By Dr. Jim Dahle, WCI Founder

Understanding how your income is taxed and how the tax brackets work will aid your tax planning and make for more informed, reasonable discussions of tax policy. Now with 2024 right around the corner and with inflation (perhaps) being tamed (at least somewhat), let's take a look at the new tax brackets and see how best you can plan for the new year.

Here's what to know as 2023 fades away and a new year begins.


Tax Brackets for 2024



For context, here were the tax brackets for 2023, via the IRS: Keep in mind that, thanks to inflation, the increase from 2022 to 2023 was huge.


federal tax brackets 2023


Here's how the tax brackets will change for 2024.


2024 federal tax bracket


The standard deduction has also been raised for 2024. Here's what it was in 2022.


standard deduction 2022


Here's what it was for 2023.


standard deduction 2023

And here's what it'll be for 2024.


2024 standard deduction taxes


So, from 2022 to 2023, there was a big increase, thanks to inflation. For 2024, though, the increase is more modest, similar to how much the 2024 retirement contribution limits increased.


People Don't Understand How Tax Brackets Work

One of the most interesting phenomena I've noticed over the years is that most people don't actually understand how tax brackets work, and they routinely overestimate how much they pay in taxes. For example, I put up a few Twitter polls a couple of years ago discussing tax brackets. Take a look:


understanding tax rate


Keep in mind, these are not opinion questions.

These questions actually have correct answers that can be easily calculated and, frankly, given how far apart the answers are from each other, pretty easily estimated. It's like asking “Is China closer to Vietnam, Switzerland, Cuba, or Tonga?” Yet only 27%-30% of people got the answers right. Sheer random chance would allow 25% of them to get it right. But what is more interesting is that 61%-73% of respondents OVERestimated the tax burden.

More information here:

You Should Do Your Own Taxes at Least Once – Here’s How I Do Mine

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Why People Don't Get Tax Brackets

There are a few reasons why people can't answer those questions right. I think I know why.


#1 People Don't Understand the Difference Between Marginal Tax Rates and Effective Tax Rates

Remember that your marginal tax rate, or tax bracket, is the rate at which your next dollar earned will be taxed. Your effective tax rate is the total tax paid divided by your total income. Your effective tax rate is always less than your marginal tax rate. Perhaps this is best illustrated by demonstrating how to come up with the right answer to the question.

If a married couple earns $100,000 in 2024 and takes no deductions besides the standard deduction, how much will they pay in federal income tax?

First, they subtract out the standard deduction of $29,200. That leaves $70,800. The first $23,200 is taxed at 10%, generating $2,320 in tax. That leaves $70,800 – $23,200 = $47,600. That $47,600 all falls within the 12% tax bracket, and so it is all taxed at 12%. $47,600 x 12% = $5,712. $2,320 + $5,712 = $8,032. $8,032/$100,000 = 8.03%. The numbers were different in 2022 and 2023 when we did these examples (8.5% in 2022, 8.23% in 2023, and now 8.03% for 2024 with owed taxes of $8,481 in 2022, $8,236 in 2023, and now $8,032 in 2024), because of the new tax bracket limits. But you get my point.


2024 tax bracket example


There are two key points here. The first is that there is a 0% bracket. Some of your income is not taxed at all. That might be the standard deduction. It might be itemized deductions. There might be some above-the-line deductions. Whatever. But anything you get a deduction for isn't taxed at all. It's in the “0% bracket.” Some critics on Twitter started listing all these other deductions that could be taken. However, all of those would have LOWERED the tax due. This is, in essence, the MAXIMUM tax paid on that income, not the minimum. So, most people still overestimated the tax due, even though I used the maximum tax possible in this situation.

2021 tax bracketsThe second is simply that being in the 12% bracket does not mean you pay 12% in taxes. You only pay taxes on the money in that bracket. You fill the brackets as you go. Otherwise, you would have paid $12,000 in taxes instead of $8,032. If you knew someone making $100,000 was in the 12% bracket, you should know that the answer to the question MUST be less than 12%. There is no reason whatsoever to guess a number higher than that.


#2 People Don't Understand the Difference Between Taxes Withheld and Taxes Paid

Most people are employees. They don't actually calculate how much tax they owe, and they don't send it to the IRS each quarter like business owners do. It is just pulled out of their paycheck by their employer before they get it. The newer withholding tables are more accurate than the older ones, but most employees still have more withheld than they actually owe. That's why they get these huge tax refunds every spring. That is another phenomenon I find interesting—just how bizarrely happy people are to loan money interest-free to their government. But I think it contributes to the idea that people think they pay a lot more in taxes than they do.


#3 People Don't Know What Federal Income Tax Is

There are also a lot of people who don't know the difference between all of the taxes we pay. Don't get me wrong: there are a lot of taxes. There are state and local income taxes. There are payroll taxes like Social Security tax, Medicare tax, one of the two types of Patient Protection and Affordable Care Act (PPACA) taxes, and unemployment tax. There are sales taxes and property taxes and gas taxes and inheritance taxes and estate taxes. I guess it should be no surprise that people cannot tell them apart. Several of these are also withheld from their paychecks (the state and local income taxes and payroll taxes like Social Security taxes, Medicare taxes, and one of the two PPACA taxes). In fact, some of those payroll taxes (and the other PPACA tax) even show up on their federal income tax return, further confusing the situation.

Most people DO pay significantly more than 8.03% of a $100,000 income in taxes but not in federal income taxes. The federal income tax is quite progressive (44% of people pay no federal income tax at all while others have marginal tax rates as high as 37%). However, there are other taxes that are not progressive. My state income tax in Utah is a flat tax, at least once you get past the deductions. Medicare tax is a flat tax—2.9% on all wage income, half from the employer and half from the employee. Social Security tax is also flat—12.4% on all wage income, half from the employer and half from the employee (but only up to an income of $160,200 in 2023 and $168,600 in 2024). After that, it goes to 0% (at least for the employee), thus becoming a regressive tax at upper incomes.

At any rate, people may not realize that the federal tax brackets only apply to federal income tax.


#4 People Think Everything Taken Out of Their Paycheck Is Tax

Even worse, some people just assume everything taken out of their paycheck before they get it is a tax. Including their retirement account contributions, their share of any life or health insurance premiums, or even court-ordered child support. Sorry, some of those are good things to pay, but they're not taxes, much less federal income taxes.


I think it is important to understand how our taxes, especially the largest one for most of us—the federal income tax—work. Knowing how they work will help you to better manage your own finances and to actually have intelligent discussions with others about government and tax policies.

What do you think? Why do you suppose most people couldn't answer the questions above correctly? Why is the tax code so mysterious to US citizens? Comment below!

[This updated post was originally published in 2020.]