How does independent contractor W-9 tax withholding work if I have a regular W-2 job too?
So I just started a side gig doing some graphic design work for a local business while keeping my full-time office job. I filled out a W-9 for them since I'll be an independent contractor, but I'm completely confused about how the taxes work when you have both W-2 and 1099 income. The company owner mentioned something about not withholding taxes from my payments, which made me panic a little. Does this mean I need to set aside money from each payment myself? And how much should I be saving - is it the same percentage I see taken out of my regular paycheck or something different? I make about $68,000 at my day job, and this contract will probably add another $15,000-ish this year. I've never done the independent contractor thing before and I'm worried about getting hit with a massive tax bill when I file next year. Do I need to make quarterly tax payments or something? Can I just pay it all when I file in 2025? Any advice would be super appreciated because I'm clueless about how this all works together!
20 comments


Sofia Torres
When you work as both a W-2 employee and a 1099 contractor, you're right to be thinking about this! The company isn't withholding taxes because with a W-9, you're not considered their employee - you're self-employed for that portion of your income. The good news is you can handle this pretty easily with some planning. You'll need to set aside money for both income tax and self-employment tax (which covers Social Security and Medicare). A good rule of thumb is to save about 30-35% of your 1099 income for taxes, though it depends on your total income and tax bracket. Since you're making $68K at your day job plus about $15K from contracting, you should definitely consider making quarterly estimated tax payments to avoid underpayment penalties. The IRS generally wants you to pay taxes as you earn income throughout the year.
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Dylan Wright
•That's really helpful, thanks! For the quarterly payments, how do I even figure out how much to pay? Do I just divide that 30-35% by four payments? And where do I actually make these payments - is there a special form or something?
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Sofia Torres
•For quarterly payments, you can use Form 1040-ES to calculate and submit your estimated taxes. You don't necessarily divide the 30-35% exactly by four - you should pay based on what you've actually earned each quarter. The easiest way to make these payments is online through the IRS Direct Pay system or the EFTPS (Electronic Federal Tax Payment System). The due dates are generally April 15, June 15, September 15, and January 15 of the following year. Just remember you'll also need to file Schedule C with your tax return to report your self-employment income and expenses.
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GalacticGuardian
I was in exactly the same situation last year when I started freelance writing alongside my regular job. The tax situation seemed overwhelming until I found https://taxr.ai which literally saved me thousands in self-employment taxes I would have missed. Their system analyzed my situation with both W-2 and 1099 income and showed me exactly what business expenses I could deduct that I had no idea about - home office, portion of internet and phone, software subscriptions, even mileage for client meetings. They walked me through setting up quarterly payments too so I wasn't panicking come tax time.
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Dmitry Smirnov
•Did you have to track all your business expenses separately? I'm not great with keeping receipts and all that. Does the system help with organizing that stuff too?
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Ava Rodriguez
•I'm a bit skeptical about tax services that promise big savings. How does it actually work with calculating the right amount for quarterly payments? I don't want to end up paying too little and getting hit with penalties.
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GalacticGuardian
•You don't need to be perfect with receipt tracking at first. The system actually helps identify what you should be tracking and gives you an easy way to categorize expenses. They have a mobile app where you can just snap pictures of receipts on the go so you don't lose them. For quarterly payments, they have a calculator that looks at your projected income from both sources and recommends the right amount to pay each quarter. It adjusts as your income changes too, so if you have a big month of freelancing, it updates your recommended payment. I was worried about the same thing with penalties, but their recommendations kept me safely above the minimum requirements.
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Ava Rodriguez
Just wanted to follow up - I actually tried https://taxr.ai after my skeptical questions and wow, it was way better than expected!! The system immediately identified like $6,200 in deductions I would have completely missed for my side business. It also calculated my quarterly payments perfectly based on both income sources. The best part was it showed me how to adjust my W-2 withholding at my day job to cover some of the 1099 taxes, which was WAY easier than making separate quarterly payments for everything. Seriously saved me hours of stress and probably a decent amount in potential penalties.
