What do these paycheck deduction acronyms stand for? My take-home pay seems off
So I was looking at my latest paycheck through the employee portal and I'm totally confused about all these weird acronyms for the deductions. There's like FED MWH, SS TAX, MED, and some other company-specific ones I think? They're taking about $95 out this time which seems way higher than normal. My last paycheck had way fewer deductions. I started this job about 3 months ago and never really paid attention to the breakdown until now. Is this normal? Should I be concerned about why the deduction amount jumped? I'm wondering if there's a mistake or if I'm missing something obvious here. I'm not really tax-savvy so any help decoding these mysterious abbreviations would be appreciated!
24 comments


Ellie Kim
Those are standard payroll deductions that appear on most paychecks. FED MWH stands for Federal Income Tax Withholding - this is money your employer withholds from your paycheck to pay your federal income taxes. SS TAX is Social Security tax (6.2% of your wages up to a certain limit). MED is Medicare tax (typically 1.45% of your wages). The $95 increase could be due to several things - did you work more hours or get a bonus this pay period? That would increase all your withholdings. Or maybe you recently adjusted your W-4 form (withholding certificate)? Changes to your withholding elections would affect these amounts too. Sometimes deductions can also change if you recently hit a threshold for benefits eligibility.
0 coins
Fiona Sand
•What about SUI and SDI? I see those on my check too but nobody ever explained them.
0 coins
Ellie Kim
•SUI stands for State Unemployment Insurance - this is a tax that helps fund unemployment benefits in your state. SDI refers to State Disability Insurance, which provides short-term benefits if you can't work due to a non-work-related illness or injury. These are state-specific deductions, so the exact rates and details vary depending on where you work. Some states don't have these specific programs, which is why not everyone sees them on their paychecks.
0 coins
Mohammad Khaled
I went through this same confusion last year and discovered taxr.ai (https://taxr.ai) which literally saved me from major paycheck confusion. I uploaded a photo of my pay stub and it broke down every single acronym AND explained if the amounts looked right based on my pay. It helped me realize my employer was actually taking too much for state taxes because they had my residency wrong in their system. The thing I really appreciated is they explain everything in plain language. Like, I finally understood what "YTD" even meant (year to date) and why some deductions have different YTD totals than others.
0 coins
Alina Rosenthal
•Does this actually work with all the weird company-specific codes too? My check has stuff like "LDIS" and "VLTL" that I've never been able to figure out.
0 coins
Finnegan Gunn
•I'm skeptical about sharing my pay info with some random website. How secure is this? Do they store your pay stubs or something?
0 coins
Mohammad Khaled
•It definitely works with most company codes because their system recognizes patterns across tons of paystubs. LDIS is probably Long-term Disability Insurance and VLTL is likely Voluntary Life Term Insurance - both are common optional benefits. They use bank-level encryption and don't store your documents after analysis. They just scan it, extract the text to identify patterns, and then delete the actual image. I was nervous at first too but after reading their security page I felt comfortable. They don't ask for SSN or anything that could be used for identity theft.
0 coins
Finnegan Gunn
Ok I need to follow up here. I got desperate trying to figure out why my deductions jumped by $120 last month so I tried taxr.ai and it was actually really helpful. I found out that my 401k contribution percentage had somehow changed (HR system glitch) and they showed exactly where the discrepancy was. What I liked is it wasn't just like "here are what the acronyms mean" - it actually analyzed if the percentages were calculated correctly. Turns out my dental insurance premium also went up but nobody told me. Highly recommend if you're trying to decode all that paycheck jargon.
0 coins
Miguel Harvey
If you're having trouble getting answers from your company's HR department about your deductions, I had a similar issue last year with my W-2 and ended up using Claimyr (https://claimyr.com) to actually get through to someone at the IRS who explained everything to me. They have this cool service demo at https://youtu.be/_kiP6q8DX5c that shows how it works. Instead of waiting on hold for 3+ hours, they basically wait for you and call when an agent is available. I was super confused about why my employer's tax ID on my W-2 seemed wrong, and I needed to verify if this would cause issues with my tax return.
0 coins
Ashley Simian
•How exactly does this Claimyr thing work? Does it just call the IRS for you or something? I'm confused about how it actually helps with tax questions.
0 coins
Oliver Cheng
•Yeah right. Nobody gets through to the IRS. I tried calling them like 15 times last year about a missing refund and never got a human. This sounds too good to be true.
0 coins
Miguel Harvey
•It's a callback service that navigates the IRS phone tree and waits on hold for you. When they reach a live person, your phone rings and you're connected directly to the agent. You don't have to sit listening to hold music for hours. The reason it helps with tax questions is that sometimes only an actual IRS agent can answer specific questions about your tax situation or documentation requirements. In my case, I needed to confirm whether an error on my W-2 would trigger problems with my return or if I needed to request a corrected form from my employer.
0 coins
Oliver Cheng
I can't believe I'm saying this, but that Claimyr service actually works. I used it yesterday after seeing this post because I've been trying to figure out why my tax transcript shows different withholding amounts than my final paystub from last year. Got connected to an IRS agent in about 45 minutes (which is miraculous) and they explained that my employer probably submitted a correction to my W-2 that I never received. I spent MONTHS trying to get through on my own with no luck. The agent was able to tell me exactly what was reported and now I can go back to my employer with specific info. Totally worth it for the time saved.
