Why are my bonuses taxed at nearly 40% when my regular tax rate is only 24%?!
Just got my end-of-year bonus and I'm pretty upset about how much was taken out for taxes. It looks like they withheld almost 40% when my normal tax bracket is only 24%! I thought I was going crazy so I did some research and found that supplemental income is supposed to be taxed at a flat 22% rate? So why am I seeing almost 40% gone from my bonus check? I'm not a tax expert by any means, but I swear my coworker mentioned his bonus only had like 25% taken out. Is the extra withholding because of my income level or something? Or is my company just withholding incorrectly? If supplemental income is taxed at 22%, is that on top of my regular income tax rate? That would explain the higher percentage but seems excessive. Just trying to understand what's happening with my hard-earned money and if I'll get any of this back when I file my taxes next year.
27 comments


StarStrider
The good news is you're probably getting most of that extra withholding back when you file your taxes! What you're seeing is withholding, not your actual tax rate. Employers typically have two options for withholding taxes on bonuses: the percentage method (flat 22% federal withholding for most bonus amounts) or the aggregate method (temporarily adding your bonus to your regular paycheck and calculating withholding as if that larger amount was your regular pay). It sounds like your employer is using the aggregate method, which often results in higher withholding. The aggregate method can push your withholding into higher brackets temporarily, making it seem like you're being taxed at 40%. But remember, when you file your taxes, your bonus is just added to your regular income and taxed at your normal progressive rates. If too much was withheld, you'll get it back as a refund. You'll also have Social Security (6.2%), Medicare (1.45% plus possible additional 0.9% for high earners), and state taxes on top of federal - which can bring the total withholding to around 35-40%.
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Sean Doyle
•Wait - so are you saying my company isn't doing anything wrong by withholding 40%? Is there any way I can ask them to use the 22% flat rate method instead? That's a huge difference in my take-home pay right now when I need it for holiday expenses. Also, if they're calculating it wrong, do I have to wait until I file taxes to get that money back or can I fix it now?
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StarStrider
•Your company isn't necessarily doing anything wrong - they're allowed to use either withholding method. Some payroll systems default to the aggregate method because it's easier to implement. You can certainly ask your payroll department if they'd consider using the flat rate method for future bonuses, but they aren't required to change their system. Unfortunately, if too much has already been withheld, you'll generally need to wait until you file your tax return to get that money back as part of your refund. If you're getting another bonus soon, you could try adjusting your W-4 to temporarily reduce withholding on your regular paychecks to offset the high bonus withholding, but be careful not to underwithhold for the year.
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Zara Rashid
I went through the exact same frustration last year with my holiday bonus! After hours of research and calling the IRS (which was useless), I finally found taxr.ai (https://taxr.ai) which explained exactly what was happening with my withholding. Turns out my employer was using the aggregate method instead of the flat rate, which is why nearly 40% was missing from my check. The tool analyzed my paystub and explained that while my money was being withheld at what seemed like 40%, it would actually be taxed at my normal bracket when I filed. The site has a bonus tax calculator that showed me exactly how much I'd get back at tax time. It was seriously a relief to understand what was happening.
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Luca Romano
•How accurate was the calculator though? Did what you actually got back match what taxr.ai predicted? My bonus is getting destroyed by taxes too and I'm trying to figure out if I need to adjust my budget for the next few months.
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Nia Jackson
•Does it actually explain the tax laws behind all this or just give you numbers? I'm trying to understand WHY this is happening more than just figuring out how much I'll get back.
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Zara Rashid
•The calculator was surprisingly accurate - it was within about $50 of my actual refund amount. I was skeptical at first too, but their estimate helped me plan my finances better knowing I'd get most of that money back after filing. The site actually does explain the tax laws behind bonus withholding. They break down the difference between the percentage method and aggregate method, plus they explain how your bonus ultimately gets taxed as regular income when you file your return. It helped me understand that the high withholding wasn't actually my final tax rate on that money.
