Yes—car loan interest can be claimed in limited cases (2025–2028 rules and business use); other personal costs usually aren’t deductible.
Car costs spark confusion each filing season. Some items can lower tax, others do nothing. The line between personal and business use drives the answer. This guide lays out what you can and can’t claim, which forms apply, and how the 2025 law change on auto loan interest fits in.
Quick Answer By Situation
Start with your use case. Pick the row that matches your facts, then read the detailed sections that follow.
| Situation | Deductible? | What You May Claim |
|---|---|---|
| Personal car, no business use | Usually no | New 2025–2028 interest deduction on qualifying loans; sales tax or value-based vehicle tax if you itemize |
| Self-employed or gig work | Yes, proportional | Standard mileage or actual costs; depreciation or lease add-back rules apply |
| Employee using a car for work | Mostly no | Deductions suspended for most workers; limited carve-outs remain |
| Mixed personal/business use | Partly | Claim only the business share using mileage or actual method |
| EV or plug-in purchase | Maybe | Clean vehicle credits if the car, income, and seller steps all match |
| Leased car for business | Yes, with limits | Standard mileage or lease payments (pick one), plus inclusion amount rules |
Putting Car Loan Costs On A Tax Return — When It Works
Two separate tracks exist. One track covers business use of a vehicle. The other track is a new interest write-off created for 2025 through 2028. You may use both only if your facts fit both sets of rules.
Business Use: Standard Mileage Or Actual Costs
The tax law lets a sole proprietor or independent contractor claim car costs tied to income work. You pick one method for each vehicle:
- Standard mileage. Multiply business miles by the yearly IRS rate, then add work parking and tolls. Keep a log.
- Actual costs. Track gas, oil, repairs, tires, insurance, registration fees, and a depreciation figure if you own the car. Apply your business-use percent.
Rules live in Topic No. 510 and Publication 463. The 2024 rate is 67¢ a mile. You can’t stack lease payments on top of the standard rate. If you start with the standard rate on an owned car, you can switch to actual later.
Employees: Most Write-Offs Are Paused
Workers who receive a W-2 used to claim unreimbursed job expenses. Congress paused those write-offs for many filers through 2025. A few groups still use Form 2106, like Armed Forces reservists and qualified performing artists.
New 2025–2028 Interest Deduction On Auto Loans
A 2025 law adds an above-the-line interest deduction for a qualifying loan on a new personal-use vehicle assembled in the United States. The cap is $10,000 of interest a year per return, with income phaseouts. The break runs through 2028. Leases don’t count. This new write-off is separate from business car rules and can apply even if you take the standard deduction. See the IRS page on OBBB provisions.
Check the vehicle and your income against the law’s criteria. If you bought in 2025 or later within the window, save your year-end lender statement. If you refinance, keep paperwork that shows interest paid by year.
Sales Tax And Value-Based Registration Fees
Itemizers may choose state and local sales tax instead of state income tax. If you choose sales tax, the motor vehicle tax can be part of that number. Some states also charge a yearly personal property tax tied to vehicle value. Only the value-based portion counts. Flat plate fees or weight fees don’t. Your bill often splits the amounts, which makes the deductible slice clear.
Clean Vehicle Credits Still Apply
Credits for new or used clean vehicles can lower tax. Dealer steps and income caps matter. Buyers who transfer the credit to the dealer must still file the credit form.
How To Pick The Right Route
The right path depends on how you use the car, what you bought, and which records you keep well. The flow below helps you pick.
If You Earn 1099 Income
Start with a clean mileage log. If you drive many business miles and run a modest-cost car, the standard rate often beats actual costs. If you drive fewer miles in a newer car with higher depreciation, the actual method can win. Run both ways once a year.
If You’re A W-2 Employee
Skip unreimbursed car write-offs unless you fall into the narrow groups still allowed to file Form 2106. Ask your employer for mileage reimbursement under an accountable plan. That fixes the tax issue without Schedule A drama.