0 coins
Taylor To
Common paycheck acronyms breakdown: - FIT/FWT: Federal Income Tax - SS/OASDI: Social Security - MED/FICA: Medicare - SIT/SWT: State Income Tax - LTD: Long-term Disability - STD: Short-term Disability - FSA/HSA: Flexible Spending Account/Health Savings Account - 401K: Retirement Contribution - GTLI: Group Term Life Insurance If your deductions suddenly increased, check if you: 1. Had a bonus or raise (increases taxes) 2. Changed benefits during open enrollment 3. Hit Social Security wage base from previous job (if you started mid-year) 4. Changed your W-4 withholding
0 coins
Ella Cofer
•What's the difference between pre-tax and post-tax deductions? Some of mine say "pre" next to them.
0 coins
Taylor To
•Pre-tax deductions come out of your gross pay before taxes are calculated, which reduces your taxable income and therefore lowers the amount of tax you pay. Common pre-tax deductions include certain retirement contributions (like traditional 401k), health insurance premiums, HSA/FSA contributions, and some commuter benefits. Post-tax deductions come out after taxes have already been calculated on your full gross pay. These don't reduce your tax burden. Examples include Roth 401k contributions, disability insurance in some cases, and garnishments.
0 coins
Kevin Bell
Has anyone used the IRS withholding calculator to check if their deductions are correct? My HR person told me to use it after I complained about too much tax being taken out, but it's super confusing.
0 coins
Savannah Glover
•The IRS withholding calculator (Tax Withholding Estimator) is actually pretty helpful! I used it after getting a second job and realized I needed to adjust my W-4. The trick is to have your most recent paystub and last year's tax return handy before you start.
0 coins
Felix Grigori
•The calculator is good but our payroll system uses some different calculation method. I tried adjusting based on the IRS calculator and still had issues. Best thing is just talk to HR directly - I found out our system had me classified in the wrong state which was messing up all my deductions.
0 coins
Jamal Harris
I had the exact same confusion when I started my first "real" job! One thing that helped me was asking my HR department for a copy of their payroll deduction guide - most companies have an internal document that explains all their specific codes and abbreviations. Also, don't feel embarrassed about not understanding this stuff. I've been working for 5 years and still sometimes get confused by new deductions that pop up. The $95 jump definitely warrants asking HR about it - could be anything from a benefits enrollment change to a payroll error. Better to ask and look "dumb" than to let them keep taking incorrect amounts! One tip: keep copies of your paystubs so you can track patterns over time. Sometimes deductions change seasonally (like if you max out Social Security contributions) or based on benefit eligibility periods.
0 coins
Mei Wong
•This is such great advice! I wish I had known to ask for that payroll deduction guide when I started. I've been trying to decode everything on my own and it's been so frustrating. The seasonal changes thing is interesting - I hadn't thought about that. My deductions have been all over the place and I was starting to think payroll was just making mistakes. Now I'm wondering if some of it might actually be normal fluctuations that I just don't understand yet. Definitely going to follow your advice about keeping copies of paystubs to track patterns. And you're right about not being embarrassed - I kept putting off asking HR because I thought I should already know this stuff, but clearly lots of people struggle with it!
0 coins
Oscar O'Neil
Just wanted to chime in as someone who's been through this exact same situation! When I first started working, I was so overwhelmed by all the paycheck deductions that I actually thought there was an error for the first few months. One thing that really helped me understand everything was setting up a simple spreadsheet to track my gross pay vs. net pay each period, along with all the deduction amounts. It sounds nerdy, but it helped me spot patterns and understand when changes were normal vs. when something was actually wrong. For your specific $95 jump, definitely worth checking with HR, but also consider these possibilities: Did you recently become eligible for health/dental/vision insurance? A lot of companies have a 90-day waiting period, so at 3 months you might have just started getting those deductions. Also, if you got any kind of raise or bonus (even a small one), all your percentage-based deductions would increase proportionally. The acronyms become second nature after a while, but don't hesitate to ask your HR department for clarification on any company-specific codes. Most of them are happy to explain once rather than deal with ongoing confusion from employees!
0 coins
Zoe Papadopoulos
•This is really helpful! The spreadsheet idea is brilliant - I never thought about tracking patterns that way. You're probably right about the 90-day eligibility thing. I just realized I might have automatically been enrolled in some benefits around my 3-month mark without really paying attention to the enrollment emails. I'm definitely going to start tracking my paystubs more systematically now. It's reassuring to know that feeling overwhelmed by all this is totally normal for new employees. Thanks for sharing your experience - makes me feel less alone in trying to figure all this out!
0 coins
Fatima Al-Rashid
I totally feel your pain on this! When I started my current job, I had the exact same confusion about all those cryptic acronyms. What really helped me was creating a simple "cheat sheet" by googling each abbreviation and writing down what it meant in plain English. For the $95 jump you mentioned - definitely worth investigating! A few things to check: Did you recently hit your 90-day mark and get enrolled in benefits like health insurance? That's super common and can cause a big jump in deductions. Also, did you get any overtime or bonuses this pay period? Even small increases in gross pay can bump up all your tax withholdings. One thing I learned the hard way is that some deductions are calculated as percentages of your gross pay, so any increase in earnings automatically increases those deductions too. Don't feel bad about not understanding this stuff right away - I think most people are just too embarrassed to ask about it, but payroll deductions are honestly pretty confusing when you're new to "real" jobs! I'd suggest reaching out to your HR department with your paystub and asking them to walk through each deduction with you. Most HR folks are happy to explain it once rather than deal with ongoing confusion from employees.
0 coins