Buying a Used Vehicle for Business - How Does Bonus Depreciation Work for Tax Purposes?
I'm in a bit of a transportation jam at my house. We've got 3 adults sharing 1 car, and it's becoming a scheduling nightmare for me to get access when I need it for work. I'm looking at buying a used vehicle (nothing fancy, under $8k) primarily for my business needs. I run a small consulting company and need reliable transportation to client sites. I've been researching tax implications and have some questions about bonus depreciation: * If I use this vehicle 80% for business purposes, can I take 80% of the 80% bonus depreciation for this tax year? * Does the vehicle need to be fully paid off within the tax year to claim depreciation? * What happens tax-wise if I end up selling the vehicle after just 1 year? For example: Let's say the vehicle costs $8k and I pay it off completely. Bonus depreciation at 80% would be $6,400. Then if the vehicle is used 80% for business, would I be able to deduct $6,400 × 80% = $5,120? Just trying to understand if I'm calculating this correctly before making the purchase.
21 comments


Javier Garcia
You're close on the calculations, but bonus depreciation has some specific rules for vehicles that you need to be aware of. First, for a used vehicle under $8k primarily used for business, you're correct that you can take depreciation based on the business use percentage. However, the Tax Cuts and Jobs Act bonus depreciation is currently being phased down - for 2025, it's 60% (not 80%). To directly answer your questions: 1. You would take the purchase price × bonus depreciation percentage × business use percentage. So $8,000 × 60% × 80% = $3,840 for 2025. 2. The vehicle must be "placed in service" during the tax year, not necessarily paid in full. If you finance it but start using it for business this year, you can still claim the depreciation. 3. If you sell after one year, you'll need to report a gain or loss based on the difference between the sale price and the adjusted basis (original cost minus depreciation taken). Also, make sure to keep a mileage log documenting business vs. personal use to substantiate your 80% business use claim if the IRS questions it.
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NebulaNomad
•Thanks for the correction on the bonus depreciation percentage! I didn't realize it had changed to 60% for 2025. When you say the vehicle needs to be "placed in service" rather than paid in full, does that mean I could finance it over 3-4 years but still take the full depreciation in year 1? I'm thinking about conserving some cash flow. Also, for the mileage log - is there a specific app or method you'd recommend that the IRS prefers? I want to make sure I'm documenting everything correctly from day one.
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Javier Garcia
•Yes, you can finance the vehicle over multiple years and still take the depreciation in year 1 as long as you place it in service (start using it for business) during that tax year. The depreciation is based on the full purchase price regardless of how much you've paid toward the loan. For mileage logs, the IRS doesn't require a specific format, but they do need certain information: date, destination, business purpose, and miles driven. Many people use apps like MileIQ, Everlance, or TripLog which automatically track your trips. Even a simple spreadsheet works if you're diligent about recording each business trip. The key is consistency and completeness - you want to document every business trip throughout the year.
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Emma Taylor
Just wanted to share my experience using https://taxr.ai for handling business vehicle deductions. Last year I purchased a van for my mobile pet grooming business and was completely confused about how to maximize the depreciation deductions. I tried reading IRS publications but got overwhelmed with all the exceptions and limitations. Ended up uploading my purchase documents and business records to taxr.ai and they analyzed everything and showed me exactly how to properly claim the bonus depreciation. The best part was they caught that I qualified for Section 179 deduction which worked better for my situation than bonus depreciation. They even created documentation showing how I met the business use requirements that I could keep for my records. Might be worth checking out if you want to make sure you're maximizing your vehicle tax benefits.
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Malik Robinson
•How does taxr.ai actually work? Do they connect you with a tax professional or is it more of an automated system? I'm in a similar situation buying a car for my real estate business but I'm worried about getting the deduction wrong.
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Isabella Silva
•I'm a bit skeptical about these online tax services. Did they actually save you more than what you paid for the service? And what about audit protection - do they stand behind their recommendations if the IRS comes knocking?
