Car budget guide · from the dealership side of the desk
How much car can you afford? The honest math, by income and by payment.
The dealership answers this question for you in about four seconds: whatever the lender approves, stretched over whatever term makes the payment fit. That number is what they can sell you, not what you can afford. This guide gives you the other number: the one that leaves room for insurance, fuel, repairs and a bad month, worked out from your take-home pay, with tables you can read off and the math shown.
The short answer: how much car you can afford
Most people can afford a car payment of about 10 percent of their monthly take-home pay, and total car costs (payment, insurance, fuel, maintenance and a repair reserve) of no more than about 20 percent of it. At today’s rates, a 10 percent payment over a 60-month loan buys about five months of take-home pay in car, plus whatever you put down. On $4,000 a month in take-home pay, that is a payment near $400, about $20,000 financed, and an out-the-door price in the low twenties with a modest down payment.
Those are rules of thumb, not laws. Someone with no rent and no debt can go higher; someone with a student loan, a long commute and a new driver on the policy should go lower. What the rules do is stop the two mistakes that cost car buyers the most: shopping by the monthly payment instead of the price, and forgetting that the payment is only about half of what a car costs to own.
The rest of this guide shows the math behind the number, a table you can read your own budget off, what the sticker leaves out, how the down payment and the loan term change the answer, and what to do when the car you want does not fit. The car loan calculator and the true cost of ownership calculator do the arithmetic for your exact numbers, and nothing you type in them is sent anywhere.
The three rules of thumb, and which one to use
- The 10 percent rule (payment only)
- Keep the car payment at or under 10 percent of your monthly take-home pay. Simple, conservative and the best fit for most households with rent or a mortgage, because it leaves the other 90 percent for everything else a month throws at you. On $5,000 a month in take-home pay, that is a $500 payment.
- The 15 to 20 percent rule (everything the car costs)
- Keep the payment plus insurance, fuel, maintenance, tires, registration and parking at or under 15 to 20 percent of take-home pay. This is the one that catches the car that looks fine as a payment and turns out to cost $900 a month to run. A cheap car with high insurance and a thirsty engine can fail this test while a slightly dearer one passes it.
- The 20/4/10 rule
- Put at least 20 percent down, finance for no more than 4 years, and keep all car costs under 10 percent of your gross (before-tax) income. It is the strictest of the three and it is the one that keeps you out of negative equity, because a 20 percent down payment and a short loan mean you owe less than the car is worth from the first month. Few buyers manage all three parts; treat each part you can manage as a win. Our down payment guide covers when 20 percent is overkill.
- The ones to be careful with
- ‘A car should cost no more than half your annual salary’ and ‘no more than 35 percent of your gross income’ both size the car from the top down and ignore the rate, the term and your other bills. They are the generous end of the range. If a car passes the 35 percent test but fails the 20 percent all-in test, believe the second one.
- What the lender uses, and why it is not a budget
- Lenders approve on debt-to-income: most will take a car payment up to 15 to 20 percent of your gross monthly income, as long as all your debts together stay under roughly 40 to 50 percent of it. That is a credit decision, not a budget. On a $5,000 gross month it approves a $750 to $1,000 payment, two to three times what the 10 percent rule says. The gap between those numbers is where overextended car buyers come from.
How much car can I afford by income? Read it off this table
Illustrative numbers. Your rate, term and down payment move every column; the calculators run your own.
| Take-home pay | Payment at 10% | All car costs at 20% | Loan at 7%, 60 months | Out-the-door price with 10% down |
|---|---|---|---|---|
| $2,500 a month | $250 | $500 | $12,600 | $14,000 |
| $3,000 a month | $300 | $600 | $15,200 | $16,800 |
| $4,000 a month | $400 | $800 | $20,200 | $22,400 |
| $5,000 a month | $500 | $1,000 | $25,300 | $28,100 |
| $6,000 a month | $600 | $1,200 | $30,300 | $33,700 |
| $8,000 a month | $800 | $1,600 | $40,400 | $44,900 |
The loan column is what a payment at 10 percent of take-home pay finances over 60 months at a 7 percent APR, the kind of rate a buyer with good credit saw at a credit union in 2025. The out-the-door column adds a 10 percent down payment and is the total you pay for the car, with tax, title, registration and the doc fee already inside it. The sticker price that gets you there is lower, usually by 8 to 10 percent, because tax and fees are added on top of it.
The ‘all car costs’ column is the one most buyers skip. If your insurance quote on the exact car comes in at $180, fuel at $150 and upkeep at $70, that is $400 of the column gone before the payment, and the payment has to fit in what is left. Run it the other way round, cost first, payment last, and the car that fits may be a size smaller than you hoped. It will also still be in your driveway in year four.
