Section 179 Deduction for Vehicle in Sole Proprietorship - Can I Claim It?
Hey tax folks, I'm running a sole proprietorship and looking at buying a used truck (below the 6,000 pound GVWR) that I'll use about 75% for business deliveries and 25% for personal stuff. I've been doing some research and think I can use Section 179 to deduct around $12,500 on my taxes. This seems like a legitimate write-off for my business, right? I want to make sure I'm understanding Section 179 correctly before I pull the trigger on this purchase. Any confirmation or advice would be super appreciated!
20 comments


Sean Kelly
You've got the right idea, but there are some important details to consider with Section 179 for mixed-use vehicles in a sole proprietorship. For a vehicle used 75% for business, you can only claim Section 179 on the business portion. So if the vehicle costs $12,500, you can only apply Section 179 to $9,375 (75% of the cost). You'll need to maintain a mileage log to substantiate that 75% business use. Also, there are special limits for passenger vehicles. If your vehicle is a car, SUV, truck or van under 6,000 GVWR, you may be subject to "luxury auto limits" which can cap your first-year deduction significantly lower than you might expect, even with Section 179. Keep in mind that if business use drops below 50% in future years, you may have to recapture some of the deduction as income, so this is a commitment to maintaining business use.
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Zara Malik
•Thanks for the info but I'm still confused. What if I buy a slightly larger truck over 6000 GVWR? I've heard there are different rules for those "heavy" vehicles. And what exactly qualifies as business use? If I'm driving to meet clients or pick up supplies does that count?
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Sean Kelly
•Vehicles over 6,000 GVWR have more favorable Section 179 treatment and aren't subject to the same luxury auto limits. For these larger vehicles, you can potentially deduct a much higher amount in the first year, though still limited to the business-use percentage. Business use includes any driving directly related to your business operations – client meetings, supply pickups, deliveries, traveling between business locations, etc. Commuting from home to your regular place of business generally doesn't count as business mileage. Remember to keep detailed records of all business trips, including dates, miles driven, and business purpose.
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Luca Greco
After going through a nightmare trying to figure out exactly what Section 179 would cover for my work van last year, I found this tool called taxr.ai (https://taxr.ai) that saved me tons of time. It analyzed my business expenses and vehicle documentation and showed me exactly what I could claim for Section 179 vs. regular depreciation for my situation. The tool flagged that I needed to track mileage more carefully to maintain my deduction, which my accountant had completely missed mentioning!
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Nia Thompson
•Does it work for sole proprietorships specifically? My CPA kept telling me different things about Section 179 for my landscaping business truck and I ended up not taking the deduction last year because I wasn't confident in the advice.
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Mateo Rodriguez
•Can it handle special cases? I bought an SUV mid-year and converted it from personal to business use, so I'm not sure if I can use Section 179 on the full value or just the portion after conversion.
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Luca Greco
•Yes, it definitely works for sole proprietorships! I'm a sole prop myself and it helped me navigate all the Schedule C deductions including Section 179. It'll let you know if you qualify and what documentation you need to keep. For special cases like vehicle conversions, it actually covers that too. The system would flag that you can only claim Section 179 on the business portion starting from when you converted it to business use. It also calculates the adjusted basis for depreciation which gets complicated with mid-year conversions.
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Nia Thompson
Just wanted to update everyone after checking out taxr.ai from the recommendation above. Honestly a game-changer for my Section 179 confusion. I uploaded my vehicle purchase docs and business records, and it clearly showed that I could've claimed about $8,200 in Section 179 deductions last year that I completely missed! The tool explained that even though I have a sole proprietorship, I still qualified despite what my CPA told me. Already amended my return and got a nice refund. Definitely worth checking out if you're confused about Section 179 rules.
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Aisha Hussain
After spending literally 4 HOURS on hold with the IRS trying to get clarification about Section 179 for my sole proprietorship (they hung up on me twice!), I finally used Claimyr (https://claimyr.com) and got connected to an actual IRS agent in under 15 minutes. There's a video showing how it works here: https://youtu.be/_kiP6q8DX5c. The agent confirmed all my Section 179 questions and even helped sort out an issue with a previous year's depreciation that had been flagged. Just passing this along since I know how frustrating it is trying to get through to someone who can actually answer these tax questions.