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Nia Jackson
Just wanted to follow up and say I tried taxr.ai after seeing the recommendation here. It was super helpful! I uploaded my last paystub with my bonus and it showed me exactly why so much was withheld. Turns out my company uses the aggregate method that pushes withholding way higher than necessary. The breakdown showed that about 12% of what was withheld was actually just temporary and I'll get it back at tax time. I also learned I could adjust my W-4 to compensate for the extra withholding so I'm not giving the government an interest-free loan until April. Already submitted the new W-4 to HR today!
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Mateo Hernandez
After dealing with this bonus withholding issue last year, I spent WEEKS trying to call the IRS to figure out if I could get any of that money back sooner. I literally could not get through to a human being no matter what time I called. Finally tried Claimyr (https://claimyr.com) - they got me connected to an actual IRS agent in about 20 minutes. The agent confirmed that while my employer was withholding at nearly 40%, I'd get the excess back when filing, and recommended adjusting my W-4 for the rest of the year. You can see how it works here: https://youtu.be/_kiP6q8DX5c It saved me days of frustration and busy signals, and the IRS agent was actually really helpful once I could actually talk to someone!
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CosmicCruiser
•I'm confused - how does this actually work? Does Claimyr just call the IRS for you or what? The IRS hold times are insane but paying someone else to wait on hold seems weird.
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Aisha Khan
•Yeah right. No way you got through to the IRS in 20 mins during tax season. I've been trying for 3 weeks and can't even get placed on hold - just get disconnected. Sounds like a scam to me.
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Mateo Hernandez
•It doesn't call for you - it puts you in line and then calls you back when an IRS agent is about to pick up. Their system navigates the phone tree and waits on hold so you don't have to. When an agent is about to answer, you get a call and are connected directly to them. I was super skeptical too! I tried calling the IRS for three days straight with no luck before trying this. I think they use some kind of technology that keeps redialing and navigating the system until they get through. I was connected with an agent in 23 minutes according to my call log. This was in February too, right in the middle of tax season. I was shocked it actually worked.
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Aisha Khan
I have to eat my words and apologize to Profile 20. I was so frustrated after weeks of trying to reach the IRS that I lashed out. After seeing your response, I decided to try Claimyr as a last resort, fully expecting to be disappointed again. I got connected to an IRS agent in 17 minutes! The agent confirmed that my bonus withholding (which was 38% in my case) was just temporary and explained how to adjust my W-4 to offset the overwithholding for the rest of the year. Just submitted the new form to HR and should see the difference in my next paycheck. Sorry for being so negative before - I guess I was just fed up with the whole situation.
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Ethan Taylor
I've been dealing with this bonus tax situation for years and here's what I've learned: - Federal flat rate for bonus withholding is 22% (up to $1M, then 37%) - Add 6.2% Social Security + 1.45% Medicare - Add state income tax (varies by state, can be 5-10%) - Possible local taxes depending on your city So that can easily hit 35-40% total withholding without anything being wrong. The ACTUAL tax you pay on your bonus is just your marginal rate when you file, but the withholding often looks worse. I've started adjusting my W-4 right before bonus season to reduce the hit.
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Yuki Ito
•What exactly do you put on your W-4 to adjust for the bonus? I've looked at the form but it's not clear what numbers to change to fix this specific issue.
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Ethan Taylor
•I increase my withholding allowances temporarily by filling out Step 4(b) on the W-4 with an amount that roughly offsets the extra withholding. For example, if you expect about $2,000 in over-withholding from your bonus, you could put $4,000 in Step 4(b) to reduce your withholding by about $2,000 over the next few paychecks. Just remember to submit a new W-4 afterward to set things back to normal, or you might end up owing taxes next year. Some people also just adjust their withholding for the whole year if they know exactly when their bonus is coming.
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Carmen Lopez
If your employer uses the percentage method (22% flat withholding), why would the total still be close to 40%? Is that just from adding state and FICA taxes?
