What percentage of income should go to a car payment? The standard answer from financial planners is 10 to 15 percent of take-home pay for the payment itself, with all transportation costs combined held under 15 to 20 percent. That answer sounds simple, and it is. What is not simple is that the average new-car payment has sat above $700 since 2022, and roughly one in five new-car loans now tops $1,000 a month. At those prices, the percentage rules stop being trivia and start being the thing that decides whether the car fits your life.
What percentage of income should go to a car payment? The 10% to 15% rule
The rule uses take-home pay, the money that actually lands in your account, because that is what the payment comes out of. Divide your monthly take-home by 10 and by 6.67, roughly. More precisely: multiply monthly take-home by 0.10 for the conservative ceiling and 0.15 for the standard ceiling. On $60,000 of salary with about $3,750 a month of take-home pay, that is $375 to $563 a month for the car payment.
That is the payment alone. The second number matters more: total transportation costs, payment plus insurance, fuel, maintenance, and registration, should stay under 15% (the classic ceiling) and absolutely under 20%. This is where buyers get surprised. A $563 payment is inside the payment rule, but add $200 insurance, $180 fuel, and $60 maintenance and you are at $1,003 a month, nearly 27% of that $3,750 take-home. The payment rule is the first filter, not the verdict. If you want a shorthand that captures everything, salary divided by 120 gives your maximum total monthly car cost on gross income.
The stricter version: 20/3/8
The Money Guy Show's 20/3/8 rule takes a harder line: 20% down, pay the loan off in 3 years or less, and keep the payment under 8% of gross income. That 8% is measured against gross, not take-home, and it covers only the payment, not the running costs. On a $60,000 salary, the ceiling is $400 a month on a three-year loan.
Here is my honest opinion: 20/3/8 is the correct answer for 2026's prices and the wrong answer for most people's actual cars. With the average new car around $50,000, a median $84,000 household would need to put down 64%, about $32,000, to satisfy 20/3/8 on a three-year note at average rates. That is not a rule most households can follow; it is a rule that tells most households the new car does not fit. Which, honestly, is the rule doing its job.
Where the payment rule hides the real budget
Run the full monthly picture before you fall in love with a specific car. The components, roughly:
- Payment: the loan, governed by the 10-15% rule
- Insurance: often the biggest surprise, especially for newer or pricier cars; get a quote before buying
- Fuel or charging: driven by miles and efficiency, not by the sticker
- Maintenance and repairs: tires, brakes, oil, scheduled service; heavier on used cars
- Registration and fees: small but real, and easy to forget
And then the context: households on average spent 12.8% of income on transportation in 2024, already above the traditional 10% guideline for all-in costs. That number is a warning that "everyone else does it" is not a budget.
My take
Use 10% of take-home for the payment as the line you refuse to cross, and 15% of take-home for all-in transportation costs as the line you try to stay under. If you want to be strict, run the 20/3/8 check too and see how far apart the answers are. If the gap is enormous, the car is too much, not the rule. Test your numbers with the true cost of ownership before you shop: a luxury badge can add thousands a year in maintenance and insurance that the payment rule never sees.
Frequently asked questions
What percentage of income should go to a car payment?
Most financial planners put the monthly car payment at 10 to 15 percent of take-home (after-tax) pay, with all transportation costs combined at no more than 15 to 20 percent. The separate 20/3/8 rule uses a stricter 8 percent cap, measured against gross income.
Is 20% of income too much for a car payment?
For the payment alone, yes, that is high. Twenty percent is the upper bound for total transportation costs (payment plus insurance, fuel, maintenance, and registration), not for the loan payment by itself.
Should the car payment percentage be based on gross or take-home pay?
Take-home pay is the practical base for the 10-15% payment rule, since it is the money you actually spend. The stricter 20/3/8 rule instead caps the payment at 8% of gross income, which often lands in a similar place after taxes are accounted for.
What counts as transportation costs in these rules?
Everything the car costs: the loan payment, insurance, fuel or charging, maintenance and repairs, and registration fees. The payment is usually the biggest line, but insurance is often the surprise line that breaks the budget.
What is the average car payment in 2026?
The average monthly payment on new cars has been over $700 since 2022, and about 20% of new-car loans now carry payments of $1,000 or more. Households on average spent 12.8% of income on transportation in 2024, already above the traditional 10% guideline.