How much car can I afford on my salary?
Salary questions (‘how much car can I afford on $60,000 a year?’) need one conversion first: take-home pay. After federal and state tax, Social Security and Medicare, a health plan and any retirement contribution, most people bring home somewhere around three-quarters of their salary, less in high-tax states and with a 401(k) contribution, more with children and credits. The table uses three-quarters as a round assumption. Your pay stub has the real figure, and the real figure is the one to use.
| Salary before tax | Take-home a month (about ¾) | Payment at 10% | Loan at 7%, 60 months | Out-the-door price with 10% down |
|---|---|---|---|---|
| $40,000 a year | about $2,500 | $250 | $12,600 | $14,000 |
| $50,000 a year | about $3,100 | $310 | $15,800 | $17,500 |
| $60,000 a year | about $3,800 | $380 | $18,900 | $21,000 |
| $75,000 a year | about $4,700 | $470 | $23,700 | $26,300 |
| $100,000 a year | about $6,300 | $630 | $31,600 | $35,100 |
Two things the salary table cannot see: your other fixed costs, and the second car. A couple with two incomes and two car payments should run each car against the household budget, not each salary against a car. And a buyer with no rent, no student loan and a six-month emergency fund can reasonably go above the 10 percent line; a buyer with all three should stay under it.
Why the monthly payment is the wrong number to shop by
A payment can be made to fit almost any car. The dealership does it by changing the term: the same $400 a month buys a very different amount of car over 48 months than over 84, and the longer loan costs thousands more in interest while keeping you upside down (owing more than the car is worth) for most of its life. That is why the first question at the desk is ‘what payment are you looking for?’ and why the right answer is the out-the-door price you decided on at home.
| Same $400 payment, 7% APR | Amount you can finance | Total interest | Total you pay |
|---|---|---|---|
| 36 months | $13,000 | $1,400 | $14,400 |
| 48 months | $16,700 | $2,500 | $19,200 |
| 60 months | $20,200 | $3,800 | $24,000 |
| 72 months | $23,500 | $5,300 | $28,800 |
| 84 months | $26,500 | $7,100 | $33,600 |
Read the table from the bottom up to see the trick. An 84-month loan lets the salesperson show you a car costing $10,000 more than the 48-month loan does, at the same payment, and you pay for that car for seven years, roughly twice as long as the average owner keeps one. Our guide to 72- versus 84-month loans has the negative-equity math by year, and the out-the-door price guide shows how to keep the conversation on the price instead.
The costs that are not on the sticker
- Sales tax, title and registration
- Sales tax runs from nothing in a handful of states to about 10 percent in the highest-tax cities, and it is charged on the price, usually after any trade-in credit. Title and registration are a one-time charge and then a yearly one. Budget 6 to 10 percent on top of the sticker for all three unless you live in a no-sales-tax state.
- The doc fee and add-ons
- The documentation fee is a dealer charge that ranges from under $100 in the states that cap it to more than $1,000 in the states that do not. Add-ons (nitrogen, etch, protection packages, service contracts) are optional and often arrive pre-printed on the worksheet. Both belong in the out-the-door price you negotiate, not in a payment you discover later. The add-ons guide prices each one.
- Insurance
- The cost most people guess wrong. Get a quote on the exact car (by VIN if you can) before you agree to anything: a sporty trim, a brand with high theft rates or a new driver on the policy can double it, and young drivers routinely see $150 to $400 a month. Our guide to insurance before you buy explains what moves the quote.
- Fuel or charging
- Your yearly miles divided by the car’s real-world mpg, times the price of fuel where you live. A commute of 15,000 miles a year costs about twice as much in a 20-mpg SUV as in a 40-mpg hybrid. An EV charged at home is usually cheaper per mile; on public fast chargers it is not. The true cost calculator does this line for gas and electric.
- Maintenance, tires and a repair reserve
- A new car under warranty needs oil, filters and a set of tires in the first few years. A used car out of warranty needs those plus a reserve: $50 to $100 a month set aside covers most of what a 6- to 10-year-old car throws at you, and a European luxury badge needs more. If the reserve is not in the budget, the first repair goes on a credit card, and the car is now costing you two interest rates.
- Depreciation and interest
- Neither shows up as a bill, and together they are usually the biggest cost of owning a car. A new car loses about a fifth of its value in the first year and roughly half by year five; the interest on a 7 percent, 60-month loan adds about 19 cents to every dollar you finance. AAA’s yearly ownership study puts the all-in cost of a typical new car above $12,000 a year, around $1,000 a month, once these are counted. That figure is why the ‘all car costs’ column exists.
