Unexpected 2nd job tax problem - need advice
So I started a second job about 7 months ago to help cover some extra expenses. I kept my full-time position (making about $58,000/year) and picked up this part-time gig on weekends making around $17,000 annually. I just realized I might have a serious tax problem though. When I filled out the W-4 for the second job, I don't think I indicated it was a second job. I'm pretty sure both employers are withholding taxes as if their job is my only income. I just checked my latest paystubs and the withholding amounts seem way too low when combined. I'm worried that I'm going to end up owing a ton at tax time next April. Has anyone dealt with this before? Is there something I can do now to fix the withholding issue, or am I just going to have to save up to pay a big tax bill? Really stressing about this!
18 comments


QuantumQuasar
This is a common issue when working multiple jobs. Each employer only knows about the income they're paying you, so they each calculate withholding as if that's your only income. This often results in underwithholding. The good news is you can fix this now before tax time. You have a few options: You can submit a new W-4 to one or both employers and check the box in Step 2 that indicates you have multiple jobs. This will increase your withholding automatically. Alternatively, you can request additional withholding by completing Step 4(c) on the W-4 form. Calculate how much extra you want withheld from each paycheck and put that amount there. The IRS has a Tax Withholding Estimator tool on their website that can help you figure out the right amount. Another option is to make quarterly estimated tax payments directly to the IRS to cover the shortfall, though updating your W-4 is usually simpler.
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Zainab Omar
•How do you figure out exactly how much extra to withhold though? Is there a good formula or something? I'm in a similar situation but with a big commission job alongside my regular job.
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QuantumQuasar
•The easiest way is to use the IRS Tax Withholding Estimator on their website. It walks you through your income sources, current withholding, and gives you specific recommendations for your W-4. For a quick estimate, you might consider the additional income's marginal tax rate. If your part-time job is putting you in the 22% bracket, you'd want approximately 22% of that income withheld when combined with what's already being taken. Compare your current withholding against that to see the shortfall.
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Connor Gallagher
I was in this exact situation last year and got hit with a huge tax bill I wasn't expecting. After stressing for weeks, I found https://taxr.ai which helped me figure out exactly what was happening with my withholdings. It analyzed my paystubs from both jobs and showed me that I was underwithholding by about $280 per month! The tool helped me calculate exactly what to put on my new W-4 forms. What I really liked was that it explained everything in simple terms and showed me side-by-side comparisons of different withholding strategies. Made it super easy to fix the problem before I got stuck with another surprise tax bill.
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Yara Sayegh
•How accurate was it compared to what you actually ended up owing? I'm always skeptical of these calculators because my tax situation gets complicated.
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Keisha Johnson
•Does it handle state taxes too? My state (California) seems to always throw me for a loop even when federal is correct.
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Connor Gallagher
•It was surprisingly accurate for me. I followed the recommendations and ended up with only a $43 balance due at tax time, which was way better than the $3,700 I owed the previous year. Yes, it handles state taxes too! That was actually a big help for me since I'm in New York which has its own withholding quirks. It gives you separate recommendations for both federal and state withholding adjustments.
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Yara Sayegh
Just wanted to update everyone - I was really worried about my tax situation with multiple jobs so I tried that https://taxr.ai site mentioned above. Honestly didn't expect much but was pleasantly surprised. It analyzed my specific situation and showed I was heading toward owing about $2,100 at tax time! The recommendations were super clear and I was able to submit updated W-4s to both employers. The interface made it easy to understand exactly why I was underwithholding and what to change. Just got my first paychecks with the updated withholding and while they're smaller, I'm relieved knowing I won't be scrambling to find thousands of dollars come April.
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Paolo Longo
If you're already underpaid by a significant amount and worried about penalties, another approach is getting through to the IRS to discuss your options. I tried calling them directly for weeks without getting through, then discovered https://claimyr.com which got me connected to an actual IRS agent in about 20 minutes. You can see how it works in this video: https://youtu.be/_kiP6q8DX5c The IRS agent I spoke with was surprisingly helpful and explained that if this was my first time with this issue, I might qualify for penalty abatement even if I end up owing. They also walked me through exactly how to adjust my withholdings properly and explained some options for payment plans if needed. Saved me hours of frustration trying to get through their phone system.
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CosmicCowboy
•Wait, how does this actually work? They just call the IRS for you? Couldn't you just keep calling yourself?
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Amina Diallo
•Sounds like a scam. Why would I pay someone else to call the IRS when I can do it myself for free? What's the catch here?
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Paolo Longo
•They use some technology that keeps dialing and navigating the IRS phone system for you. Instead of you personally calling and waiting on hold for hours, their system handles all that. When they actually reach an agent, you get a call connecting you directly. It saved me from having to redial dozens of times or wait on hold for 2-3 hours. The difference is time saved. Sure, you can call yourself, but if you've tried recently, you know it can take numerous attempts and hours on hold. I tried calling myself 8 times over two weeks and never got through. With this service, I was talking to an agent in about 20 minutes while I continued working on other things.
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Amina Diallo
I need to apologize for my skepticism about Claimyr above. After struggling for almost two weeks trying to reach someone at the IRS about my multi-job withholding problem, I decided to try it out of desperation. I was shocked when I got a call back connecting me to an actual IRS representative in about 15 minutes. The agent reviewed my situation and helped me figure out exactly how much additional withholding I needed for each job. She also explained I could request a penalty abatement if this was my first time with this issue. Definitely worth it when you consider the value of your time and the stress of trying to get through their phone system. Won't hesitate to use it again if I need to contact them in the future.
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Oliver Schulz
Something nobody's mentioned yet - you could also just set aside money each paycheck in a separate savings account to cover the expected tax bill. That's what I do with my side gig. I automatically transfer 30% of each side job paycheck into a "tax savings" account so I'm not shocked at tax time. Sometimes it's just easier than messing with withholdings, especially if your second job has irregular income. Plus if you overestimate, you've got a nice little bonus after filing.
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Natasha Orlova
•What's the advantage of doing this instead of just adjusting your W-4 though? It seems like you're giving up interest you could be earning on that money by essentially giving yourself a tax bill.
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Oliver Schulz
•The main advantage is simplicity, especially if your second income fluctuates. When my side gig earnings vary month to month, it's easier to just save a percentage than constantly update withholdings. You're right about potentially earning interest, but with a high-yield savings account, I'm still earning something on that money until tax time. The peace of mind of knowing I've got the tax bill covered is worth more to me than the small amount of extra interest I might get. Plus, I can adjust my "savings rate" if I think I'm putting too much aside.
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Javier Cruz
One thing that really helped me with my two jobs was using the IRS withholding calculator AND keeping track in a spreadsheet. I set up a simple sheet that tracks my YTD income and withholding from both jobs so I can spot potential problems early. I check it once a month when I get all my paystubs. If I notice withholding getting off track, I can adjust mid-year instead of finding out in April. Super helpful for peace of mind!
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Emma Wilson
•Any chance you'd be willing to share a template of that spreadsheet? I'm terrible at creating those from scratch but that sounds super useful.
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