If You Bought A New Car In 2025–2028
Check whether your vehicle meets the loan-interest rules. If it does, collect interest totals by year. This deduction is separate from itemizing. You can claim it even if you take the standard deduction. It doesn’t replace EV credits or business car choices; it sits beside them.
What You Can Claim, By Category
Interest
Personal-use auto loan interest was a dead end for years. The 2025 law changed that for a limited window and only for certain vehicles. For business use, interest can be part of the actual-cost method, prorated by business use. If you pick the standard rate, interest is already baked into the cents-per-mile figure.
Depreciation
Owners using actual costs can claim depreciation up to IRS limits. The luxury auto caps apply. If you also claim a clean vehicle credit, basis adjustments follow the instructions for that credit.
Lease Payments
Leases follow a different set of limits. Pick either the standard rate or the lease-payment route. If you pick payments, an inclusion amount may reduce the write-off for high-value models.
Fuel, Repairs, Insurance
These belong in the actual-cost bucket. Keep receipts and divide by business-use percent. The standard rate already covers these, so don’t double count.
Registration Fees And Property Tax
If your state charges a yearly amount based on value, that slice can land on Schedule A as personal property tax. If the fee is flat, you can’t claim it. Some states split the bill into value and weight parts. Only the value part counts.
Recordkeeping That Stands Up
Good logs and statements make exams easier. Build a simple kit and update it monthly. Here’s a lean checklist you can print and follow.
| Record | Why It Matters | Tip |
|---|---|---|
| Mileage log | Proves business use percent | Track start, end, date, client, and purpose |
| Fuel and repair receipts | Supports actual-cost method | Snap photos and tag by vehicle |
| Lender interest statement | Shows yearly interest paid | Match totals to bank records |
| Registration bill | Breaks out value-based tax | Circle the value slice for Schedule A |
| Lease agreement | Confirms inclusion amount rules | Keep the lease addendum pages |
| Dealer credit paperwork | Documents EV credit steps | Save the seller’s report and VIN |
Worked Scenarios
Solo Contractor Buys A Van In 2025
Sam drives 15,000 miles in a year, with 10,500 miles for 1099 work. Sam pays $4,800 of interest in 2025. Sam can claim the business share using either method. Sam may also claim the new personal-loan interest break if the van meets the build and weight limits and the income phaseout doesn’t erase it.
Itemizer In A State With Value-Based Car Tax
Alex’s state bills an annual charge based on vehicle value plus a flat tag fee. Alex can add the value slice to Schedule A as personal property tax. If Alex chooses the sales-tax route on Schedule A instead of state income tax, the motor vehicle sales tax paid at purchase can count too, up to the general rate limits in the instructions.
Forms And Lines To Know
- Schedule C and Form 4562. Report business car costs and depreciation.
- Form 2106. Only for the narrow employee groups that still qualify.
- Schedule A. Itemized deductions, including personal property tax and the state and local sales tax path.
- Form 8936. Clean vehicle credit paperwork, including dealer transfers.
Where The Official Rules Live
Read the IRS pages that govern these topics. Business car rules are in Topic No. 510. The new loan-interest break appears in the IRS page on OBBB provisions.
Step-By-Step Plan Before You File
1) Map Your Use
Write a one-line statement: personal, business, or mixed. Add your business-use percent from your log.
2) Choose A Method
Run the standard rate and the actual-cost math both ways, then pick the larger legal number. Keep that worksheet with your return.
3) Check 2025–2028 Eligibility
If you financed a new car during the window, review the loan-interest rules and income caps. Save the lender’s yearly interest total.
4) Gather Proof
Pull receipts, the lender statement, your registration bill, and any dealer credit documents. Scan everything into a single folder labeled by tax year.
5) Fill The Right Lines
Use Schedule C and Form 4562 for self-employed car costs. Use Schedule A only if you itemize, and only for value-based vehicle tax or the sales-tax path. Use Form 8936 for clean vehicle credits. Use Form 2106 only if your job class still allows it.
With the right method and clean records, many filers can reduce tax tied to a car. Apply the rules to your facts, avoid double counting, and keep evidence that matches each number on the return.
File confidently once each number matches your records.