IRS Publication 463 is the rulebook for deducting vehicle expenses — and it answers the questions self-employed drivers search for most: what the standard mileage rate includes, whether you can deduct car washes separately, and what you’re allowed to add on top. This guide translates Pub 463’s vehicle rules into plain English and links to our deep-dive guides on each scenario.
The Two Methods Publication 463 Allows
You deduct business vehicle costs one of two ways. The standard mileage rate — 70¢ per business mile in 2025 — replaces all operating costs in one number. The actual expense method deducts your real costs (gas, insurance, repairs, depreciation, car washes) multiplied by your business-use percentage. See our standard mileage vs actual expenses comparison to figure out which wins for you, or run your miles through the free mileage calculator.
What the Standard Mileage Rate Includes (and Excludes)
Publication 463 says the standard rate is used “in lieu of” actual costs — it already covers gas, oil, tires, repairs, insurance, registration, depreciation, and vehicle cleaning. That’s why car washes are included in the standard mileage rate and can’t be deducted again on top of it. Only two things stack on top: business parking fees and tolls. Commuting-related parking never qualifies.
Car Washes Under Each Method
The single most-searched Pub 463 vehicle question: standard mileage rate users cannot deduct car washes separately — that’s double-dipping. Actual-expense users can: washes, waxes, and detailing count as operating costs at your business-use percentage. The rules play out differently by occupation — see our guides for Uber and Lyft drivers, delivery drivers, real estate agents, and company and fleet vehicles. For the full picture, start with can you deduct car washes as a business expense or the car wash deduction FAQ.
Choosing and Switching Methods
Pub 463’s catch: to ever use the standard mileage rate on a vehicle, you must choose it in the first year the vehicle is in business service. After that you can switch to actual expenses (with straight-line depreciation), but if you started with actual expenses, standard mileage is off the table for that vehicle. Details in the vehicle deduction guide.
Recordkeeping Pub 463 Requires
Both methods demand contemporaneous records: date, destination, business purpose, and miles for every trip. Reconstructing a log at year end won’t survive an audit. Our recordkeeping guide covers what receipts to keep under the actual expense method.
Publication 463 Vehicle FAQ
Does Publication 463 say car washes are deductible?
Yes — under the actual expense method only, as a vehicle operating cost. Under the standard mileage rate, cleaning is already baked into the 70¢ figure.
Are parking fees and tolls deductible in addition to the standard mileage rate?
Yes. Business-related parking and tolls are the only costs Pub 463 lets you deduct on top of the mileage rate.
What’s the difference between Publication 463 and Tax Topic 510?
Tax Topic 510 is the short summary; Publication 463 is the full rulebook. They agree: actual car expenses include operating costs like washing, and the standard rate replaces them all.
Can I use the standard mileage rate on a car my spouse owns?
Generally yes for spouses filing jointly — but the first-year rule and mileage log requirements still apply. See the detailed answer in our standard mileage rate guide.
Educational purposes only — not tax advice. Source: IRS Publication 463. Consult a CPA for your specific situation.
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