Standard vs Actual Vehicle Deduction: Three Examples of Which One Wins
Three worked examples show which vehicle deduction method saves you more, when standard mileage wins, when actual expense wins, and why the choice matters
The IRS gives every self-employed driver two approved ways to deduct the cost of a business vehicle, and you get to keep the one that saves you more. The whole question of which vehicle deduction method saves you more comes down to a single comparison: the standard mileage total on one side, the actual cost total on the other. The Mileage Expense Ledger is built to show both numbers next to each other, so the choice is made by looking at two figures rather than guessing. What follows is three real examples of when each method comes out ahead, and why the decision is worth making with both numbers in front of you.
The two methods, briefly
Standard mileage is a single per-mile figure the IRS sets to cover the full operating cost of a vehicle: fuel, maintenance, insurance, registration, and depreciation, all rolled into one rate. Multiply business miles by the current IRS standard mileage rate and the deduction is done. The rate changes from year to year, so it is always worth confirming for the tax year being filed.
The actual expense method uses the real cost of running the vehicle instead. You total what the vehicle cost for the year, then multiply by the business-use share, which is business miles divided by total miles. The result is the deductible amount.
Example 1: standard mileage wins
A house cleaner drives a paid-off compact sedan that is cheap to run. Over the year the mileage log records 18,000 business miles out of 20,000 total, a 90% business-use share. The vehicle costs are modest: about $2,600 in gas, $1,300 in insurance, $900 in oil, service, and tires, and $200 in registration, roughly $5,000 in all. Because the car is old and paid off, the depreciation figure the accountant assigns is small. Run the actual method on that: about $5,000 in costs at 90% business use is close to a $4,500 deduction. The standard side is far larger. At the current IRS rate the standard column turns 18,000 business miles into roughly $12,000. For an efficient, paid-off car driven heavily for business, standard mileage wins by a wide margin, and it is the simpler of the two to keep.
Example 2: actual expense wins
A wedding photographer leases a large SUV to haul gear. The log records 6,000 business miles out of 10,000 total, a 60% business-use share. The costs are heavy: about $9,600 a year in lease payments, $3,400 in gas, $2,200 in insurance, $800 in repairs, $600 in tires, and $400 in registration, roughly $17,000 in all. A leased vehicle has no depreciation to enter, because the lease payment already carries the cost of the vehicle. Run the actual method: about $17,000 at 60% business use is around a $10,200 deduction. The standard side is much smaller. At the current rate, 6,000 business miles comes to roughly $4,000. Here the actual method more than doubles the deduction. An expensive or leased vehicle with high running costs and relatively few business miles is the classic case where actual comes out ahead.
Example 3: a close call, and why the first year matters
A freelance contractor buys a mid-range SUV in the spring and uses it for a mix of jobs. In its first year the log records 10,000 business miles out of 16,000 total, a business-use share of about 63%. The running costs come to roughly $5,600: gas, insurance, a service, and registration, with new tires still fine. The sheet applies the business-use share to those operating costs on its own, so about $3,500 of them carries into the actual total. On top of that sits depreciation, and this is the figure that changes everything. Depreciation is entered by the accountant, never calculated by the sheet, and it arrives as a finished number already figured on the business-use basis, so it adds straight to the actual total rather than being scaled a second time. In the first year it can be taken two very different ways. With ordinary depreciation the accountant's figure might add around $1,900, bringing the actual deduction near $5,400. At the current rate, 10,000 business miles gives a standard figure of around $7,000, so standard edges ahead in year one. The contractor could instead ask the accountant to take an accelerated first-year deduction, which could add several thousand more in depreciation and push the actual number well past standard for that one year. The catch is that taking accelerated depreciation locks the vehicle into the actual method for the rest of its working life. Starting with standard keeps the door open to switch later if costs climb. This is why the first-year choice matters, and why seeing both totals before committing is worth more than a rule of thumb.
The exact standard figures shift a little from year to year as the IRS updates the rate, and the Ledger always applies the correct one for each trip by its date. What rarely changes is which method wins for a given vehicle and driving pattern.
The rules that shape the choice
A few rules shape the decision, and the Mileage Expense Ledger is built to respect all of them. You pick one method per vehicle for the year, not a blend of the two. The first year matters most: choosing standard mileage in year one preserves the option to switch to actual in a later year, while taking accelerated depreciation in year one commits the vehicle to actual for the rest of its life. A leased vehicle locks to whichever method you choose for the full term of the lease, so the first decision carries the furthest there. Parking and tolls sit in their own bucket and deduct on top of whichever method you use, so they are never part of the standard-versus-actual comparison. And depreciation, the figure that often decides the actual side, is provided by your accountant and entered once. The sheet never calculates it. The Ledger records and totals. The choice stays with you and your accountant.
Where the two totals meet
The Mileage Expense Ledger is the complete vehicle product. The mileage log captures each trip on a flat form, one trip per submission, and applies the current IRS standard mileage rate to every trip by its date automatically, so the standard total is always current. The vehicle-expense side captures gas, repairs and maintenance, insurance, registration, tires, and the lease payment or depreciation figure, each entry dated. The Tax Summary then shows the standard-mileage total and the actual-expense total next to each other, so the larger number is easy to see at a glance. The sheet does not recommend one method or gate the other. It shows both, and the decision stays with the driver and the accountant.
When it is time to hand the year to an accountant, the Expense & Mileage Ledger + Reporting adds the reporting layer the Mileage Expense Ledger does not include: Email Tax Report sends the Tax Summary and the year's records as PDFs in a single email, and Tab Export saves each tab to Drive organized by tab and year. The same upgrade also adds the other business expense categories beyond the vehicle, for drivers whose taxes reach past the car.
The Mileage Expense Ledger holds many years of records in a single file, so there is no need to wait for January or start a fresh file to begin. Every trip and every cost is entered with its own date, past dates included, and lands in the correct tax year automatically. It is a one-time purchase that lives in a personal Google Drive, not a subscription that has to be renewed to keep the records readable.
This article is general information, not tax or legal advice. Confirm the current rate, the method choice, and how either applies to a specific vehicle and business with an accountant.