Vehicle Expense Records for the Actual Expense Method

Updated November 7, 2026. Quick answer: If you deduct actual car expenses instead of the standard mileage rate, you keep a record of every cost and you still keep a mileage log, because the deduction is the business share of the total. Publication 463 divides the expenses between business and personal use by the miles driven for each purpose, so the year’s total miles is the denominator under every receipt. A pile of gas and repair receipts with no log cannot support a business percentage.

What the actual method adds to the mileage log

This page reads the primary sources linked under Sources, as retrieved on November 6 and 7, 2026. Publication 463 is the 2025 edition.

Publication 463 sets out the choice: “If you don’t use the standard mileage rate, you may be able to deduct your actual car expenses.” It lists depreciation, lease payments, registration fees, licenses, insurance, repairs, gas, garage rent, tires, oil, tolls and parking fees as actual car expenses. For a car used for both purposes it adds “If you use your car for both business and personal purposes, you must divide your expenses between business and personal use.” “You can divide your expense based on the miles driven for each purpose.” Its example is a contractor who drives 20,000 miles with 12,000 for business: “You can claim only 60% (12,000 ÷ 20,000) of the cost of operating your car as a business expense.” The percentage comes from the mileage log, and the dollars come from the receipts.

A record for each cost

Publication 463 asks for the proof in two layers. The record: “You should keep the proof you need in an account book, diary, log, statement of expense, trip sheets, or similar record.” And the paper behind it: “You must generally have documentary evidence such as receipts, canceled checks, or bills, to support your expenses.” The publication then lists exceptions, including “Your expense, other than lodging, is less than $75.” This page’s reading of the two passages: the $75 exception relaxes the receipt, not the record, so a small fuel purchase still gets a line in your log or spreadsheet with its date, place and amount.

Cost	What proves it	Note
Fuel, oil, tires	Receipt, or a card or bank statement line plus a note	Date, place, amount; one line each
Repairs and maintenance	Itemized invoice	Keep the invoice, not only the card slip
Insurance, registration, licenses	Bill or renewal notice and the payment record	Dated by the period it covers
Lease payments	Lease agreement and payment statements	Keep the agreement for the whole lease
Tolls and parking	Receipt, or the toll account statement	Parking at your place of business is commuting, not a business cost
Depreciation	Purchase paperwork, date placed in service, business-use share	See the Form 4562 records page

The mileage log does not go away

Even a car that is fully depreciated keeps its record duty: “If you have fully depreciated a car that you still use in your business, you can continue to claim your other actual car expenses. Continue to keep records, as explained later in chapter 5.” For a car in the depreciation period the publication adds “You must keep records of the business use of your car for each year of the recovery period.” Publication 946 says the same of listed property generally: “You must keep records showing the business, investment, and personal use of your property.” The elements a log has to show are on mileage log requirements.

Choosing a method: the first-year rule

The choice is not free every year. “If you want to use the standard mileage rate for a car you own, you must choose to use it in the first year the car is available for use in your business.” Once a year is on the standard rate, “If you use the standard mileage rate for a year, you can’t deduct your actual car expenses for that year.” The publication also says “If you qualify to use both methods, you may want to figure your deduction both ways to see which gives you a larger deduction.” You can only figure it both ways if you kept both the mileage and the cost records, which is the practical case for keeping receipts in a year you expect to use the mileage rate. The rate itself is on the 2026 standard mileage rate.

Where the vehicle information lands on the return

The Schedule C instructions say “If you claim any car and truck expenses, you must provide certain information on the use of your vehicle by completing one of the following.” One is Schedule C Part IV, and the other is “Complete Form 4562, Part V, if you are claiming depreciation on your vehicle or you are required to file Form 4562 for any other reason”. The line-by-line walk-through is on Schedule C Part IV, lines 43 to 47 and Form 4562 Part V.

Where an app fits

The log and the receipts are two different records, and a tool may cover one or both. SparkReceipt’s pricing page lists “Mileage tracking and expense reports” among the Pro plan’s features, and its home page says the phone app can log a trip by GPS. Dext’s US home page says you can send receipts, invoices and statements by mobile, email, WhatsApp or desktop. These are the vendors’ statements; this page has not used either product. A paper log in the glove box, a spreadsheet and a folder of photographed receipts meet the same test, which is whether the elements above are present and were written down at or near the time.

Common mistakes

Keeping fuel and repair receipts but no mileage log. Without total miles and business miles there is no business percentage to apply.
Dropping the receipts in a year you used the mileage rate, then finding you cannot compare the two methods or switch later.
Treating the $75 exception as permission to keep no record of a small purchase.
Counting parking at your place of business as a business cost; Publication 463 treats it as a commuting expense.

Sources

Read from the IRS documents linked above on November 7, 2026. General information, not tax advice. Your own facts decide the outcome, and a preparer, the account provider or the IRS is the right place to confirm anything consequential.