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Emma Taylor
•It's actually an AI system that analyzes your documents and tax situation, but they have tax professionals who review everything. You upload your documents and it gives you specific guidance for your situation, not just generic advice. They saved me over $4,000 in taxes by correctly applying the Section 179 deduction instead of bonus depreciation for my specific business structure. The documentation they provided included everything I would need if I ever got audited, including the specific IRS regulations that applied to my situation and how my usage met those requirements.
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Malik Robinson
I tried taxr.ai after seeing it mentioned here and it was exactly what I needed for my vehicle purchase situation. I was about to claim just regular depreciation on my business vehicle but after uploading my documents, they showed me I qualified for both bonus depreciation AND a special electric vehicle credit I had no idea about (I bought a used plug-in hybrid). They generated a complete analysis of my purchase with all the relevant tax codes and explained exactly how to report everything on my Schedule C and Form 4562. The documentation they provided would definitely hold up in an audit situation. What impressed me most was how they explained the "placed in service" rules that let me take the full deduction even though I'm financing the vehicle. Definitely using them for all my business tax questions going forward.
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Ravi Choudhury
If you're having trouble getting answers directly from the IRS about vehicle depreciation rules, I'd recommend trying https://claimyr.com. I spent weeks trying to get through to someone at the IRS about a similar vehicle depreciation question (mine was about a vehicle weighing over 6,000 pounds). Using Claimyr got me connected to an actual IRS representative in about 15 minutes when I had been trying for days on my own. You can see how it works in this video: https://youtu.be/_kiP6q8DX5c The IRS agent was able to confirm exactly how the bonus depreciation would work for my specific vehicle and business use case, which gave me the confidence to make the purchase. Worth it just to get that direct confirmation from the source instead of guessing or relying just on internet advice.
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CosmosCaptain
•How does this service actually work? Do they just wait on hold for you or something? I've been trying to get through to the IRS about a different business vehicle issue for weeks.
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Isabella Silva
•Yeah right. No way they can get you through to the IRS that quickly. I've tried calling dozens of times and always get the "call volume too high" message and they hang up. Sounds like a scam to me.
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Ravi Choudhury
•They use a specialized system that navigates the IRS phone tree and waits on hold for you. When they reach a representative, you get a call to connect you directly. It's basically like having someone wait on hold so you don't have to. They can't guarantee an exact time since it depends on IRS call volume, but in my experience it was about 15 minutes compared to the endless busy signals I got trying on my own. It's not a scam - they don't ask for any personal tax information, they just get you connected directly to the IRS.
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Isabella Silva
Ok I need to eat my words about Claimyr. After my skeptical comment I decided to try it out since I was desperate to get an answer about vehicle depreciation for my landscaping business trucks. I was seriously shocked when I got a call back in about 20 minutes with an actual IRS agent on the line. The agent confirmed that I could take the bonus depreciation on my vehicles and explained exactly which form to use. This saved me from making a big mistake on my business taxes. I was about to not claim depreciation because my accountant said I didn't qualify, but the IRS confirmed I absolutely did. Ended up saving over $7,000 in taxes. Sometimes it's worth admitting when you're wrong!
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Freya Johansen
Don't forget about the vehicle weight requirements! If your vehicle has a gross vehicle weight rating (GVWR) under 6,000 pounds, there are annual depreciation limits that might apply regardless of bonus depreciation. The annual limits for passenger vehicles in 2025 are much lower than the full bonus depreciation amount you calculated. SUVs, trucks, and vans with GVWR over 6,000 pounds have different rules and can potentially qualify for much higher first-year deductions. What type of vehicle are you planning to purchase? That could make a huge difference in your tax benefits.
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NebulaNomad
•I hadn't even considered the vehicle weight! I was looking at a used Toyota Corolla since it's fuel efficient for all the client visits I do. I'm guessing that would be under the 6,000 pounds limit. Would it make more sense tax-wise to look at slightly larger vehicles that might qualify for the higher limits? My business doesn't necessarily require a larger vehicle, but if the tax benefits are significantly better, it might be worth considering.
