The figure everyone quotes is gross. The large public dealer groups reported $1,634 of used vehicle gross profit per vehicle retailed in Q2 2026, and a small lot that reads that number tends to assume it is doing fine if it clears something close to it.
It is not the number that pays the rent. Gross is what the deal made. Net is what the business made after the deal paid for everything the business needs to exist, and on a one-person lot the gap between the two is wide enough to turn a good-looking year into a bad one. Here is the arithmetic from gross to net, one car at a time, with the lines that get forgotten.
Start with an honest gross
Gross profit on a car is the sale price minus the full cost of the car. Not the purchase price: the full cost, including the buyer fee, transport, parts, labour at a rate, detail, listing and title work. The true cost of a car prices those lines; on a cheap car they add 15 to 25% to the hammer price.
A lot that computes gross as sale minus purchase price starts the whole calculation several hundred dollars too high per car, and every number that follows inherits the error. What is a good gross profit per car covers the published benchmarks and why the industry average is the wrong target; for the rest of this article the example car makes $1,600 of honest gross.
Subtract the costs that belong to this car
Some costs are neither “the car” nor “the lot”. They happen because of this car, for the days this car was here, and they belong on it.
Floor plan interest and fees, if the car was floored. A floor plan is a line of credit against inventory, repaid when the car sells, with curtailment payments on a schedule as the car ages. A car floored for 60 days carries two months of interest plus whatever the lender charges per unit; what a floor plan costs per day does the arithmetic. If you bought with cash, the cost is the return that cash could have earned elsewhere, which is smaller but not zero.
The one-car share of advertising that was spent on this car: a paid listing, a boosted post.
The surprise. The sensor that failed on the test drive, the second set of tires, the key. If it happened on this car, it is this car’s cost, and a lot that has no line for it has a gross that is too high by a few hundred dollars on every third car.
For the example: $90 of floor plan cost, $35 of listing, $120 of surprise. Gross after car-specific costs: $1,355.
Subtract the car’s share of the lot
This is the subtraction small dealers skip, because the bills arrive monthly and the cars sell one at a time. Add up the fixed costs of the lot for a month. What a one-person lot costs per month builds the list; for a modest lot in a cheap location it runs:
| Monthly overhead | Example |
|---|---|
| Lot or office lease | $1,500 |
| Garage liability and lot insurance | $450 |
| Dealer licence, bond and plates, spread over the year | $150 |
| Software, phone, internet | $120 |
| Advertising not tied to one car | $300 |
| Accountant, bank fees, misc | $180 |
| Total | $2,700 |
Divide by the cars sold that month. Six cars: $450 per car. The example car nets $905 after overhead.
Now watch what volume does to the same car. At three cars that month, the overhead share is $900 and the car nets $455. At twelve cars it is $225 and the car nets $1,130. Nothing about the car changed. The net profit per car is as much a function of how many cars the lot sold as of how well it bought this one, which is why “what is a good net per car” has no answer without a volume beside it.
Subtract your own pay
The owner of a one-person lot is the buyer, the detailer, the salesperson and the bookkeeper. If the business does not pay for that, the net per car is not a business profit; it is wages in disguise.
Put a number on the month, even a modest one, and divide it by the cars. $3,000 a month across six cars is $500 per car. The example car now nets $405 as a business. Across six cars that is $2,430 of business profit in the month, after the owner was paid $3,000. Whether that is good depends on what the capital in the cars could have earned doing something else, and on how many months look like this one.
Then tax
Net profit on Schedule C carries self-employment tax of 15.3% on net earnings from the business, plus income tax at your bracket. A rule of thumb many small operators use is to set aside around 30% of real profit on the day the car sells. Car flipping taxes covers what the return expects and car flipping bookkeeping covers why cars are inventory rather than expenses, which changes when the cost of a car is recognised.
The whole walk on one car
| Line | Amount |
|---|---|
| Honest gross (sale minus full car cost) | $1,600 |
| Floor plan, listing, surprise | $245 |
| Share of monthly overhead (six cars) | $450 |
| Share of owner’s pay (six cars) | $500 |
| Net profit to the business, before tax | $405 |
From $1,600 to $405, and nothing in between was unusual. A lot that sells four cars a month on the same numbers nets about $80 per car as a business. A lot that sells ten nets about $690. The car is the same car.
What the number is for
Net profit per car is not a scorecard to compare with other dealers. It is the number that answers three questions about your own lot.
Whether the lot works at its current volume. If the business net is near zero at the volume you actually sell, the choice is more cars, less overhead or a different business, and no amount of better buying fixes it on its own.
Which cars to buy. Net per car combined with days held gives profit per day of capital, which is the figure days on the lot argues for: a $1,400 profit in 24 days is $58 a day; a $2,200 profit in 96 days is $23. The second car looks better on a sales report and is worse for the business.
What a bad car costs. One car that loses $800 at gross does not cost $800. It costs $800 plus its share of the overhead and the owner’s pay it was supposed to carry, and it pushes the month’s overhead onto fewer good cars. That is why the aged inventory playbook treats a car that will not sell as a decision rather than a wait.
Where the number comes from
Every line above is a record. Gross needs every receipt on the car. The car-specific costs need the floor plan days and the listing fees logged against the VIN. The overhead share needs one list of the month’s bills and a count of cars sold. If any of those lives in memory, the net per car is a guess.
The free car flipping spreadsheet keeps the per-car side with a sold flag and days held, and a monthly overhead line can be added beside it. The Deelary app keeps every cost on the car it belongs to, from the receipt photographed at the counter, and reports real profit and days held per sale and per month, which is the two inputs the overhead division needs. The five numbers to check every Monday are the short version of this article, run weekly.
Frequently asked questions
What is the net profit per car for a used car dealer?
It is the gross profit on the car minus every cost that went into that car and minus the car's share of the lot's overheads. Public dealer groups reported about $1,634 of used gross per vehicle retailed in Q2 2026. A small independent lot that clears that gross and sells eight cars a month against $4,000 of overheads nets roughly $700 to $900 per car before tax. Below four cars a month the overhead eats most of the gross.
What is the difference between gross profit and net profit per car?
Gross is sale price minus what the car cost you, including reconditioning. Net takes the rest out: rent, insurance, licence and bond, software, advertising, floor plan interest, your own pay and a share of every other bill the lot has, divided by the cars you sold. Gross is what the deal made. Net is what the business made.
How do I allocate overheads to a car?
Add up the month's fixed costs and divide by the number of cars sold that month. Six cars against $3,600 of overheads is $600 per car. That number moves with volume, which is the point: the same $1,600 gross is a good month at twelve cars and a loss at three.
What net profit per car should a small lot aim for?
Enough that cars times net covers your own pay with something left for tax, bad cars and growth. Many small lots find that below about $600 net per car, after allocated overhead and before the owner's pay, the business is paying the owner less than a job would. The target is yours to set from your own numbers, not from a published average.
Does floor plan interest count against net profit per car?
Yes, and it belongs on the specific car that was floored, by the days it was floored. A car on a floor plan for 60 days carries two months of interest plus any curtailment or fee, and that is a cost of that car, not an overhead of the lot.
How do I find my own net profit per car?
Record every car with its full cost, every month's overheads in one place, and divide. The spreadsheet on this site does it for a few cars; the app does it per car as receipts land, with the days held and the real profit on each sale, so the monthly number is a report rather than a reconstruction.