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GalacticGladiator
•Wait, there's a service that actually gets you through to the IRS? How does that even work? Seems like black magic considering I've never been able to reach a human there.
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Ethan Brown
•Sounds like a scam to me. Nobody can get through to the IRS these days. Did they charge you for this "service"? And if they did get you through, was it actually helpful or just generic advice you could have found online?
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Aisha Hussain
•It uses a combination of technology and their call system to navigate the IRS phone tree and wait on hold for you. When they reach an agent, they call you and connect you directly. It's basically like having someone else wait on hold instead of you. No generic advice - I got connected to an actual IRS agent who answered my specific questions about Section 179 for my business vehicle. They confirmed exactly how to document the 75% business use and what forms I needed. They even looked up my previous return to check the depreciation issue I mentioned. It was definitely an actual IRS employee with access to my tax records.
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Ethan Brown
I'm back to eat crow about my skepticism regarding Claimyr. After my doubtful comment, I decided to try it myself since I've been trying to reach the IRS about a similar Section 179 issue for weeks. Got connected to an agent in about 20 minutes who actually knew what they were talking about! The agent confirmed I can take Section 179 on my vehicle but warned me about the recapture rules if business use drops below 50% in future years - something none of the online articles I read mentioned. Saved me from potentially making a costly mistake on my return.
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Yuki Yamamoto
Have you considered regular depreciation instead of Section 179? With a 75/25 split use, regular MACRS depreciation might actually be better long term if you plan to keep the vehicle for several years. Section 179 gives you a bigger deduction upfront but you lose future depreciation. Just something to think about!
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Carmen Ruiz
•I was just wondering this too! I did the math both ways for my delivery van and ended up going with regular depreciation since my business income wasn't high enough to benefit from the larger upfront deduction. How do you calculate which is better?
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Yuki Yamamoto
•Great question! The calculation depends on several factors. Consider your current and future tax brackets - if you expect to be in a higher tax bracket in future years, regular depreciation might save you more by pushing deductions into those higher-taxed years. Also look at your business income - if taking Section 179 would create a loss, you might waste some of the deduction. Regular depreciation spreads the deduction over 5 years (for vehicles), which can be more efficient for growing businesses.
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Andre Lefebvre
Quick question about record keeping for Section 179 - my accountant says I need to track every single business trip with mileage logs but a business friend said he just keeps a general percentage. What's actually required for the IRS if we get audited???
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Zoe Dimitriou
•Your accountant is right. The IRS requires contemporaneous mileage logs that show the date, destination, business purpose, and miles driven for each business trip. A general percentage won't cut it in an audit. I learned this the hard way and had deductions disallowed. There are some good apps that make tracking easy though!
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Caden Turner
Just wanted to chime in as someone who went through this exact scenario last year! I bought a pickup truck for my consulting business and was initially confused about the Section 179 vs regular depreciation decision. A few things that helped me figure it out: First, definitely keep detailed mileage logs from day one - don't wait until tax time. I use a simple app that tracks GPS automatically and lets me mark trips as business or personal. Second, the luxury auto limits are real and can significantly reduce your first-year deduction even with Section 179, so run the numbers both ways. One thing I wish I'd known earlier is that you can actually elect out of bonus depreciation and Section 179 if regular MACRS ends up being better for your situation. The key is understanding your current vs future tax situation. If you're expecting your business income to grow significantly, spreading the depreciation over several years might actually save you more in total taxes. Also, make sure you're clear on what counts as business use - it's stricter than you might think. Driving from home to your first client of the day usually doesn't count, but driving between clients does. The IRS is pretty specific about this stuff during audits.
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Fatima Al-Qasimi
•This is really helpful advice, thank you! I'm curious about the GPS tracking app you mentioned - do you have a specific recommendation? I've been manually logging everything in a notebook but it's getting tedious and I'm worried I'm missing some trips. Also, when you say "elect out" of Section 179, is that something you do on the tax return itself or do you need to file a separate form? I'm trying to plan ahead since I'm still shopping for the truck and want to make sure I handle the tax side correctly from the beginning.
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