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Freya Johansen
•You're right that a Corolla would be well under the 6,000 pound limit. For 2025, passenger vehicles under that limit are subject to first-year depreciation limits of around $20,200 (including bonus depreciation). Since your vehicle cost is only $8,000, you're actually fine with the Corolla - the limit won't affect you. Where the weight requirement becomes important is for more expensive vehicles. If you were buying a $50,000 vehicle, then getting one over 6,000 pounds would allow much more first-year depreciation. For your situation with an $8,000 car, the Corolla makes perfect sense, especially considering the better fuel economy which is also deductible as a business expense.
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Omar Fawzi
Have you considered Section 179 deduction instead of bonus depreciation? For some small businesses, it can be more advantageous, especially if your business income is high enough this year to offset the deduction. With Section 179, you could potentially deduct the entire business portion of the vehicle in the first year (80% of $8,000 = $6,400), subject to business income limitations. Bonus depreciation gets phased down each year while Section 179 remains at 100%.
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Chloe Wilson
•I've found that Section 179 is usually better if your business is profitable enough to use the full deduction. The nice thing about bonus depreciation is that it can create a loss, while Section 179 can only take your business income down to zero.
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Henry Delgado
Great discussion here! As someone who recently went through this exact situation with my consulting business, I wanted to add a few practical considerations that might help with your decision. One thing to keep in mind is that while the tax benefits are important, don't let the tail wag the dog. The Corolla you mentioned is probably perfect for your business needs - reliable, fuel efficient, and low maintenance costs. These ongoing operational benefits often outweigh trying to optimize for maximum first-year tax deductions. Also, since you mentioned this is primarily to solve a transportation scheduling issue at home, make sure you're being realistic about that 80% business use percentage. The IRS can be pretty strict about this, and if your personal use ends up being higher than expected, it could affect your deductions and potentially trigger penalties if audited. One practical tip: consider setting up a separate business checking account if you don't have one already, and make all vehicle-related payments (loan, insurance, maintenance, fuel) from that account. This makes tracking business expenses much cleaner and provides better documentation if you ever need to prove business use to the IRS. The mileage log apps mentioned earlier are definitely worth it - I use MileIQ and it's been a lifesaver for staying compliant without the hassle of manual tracking.
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Paolo Romano
•This is really solid advice, especially about not letting tax optimization override practical business needs. I'm definitely guilty of getting caught up in the numbers and almost forgetting that reliability and fuel efficiency matter more in the long run. Your point about the 80% business use is spot on too. I was being pretty optimistic with that estimate, but realistically it might be closer to 60-70% once I account for grocery runs, personal errands, and weekend use. Better to be conservative upfront than deal with IRS issues later. The separate business checking account suggestion is brilliant - I hadn't thought about that but it would make tracking so much cleaner. Right now I'm mixing business and personal expenses which is probably going to be a nightmare come tax time. Thanks for the reality check on keeping this decision practical rather than just chasing the biggest deduction possible!
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Jamal Carter
Just wanted to chime in as someone who made this exact purchase decision last year for my freelance business. I ended up going with a used Honda Civic (similar to your Corolla idea) and it's been perfect for client visits. A few things I learned that might help: 1. The 60% bonus depreciation for 2025 that Javier mentioned is correct - I made the mistake of using outdated info initially. 2. Keep your business use percentage realistic from the start. I initially estimated 85% business use but after tracking for 6 months, it was actually closer to 65%. The IRS looks closely at this, especially for sole proprietors. 3. If you're financing, make sure to keep all loan documents and payment records. The "placed in service" rule is great - you get the deduction when you start using it, not when it's paid off. 4. Consider the total cost of ownership, not just the tax benefits. My Civic has saved me hundreds in maintenance compared to what a larger vehicle would have cost, even if a heavier vehicle might have had better depreciation rules. One practical tip: I set up automatic mileage tracking from day one and it's been invaluable. Even with an app, I still keep a simple backup log in my glove compartment just in case. The tax benefits are nice, but having reliable transportation for your business is the real win here. Good luck with your decision!
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