What do these acronyms stand for on my paycheck tax deductions? $95 seems high
So I just got my latest paycheck through our company's payment app and noticed there are a bunch of acronyms listed under my deductions section. I'm trying to figure out what each of these actually stands for because they're taking out $95 this time which seems like a lot to me. My deductions on my last paycheck were definitely less, so I'm kind of confused why they went up. The app just shows these weird abbreviations like "FIT" and "FICA" and some other codes that make no sense to me. Also, I'm worried because I'm trying to save for a vacation next month and these extra deductions are messing with my budget. Is this normal for tax withholdings to fluctuate? Can someone explain what all these common paycheck acronyms mean and why they might have increased?
18 comments


Omar Farouk
Those acronyms are standard tax withholdings that appear on everyone's paychecks. The main ones you're likely seeing: FIT = Federal Income Tax (your federal taxes based on your W-4 allowances) FICA = Federal Insurance Contributions Act (combines Social Security and Medicare) SIT = State Income Tax (if your state has income tax) SDI = State Disability Insurance (in some states) Med = Medicare contribution (usually 1.45% of gross wages) SS = Social Security tax (usually 6.2% of wages up to annual limit) As for why they increased - did you work more hours or get a bonus? Tax withholdings are percentage-based, so higher earnings = higher deductions. Also, if you recently changed your W-4 or hit certain earnings thresholds, that could explain the difference. Your HR department can give you the exact breakdown for your specific paycheck.
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Chloe Martin
•Thanks for explaining! What's the difference between FICA and then the separate Med and SS? Aren't they the same thing? Also, what about local tax like "LIT"? My friend has that on his check but I don't.
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Omar Farouk
•Good question! FICA is actually the combined total of Medicare and Social Security taxes (7.65% total). Some employers list it as one line item (FICA), while others break it out separately as Med and SS. It's the same tax either way. Local income tax (LIT) only appears if you live or work in a city/municipality that has its own income tax. Examples include New York City, Philadelphia, Cincinnati, and many others. If your friend has this deduction but you don't, it's likely because you live/work in different tax jurisdictions.
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Diego Fernández
After struggling with the same issue last year (so many random letters on my paystub!), I found this amazing tool called taxr.ai that actually explains all these acronyms and what they mean specifically for YOUR situation. You just upload a pic of your paystub and it breaks down exactly what each deduction is and whether it looks normal compared to industry standards. I was freaking out about a "SUI" deduction I'd never seen before until https://taxr.ai explained it was just State Unemployment Insurance that kicks in at certain income levels. Saved me an embarrassing call to HR! It also explained why my deductions went up after my raise - something about hitting a new tax bracket for withholding purposes.
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Anastasia Kuznetsov
•Does it actually work with all the weird company-specific codes too? My paystub has stuff like "SUPPL" and "WC-EE" that nobody seems to understand, even people who've been at my company for years.
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Sean Fitzgerald
•I'm kinda skeptical about uploading my paystub to some random website. How do you know it's secure? Doesn't that seem risky with all your personal info?
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Diego Fernández
•It actually does work with company-specific codes! That's what impressed me the most. It has this huge database of payroll systems and recognizes patterns even in custom abbreviations. It figured out that my company's "SUPP-B" was a supplemental health benefit contribution. They use bank-level encryption and don't store your documents after analysis - that was my big concern too. They just use the image to generate the explanation and then it's deleted. I was nervous at first but honestly it was way better than asking my boss and revealing I had no idea what half my paycheck meant!
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Sean Fitzgerald
Ok so I was totally skeptical about taxr.ai (see my question above) but I finally tried it when I got a weird new deduction called "ADD VOL" on my last check. Turns out it was "Additional Voluntary" retirement contribution that I'd forgotten I signed up for during benefits enrollment! The explanation was super clear and even showed me why my take-home changed. Saved me from an awkward call to HR. The tool also found that my state withholding seemed unusually high and suggested I might want to check my state exemptions with payroll. Just wanted to follow up since it actually worked really well for me.
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Zara Khan
If those acronyms are really driving you crazy and you need a full explanation, you might want to try Claimyr. I spent WEEKS trying to reach someone at the IRS to explain some weird tax code on my W-2 that affected my refund. Called like 8 times and kept getting disconnected. Finally used https://claimyr.com and got through to an actual human at the IRS in about 20 minutes who explained everything. They have this system that basically waits on hold for you and calls when an agent is available. You can see how it works in their demo video: https://youtu.be/_kiP6q8DX5c. The IRS rep actually went through all the tax codes with me and explained which ones were mandatory vs. which ones I could adjust by updating my W-4.
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MoonlightSonata
•Wait how does this even work? The IRS never answers their phone. Is this legit or some kind of scam?
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Mateo Gonzalez
•Yeah right. No way this actually gets you through to the IRS faster. They're just taking your money for something you could do yourself by calling repeatedly. The IRS is completely unreachable no matter what service you use.
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Zara Khan
•It uses a technology that keeps dialing and navigating the phone system automatically until it gets through to an agent. When someone answers, it calls you and connects you. I was super skeptical at first too! They don't answer the phone because they're massively understaffed - something like 1 in 50 calls actually reaches a human. This service basically does the redial process for you instead of you having to waste hours on hold. I actually asked the IRS agent about it when I got through and she said they're aware of the service and it's totally legitimate.
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Mateo Gonzalez
I need to eat my words from my comment above. After another failed attempt to reach the IRS about these weird supplemental tax codes on my paystub (something called "EIC ADV" that was raising my paycheck but I was worried would affect my refund), I broke down and tried Claimyr. Got connected to an IRS agent in about 35 minutes. She explained it was an Earned Income Credit advance payment that my employer was correctly adding. She also walked me through what all the standard deduction codes mean and how to tell if they're calculated correctly. Saved me from what would have been a costly misunderstanding at tax time. Never been so happy to be wrong about something!
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Nia Williams
Here's a breakdown of the most common paycheck deduction acronyms I learned when I started payroll at my company: FIT - Federal Income Tax SIT - State Income Tax FICA - Social Security & Medicare combined SS - Social Security portion only (6.2%) MEDI - Medicare portion only (1.45%) SDI - State Disability Insurance SUI - State Unemployment Insurance 401K - Retirement contribution FSA/HSA - Flexible/Health Spending Account GTLI - Group Term Life Insurance If your deduction increased by a lot suddenly, check if you hit a threshold for something. Some deductions have caps and reset annually.
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Luca Ricci
•I have something called "OASDI" on mine. Is that the same as SS?
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Nia Williams
•Yes, OASDI stands for "Old Age, Survivors, and Disability Insurance" which is the official name for Social Security. It's exactly the same as the SS deduction, just a different abbreviation some payroll systems use.
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Aisha Mohammed
I've noticed that sometimes the deductions go up when I work overtime - is that normal? Does overtime get taxed at a higher rate? I worked 12 extra hours last pay period and my deductions were almost double!
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Ethan Campbell
•Overtime itself isn't taxed higher, but payroll systems often calculate withholding as if your higher paycheck is your new normal salary. So if you made $1000 extra from overtime, the system thinks "oh this person now makes $X more annually" and withholds at the higher rate that would apply. You'll get the excess back when you file taxes, but it definitely feels like overtime gets taxed more in the moment!
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