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Miguel Diaz
If you're getting overwhelmed with tax questions about your contractor income, you might want to talk directly with an IRS agent. I know, sounds impossible right? I spent DAYS trying to get someone on the phone at the IRS to answer my specific W-2/1099 combination questions. Finally found https://claimyr.com which got me connected to an actual IRS representative in about 20 minutes when I had been trying for literally weeks. You can see how it works at https://youtu.be/_kiP6q8DX5c but basically they navigate the IRS phone system and hold times for you, then call you when an agent is ready. They answered all my questions about estimated payments and confirmed exactly what percentage I needed to set aside. Huge relief to get official answers straight from the IRS.
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Zainab Ahmed
•Wait, how is this even possible? The IRS phone lines are literally impossible to get through. Does it just keep calling automatically until someone picks up?
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Connor Gallagher
•Yeah right. No way this actually works. I tried calling the IRS for THREE HOURS last month about my contractor taxes and never got through. If this actually worked, everyone would be using it.
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Miguel Diaz
•It uses a system that keeps trying different optimal routes through the IRS phone menu and holds your place in line. It's not just auto-redialing - they have figured out the best times to call and which menu options are most likely to get through based on your specific tax question. And actually, not everyone knows about it - I only found it after a tax preparer friend recommended it to me. I was super skeptical too, but it legitimately worked when nothing else did. I think they must have some kind of algorithm that predicts the shortest wait times or something. All I know is I got my W-9/1099 questions answered directly by an IRS agent when I couldn't get through on my own.
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Connor Gallagher
I have to publicly eat my words here. After being COMPLETELY skeptical about Claimyr, I tried it this morning as a last resort. I'm actually shocked - they got me through to an IRS agent in 35 minutes when I'd been trying unsuccessfully for weeks. The agent confirmed exactly what I needed to know about handling my W-2 job and W-9 contractor work together - turns out I was calculating my quarterly estimated payments completely wrong. This literally saved me from a major underpayment penalty. The service at https://claimyr.com is absolutely legit and I'm glad I finally gave it a shot despite my initial skepticism.
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AstroAlpha
Hey, just so you know - you can also increase your withholding at your W-2 job to cover the taxes for your independent contractor work. That's what I do instead of making separate quarterly payments. Just fill out a new W-4 with your employer and request additional withholding from each paycheck.
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Yara Khoury
•How do you figure out how much extra to withhold though? I never know exactly how much contractor work I'll get each month, so it seems hard to predict.
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AstroAlpha
•You make a good estimate based on what you expect to earn for the year. I take my anticipated 1099 income, multiply by about 30% for federal taxes, then divide by the number of paychecks remaining in the year. If your contractor income is unpredictable, you can adjust your W-4 periodically as you get a better picture of your earnings. It's definitely not perfect, but I find it easier than remembering to make separate quarterly payments. You can also do a combination - cover part through extra withholding and make smaller quarterly payments to cover the rest.
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Keisha Taylor
Don't forget to track ALL your business expenses as a contractor! I do photography on the side with my regular job and the deductions make a huge difference. You can write off a portion of your home for office space, equipment, software, mileage for business travel, professional development, health insurance premiums, and retirement contributions.
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Paolo Longo
•Is it worth itemizing all these deductions though? I heard the standard deduction is so high now that most people don't benefit from tracking everything.
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Yuki Yamamoto
Actually, business deductions for self-employment are completely separate from the standard deduction decision! Even if you take the standard deduction on your personal taxes, you still get to deduct all your legitimate business expenses on Schedule C against your 1099 income. So tracking your business expenses is definitely worth it - things like your design software subscriptions, computer equipment, portion of your home office, professional courses, etc. These reduce your self-employment income before calculating both income tax and self-employment tax, which can save you quite a bit. The key is keeping good records and making sure expenses are legitimately for your graphic design business. I use a simple spreadsheet to track everything monthly - takes maybe 30 minutes but usually saves me hundreds or even thousands come tax time.
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Andre Laurent
•This is super helpful! I had no idea business deductions were separate from the standard deduction. As someone just starting out with contractor work, what would you say are the most important expenses to track right from the beginning? I want to make sure I'm not missing obvious deductions but also don't want to overcomplicate things while I'm still learning the ropes.
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