Other deductions, whether from retirement contributions, student loan interest, or itemized deductions like mortgage interest and charitable giving, further reduce your taxable income. This is why two people with the same salary can land in different brackets.
Why a Raise Never Costs You Money
One of the most persistent tax myths is that earning more money can leave you worse off because it “bumps you into a higher bracket.” This is not how it works. Because only the income inside each bracket is taxed at that bracket’s rate, a raise always increases your take-home pay. If you’re a single filer earning $48,000 and you get a $5,000 raise, only the portion above $48,475 gets taxed at 22%. The rest of the raise stays in the 12% bracket. You keep the majority of every extra dollar.
There are rare situations where earning more can reduce eligibility for certain tax credits or income-based benefits, but the bracket system itself never penalizes you for earning more.
How Brackets Affect Financial Decisions
Knowing your marginal rate helps you estimate the real value of deductions and pre-tax contributions. If you’re in the 22% bracket and contribute $5,000 to a traditional 401(k), that contribution reduces your tax bill by about $1,100 (22% of $5,000). The same contribution saves $1,200 for someone in the 24% bracket and only $600 for someone in the 12% bracket.
This also affects decisions about Roth vs. traditional retirement accounts. With a traditional account, you deduct contributions now at your current marginal rate and pay taxes on withdrawals later. With a Roth, you pay taxes now and withdraw tax-free in retirement. If you expect to be in a lower bracket in retirement, a traditional account tends to save more. If you expect to be in a higher bracket later, the Roth often wins.
The IRS adjusts bracket thresholds each year for inflation, so the income ranges shift slightly upward over time. For 2026, the brackets keep the same seven rates but the thresholds rise modestly. The 22% bracket for single filers, for instance, will start at $50,400 instead of $48,476. These annual adjustments prevent inflation alone from pushing you into higher brackets.