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Andre Dupont
•Yep, it adds up fast! 22% federal + 6.2% Social Security + 1.45% Medicare + state tax (which can be 5-9% depending on where you live) + possible local city taxes + any 401k or other deductions. I'm in California and my bonus withholding hits about 38% total.
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The Boss
The confusion here is totally understandable! What you're experiencing is the difference between withholding and actual tax liability. Your employer is likely using the "aggregate method" where they temporarily combine your bonus with your regular pay and calculate withholding as if that inflated amount was your normal salary - which pushes the withholding calculation into higher tax brackets. But here's the key: when you file your actual tax return, your bonus is just added to your regular income and taxed at your normal progressive rates (so likely that 24% marginal rate you mentioned). The "extra" withholding becomes a refund. Think of it this way: if your regular salary puts you in the 24% bracket, your bonus will mostly be taxed at 24% too (unless it's large enough to push some of it into the next bracket). The 40% withholding is just the government being overly cautious and taking too much upfront. You can ask your payroll department if they'll switch to the flat 22% percentage method for future bonuses, or temporarily adjust your W-4 to reduce withholding on regular paychecks to offset the over-withholding. Either way, you'll get the excess back when you file your return!
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Kaylee Cook
This is such a common source of confusion! I went through the exact same panic when I saw my bonus withholding last year. Just to add another perspective - if you're in a high-cost-of-living area, don't forget about state disability insurance (SDI) and any local taxes that might be getting withheld too. In my state, we have an additional 1% SDI tax that only applies to the first $150k or so of income, but it still gets taken out of bonuses. Also, if you're contributing to a 401k, HSA, or have other pre-tax deductions, those percentages get calculated on your gross bonus amount before those deductions, which can make the tax withholding look even higher as a percentage of your take-home. The good news is that once you understand the system, you can plan for it. I now set aside money knowing my bonus will be "short" due to over-withholding, and treat the tax refund as a nice surprise in the spring. Some people prefer to adjust their W-4 to get the money throughout the year instead of waiting for the refund.
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Javier Cruz
•This is really helpful! I never thought about how pre-tax deductions would affect the percentage calculation. That probably explains why my withholding looked even worse than I expected - I contribute pretty heavily to my 401k and have HSA deductions too. Quick question about adjusting the W-4 to get the money throughout the year instead of waiting for a refund - how do you calculate how much to adjust it by? I'd rather have the money in my regular paychecks than give the government an interest-free loan, but I'm worried about accidentally under-withholding and owing money at tax time.
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Mei Chen
•Great question! The safest approach is to calculate the estimated over-withholding from your bonus and then spread that amount across your remaining paychecks for the year. For example, if your bonus had $3,000 over-withheld and you have 10 paychecks left in the year, you'd want to reduce your withholding by about $300 per paycheck. On the W-4, you'd put $6,000 in Step 4(b) (deductions) since that roughly translates to $300 less withholding per paycheck at most tax brackets. The IRS withholding calculator on their website is actually pretty helpful for this - you can input your YTD earnings including the bonus and it'll suggest W-4 settings to get you close to even for the year. Just make sure to reset your W-4 back to normal at the start of the next year, or you'll end up under-withholding! I set a calendar reminder every January to review my W-4 settings. Also keep in mind that if you get another bonus later in the year, you might need to adjust again.
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Felicity Bud
I completely understand your frustration! This is one of the most confusing aspects of payroll taxes. What you're seeing is actually pretty normal, unfortunately. The key thing to remember is that your bonus isn't actually being "taxed" at 40% - that's just the withholding rate. When you file your taxes, the bonus gets added to your regular income and taxed at your normal marginal rates (so likely closer to that 24% you mentioned). The reason you're seeing such high withholding is probably because your employer is using the "aggregate method" - they temporarily add your bonus to your regular paycheck and calculate withholding as if that huge amount was your normal salary. This pushes the withholding calculation into higher tax brackets temporarily. On top of the federal withholding, you've also got: - Social Security tax (6.2%) - Medicare tax (1.45%, plus potentially 0.9% additional if you're a high earner) - State income tax (varies by state) - Possibly local/city taxes - Any pre-tax deductions like 401k contributions All of this can easily add up to that 35-40% total withholding you're seeing. The good news is you'll likely get a nice chunk of that back as a refund when you file your taxes. You can also ask your payroll department if they'd consider using the flat 22% percentage method for future bonuses, or temporarily adjust your W-4 to reduce regular paycheck withholding to offset the over-withholding from your bonus.