- Parking, tolls, and the second key
- Small, real, and easy to forget: a monthly parking space, bridge tolls, the car wash, and the $300 to $500 for a second key if a used car came with one. Add what applies to you.
How much down payment do you need?
The classic advice is 20 percent down on a new car and 10 percent on a used one, and the reason is not the payment. It is the gap between what you owe and what the car is worth. A new car loses about a fifth of its value in the first year; with nothing down you are upside down the moment you drive off, and a total loss or a sudden need to sell leaves you writing a check to the lender. A 20 percent down payment covers that first-year drop, which is also why buyers who put 20 percent down rarely need GAP coverage.
A down payment also lowers the payment, by roughly $20 a month for every $1,000 you put down on a 60-month loan at 7 percent, and it shortens the time you spend upside down. What it should not do is empty the emergency fund: a car bought with every dollar you had is a car you cannot afford to repair. If 20 percent down and a healthy reserve are not both possible, keep the reserve, put down what you can, and buy a less expensive car. Our down payment guide works through the cases where less than 20 percent is fine, and the GAP guide explains what the coverage does and what it costs at the desk versus from your insurer.
How long should the car loan be?
Short enough that you are never far upside down, and no longer than you will keep the car. For most buyers that means 48 to 60 months. The average new-car loan in Experian’s 2025 reports runs about 68 months, and 72- and 84-month loans are now ordinary at the desk because they make expensive cars look affordable as a payment. They do that by charging you interest for longer and by keeping you underwater for four or five years out of six or seven.
A useful test: if the car only fits your budget at 72 or 84 months, it does not fit your budget. Drop a trim level, go a model year or two older, or wait and save a larger down payment. A buyer who can only afford a given car at 84 months is one surprise repair or one insurance increase from a loan they cannot carry, and there is no clean way out of an 84-month loan in year two. The one exception is a promotional rate from the manufacturer at 0 to 2.9 percent: a longer term at a near-zero rate costs little in interest, though it still ties up the car for that long. The rebate versus 0% calculator shows when that trade is worth taking.
What your credit score changes
The rate, and so the amount of car the same payment buys. In 2025, buyers with excellent credit saw new-car rates near 5 percent and used-car rates near 7 at the better lenders; buyers in the middle tiers saw 9 to 14; subprime buyers saw the high teens and worse. The same $400 payment stretches very differently across that range:
| Same $400 payment, 60 months | Amount you can finance | Total interest |
|---|---|---|
| 5% APR | $21,200 | $2,800 |
| 7% APR | $20,200 | $3,800 |
| 10% APR | $18,800 | $5,200 |
| 14% APR | $17,200 | $6,800 |
| 19% APR | $15,400 | $8,600 |
Two moves change the answer more than anything else on this page. The first is a pre-approval from a credit union or bank before you shop, so the rate is a number you bring rather than a number the dealer sets; the pre-approval guide walks through it, including why dealers can mark up the rate the lender approved. The second, for a buyer in a low tier, is time: six months of on-time payments on what you already owe can move you a tier, and a tier can be worth $2,000 of car at the same payment. Our guide to credit score tiers shows how lenders bucket you, and what a good APR looks like right now.
‘You’re approved’ is not the same as ‘you can afford it’
A dealership’s finance office can get most working adults approved for a payment well above the 10 percent line, because the lender is underwriting the loan, not your life. The lender sees your gross income and your other debts; it does not see your rent going up in March, the insurance quote you have not pulled yet, the daycare bill or the fact that you keep cars eight years. ‘You’re approved for $650’ is a statement about the bank’s risk appetite. It tells you nothing about whether $650 fits.
The honest sequence is the reverse of the dealership’s. Decide the all-in monthly number at home, subtract the insurance quote, fuel and upkeep, turn what is left into a loan amount at the rate on your pre-approval, add your down payment, and walk in with an out-the-door price. Then the only question the salesperson can ask is whether they have a car at that price, which is the question you wanted all along. Our real car budget worksheet lays this out line by line, and the is it time to buy guide asks the question before that one.
A worked example: a buyer with $4,000 a month in take-home pay
Worked example · illustrative numbers, not a quote
From take-home pay to an out-the-door price
| Take-home pay a month | $4,000 |
| All car costs, 20 percent ceiling | $800 |
| Insurance quote on the exact car (a 2021 compact SUV, two drivers) | − $160 |
| Fuel, 12,000 miles a year at 30 mpg | − $115 |
| Maintenance, tires and a repair reserve | − $75 |
| Left for the payment | $450 |
| The 10 percent rule says | $400 |
| Payment the buyer settles on | $400 |
| Loan that $400 finances at 7% over 60 months | $20,200 |
| Down payment saved | + $2,500 |
| Out-the-door price to shop for | $22,700 |
| Sticker price that gets there, after about 8 percent in tax and fees | about $21,000 |
The dealer has a nicer trim at $26,500 and offers it at the same $400 a month over 84 months. The payment fits; the car does not. That loan costs $7,100 in interest against $3,800 on the 60-month loan, runs two years longer than the buyer planned to keep the car, and sits upside down until about year five. The buyer keeps the $400 and the 60 months, and shops the list below for a car at the out-the-door price instead.
