By Christian BrinkleyLicensed NC Insurance Agent, NPN 22217190, NC Life & Health · Updated October 14, 2026 · 4 min read
Tax brackets confuse a lot of smart people. The confusion is understandable, because the way brackets get talked about is misleading. You will hear someone say “I am in the 22 percent bracket” and assume every dollar they earn gets taxed at 22 percent. That is not how it works. Not even close. Here is how it actually works. The tax system is split into chunks, and each chunk of your income gets taxed at its own rate. Only the income that falls inside a bracket gets taxed at that bracket's rate. The dollars below it get taxed at the lower rates.
Think of it like filling buckets
You pour your income in, and it fills the first bucket first. Every dollar in that bucket gets taxed at the lowest rate. When that bucket is full, the overflow goes into the next bucket, which has a slightly higher rate. Then the next, and the next. Your top bucket, the one your last dollar lands in, is your marginal tax rate. It is called marginal because it is the rate on the margin, on the next dollar.
Let me walk through a plain example. I am going to use made-up numbers on purpose, because real bracket cutoffs change every year. Check irs.gov for the current year's actual brackets.
That is the whole trick
Your “bracket” describes your last dollar, not your first dollar. Two people can both be “in the 25 percent bracket” and pay very different effective rates depending on how much of their income sits in each bucket.
The number people actually feel is the effective tax rate. That is your total tax divided by your total income. It is always lower than your marginal rate, because most of your income was taxed in the lower buckets. If someone tells you they pay 25 percent of their income in federal tax because they are in the 25 percent bracket, they are almost certainly wrong. Their effective rate is lower.
It also matters for deductions
A deduction saves you tax at your marginal rate, because it removes income from your top bucket. If your marginal rate is 22 percent, a thousand-dollar deduction saves you about two hundred and twenty dollars in tax. Same deduction, different bracket, different savings. This is why deductions are worth more to higher earners, which is a whole separate conversation about tax fairness.
A couple more things worth knowing
Brackets apply to ordinary income, which is wages, salaries, business income, that kind of thing. Investment income like long-term capital gains and qualified dividends gets its own separate set of rates. Do not mix the two up.
Brackets also differ by filing status. The cutoffs for a single filer are different from the cutoffs for someone married filing jointly. Same rates, different bucket sizes. And the cutoffs get adjusted most years for inflation, which is why you should always check the current year's numbers instead of memorizing old ones.
State taxes are a separate layer. Your state has its own brackets, or maybe a flat rate, or in a few states no income tax at all. The federal buckets and the state buckets do not interact. You figure each one on its own.
The practical takeaway is simple
When someone says “I am in the 22 percent bracket,” translate that in your head to “their next dollar gets taxed at 22 percent.” Most of their dollars were taxed at less. And when you are making a decision about extra income or a deduction, the marginal rate is the number that matters.
This is general information, not tax advice. Bracket cutoffs and rates change, so check irs.gov for the current year, and talk to a tax professional about your specific situation.
Questions people ask me about this
What should I know about tax brackets?
You pour your income in, and it fills the first bucket first. Every dollar in that bucket gets taxed at the lowest rate. When that bucket is full, the overflow goes into the next bucket, which has a slightly higher rate. Then the next, and the next. Your top bucket, the one your last dollar lands in, is your marginal tax rate.
What should I know about the whole trick?
Your “bracket” describes your last dollar, not your first dollar. Two people can both be “in the 25 percent bracket” and pay very different effective rates depending on how much of their income sits in each bucket. The number people actually feel is the effective tax rate. That is your total tax divided by your total income.
What does “think of it like filling buckets” mean?
You pour your income in, and it fills the first bucket first. Every dollar in that bucket gets taxed at the lowest rate. When that bucket is full, the overflow goes into the next bucket, which has a slightly higher rate. Then the next, and the next. Your top bucket, the one your last dollar lands in, is your marginal tax rate.
Get the next guide by email
New guides go out when they are published. No spam, no selling your address, unsubscribe any time.