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Jamal Edwards
•This is such a clear explanation! I've been stressing about this for weeks thinking my company was making some kind of mistake with my withholding. It's actually kind of relieving to know that 35-40% total withholding is normal when you add up all the different taxes and deductions. I think I'm going to try adjusting my W-4 like you suggested rather than waiting until tax season for a refund. Do you happen to know if there's a safe rule of thumb for how much to adjust withholding without risking owing money at tax time? I'm worried about getting the calculation wrong and ending up with a surprise tax bill.
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Zainab Omar
•A good rule of thumb is to only adjust your withholding by the amount you're confident was over-withheld from your bonus. You can estimate this by calculating what your bonus SHOULD have been taxed at (your marginal rate) versus what was actually withheld. For example, if you got a $10,000 bonus and $4,000 was withheld (40%), but your marginal tax rate is only 24%, then your actual tax liability on that bonus is probably around $2,400. Add in FICA taxes (7.65%) for another $765, so roughly $3,165 total. That means about $835 was over-withheld ($4,000 - $3,165). You could safely reduce your withholding by that $835 spread across your remaining paychecks. The IRS also has a "safe harbor" rule - as long as you pay at least 90% of this year's tax liability OR 100% of last year's tax liability (whichever is smaller), you won't owe penalties even if you end up owing a bit at tax time. I'd recommend using the IRS withholding calculator on their website - it takes into account your YTD earnings and can give you more precise W-4 adjustments. Just remember to change it back in January!
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Marilyn Dixon
This is such a frustrating experience, but you're definitely not alone! I went through the exact same shock when I saw my year-end bonus withholding. What's happening is likely that your employer is using the "aggregate method" for withholding - they temporarily combine your bonus with your regular salary and calculate taxes as if that inflated amount was your normal pay. This can easily push the withholding calculation into the 37% or even higher brackets, especially when you add in all the other deductions. Here's what's probably being taken out of your bonus: - Federal income tax (could be 22% flat rate OR much higher if using aggregate method) - Social Security (6.2%) - Medicare (1.45% + possible 0.9% additional Medicare tax for high earners) - State income tax (varies widely by state) - Any 401k, HSA, or other pre-tax deductions - Possibly local/city taxes All of this can definitely hit that 38-40% range you're seeing. The important thing to remember is that when you file your actual tax return next year, your bonus just gets added to your regular income and taxed at your normal progressive rates. So if your marginal rate is 24%, most of your bonus will be taxed at 24%, not 40%. You'll likely get a decent refund from all that over-withholding. You can ask HR if they'd switch to the 22% flat rate method for future bonuses, or consider temporarily adjusting your W-4 to reduce withholding on your regular paychecks for the rest of the year to offset this. Just make sure to change it back in January!
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Sofia Rodriguez
•This whole thread has been so helpful! I had no idea there were two different methods employers could use for withholding on bonuses. I'm definitely going to check with my HR department to see which method they're using. One thing I'm still confused about though - if the aggregate method can result in such high withholding (like 40%), why would any employer choose to use it over the flat 22% method? It seems like it would just cause a lot of employee confusion and complaints. Is there some advantage to the company for using the aggregate method? Also, for those who have successfully gotten their employers to switch methods - how did you approach that conversation with HR? I don't want to come across as demanding or like I don't understand taxes, but this really does impact my cash flow significantly.
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