New, used or lease: what the budget buys
- Used, three to eight years old
- The most car per dollar for nearly everyone, because the first owner paid for the steepest depreciation. The budget needs a repair reserve and a pre-purchase inspection ($100 to $200, the best money in the whole purchase), and the rate on a used-car loan runs a point or two above a new-car rate. The new versus used guide runs the first-year figure, the one that changes minds.
- New
- Makes sense when a manufacturer rate or rebate closes most of the gap, you will keep the car eight to ten years, or you want a specific safety feature the used versions lack. Insurance is higher, depreciation is the biggest cost in year one, and the 20 percent down payment matters most here.
- Lease
- A lease fits a payment, not a budget: you pay for the depreciation and a finance charge and hand the car back. It can be the cheaper way to drive a new car for three years, especially on EVs with subsidized leases, and it is the wrong tool for a high-mileage driver or anyone who wants to own the car at the end. Run the lease versus buy math before a low payment decides for you.
If the car you want does not fit the budget
- Go one size, one trim or two model years down. The same model two years older is often 25 to 35 percent cheaper with most of its useful life left. Shop the used cars under $20,000 and under $15,000 shelves to see what the next band buys.
- Save a bigger down payment and buy later. Six months of setting aside the payment you planned to make proves the budget and lowers the loan. Our when to buy guide covers what timing really changes.
- Fix the rate before the car. A pre-approval, paying down a card, or waiting out a credit-report error can move you a tier, and a tier is worth real money at the same payment.
- Check the insurance class before you fall for the car. A different trim or a less-stolen model can take $50 to $100 a month off the quote.
- Do not fix it with the term. Stretching to 72 or 84 months is the dealership’s answer, and it costs the most. If it only fits at 84 months, it does not fit.
- Be careful with a co-signer. A co-signer gets you the approval, not the affordability, and they carry the loan if you cannot. The co-signer guide covers how to do it safely if you do.
- Skip the buy-here-pay-here lot unless a credit union has said no. The approval is easy; the price, the rate and the repossession terms are not. Our buy-here-pay-here guide has the real costs.
- Keep the car you have. A paid-off car that needs $1,500 of work is almost always cheaper than $500 a month for 60 months. The is it time to buy guide walks through the repair-or-replace math.
Cars that fit the budget, for sale now
Every car on cars.fmycar.com is listed by a dealership or a private seller with a price and photos, and the price-band pages below match the loan column in the tables above. Shortlist two or three cars under your out-the-door number (remember the sticker runs 8 to 10 percent under it), get an insurance quote on each, and run the checklist that follows. FMYCAR is not a dealer and takes no cut of the sale; the seller is who you buy from.
Do this
The budget, in the order it gets built.
Screenshot this. The guide is free.
- Start from monthly take-home pay (your pay stub), not salary and not the lender’s approval
- Set the all-in ceiling: about 20 percent of take-home pay for payment, insurance, fuel, upkeep and a repair reserve
- Get an insurance quote on the exact car, by VIN if you can, before you agree to anything
- Subtract insurance, fuel and upkeep; what is left is the most the payment can be (about 10 percent of take-home pay for most people)
- Get a pre-approval from a credit union or bank so the rate is yours, not the dealer’s
- Turn the payment into a loan amount at that rate over 60 months or less; the car loan calculator does it
- Add your down payment, keeping the emergency fund intact; that total is your out-the-door price
- Shop by out-the-door price, never by payment; the sticker should run 8 to 10 percent under it
- If the car only fits at 72 or 84 months, it does not fit; go down a trim, a year or a size
- Read the contract: amount financed, rate and term must match the budget you walked in with
Related reading
Your real car budget, worked out
Payment, insurance, fuel and upkeep on one worksheet.
Car loan pre-approval
Why a credit union usually beats dealer financing, and how to use the rate at the desk.
True cost of ownership calculator
Payment, insurance, fuel, maintenance and more, per month and per mile. Nothing you type is sent or saved.
More guides
How to negotiate a car price
What is realistic, the email that gets real quotes, what to say at each step at the desk, the lines you will hear and what to answer, and when to walk.
Trade-in value
The formula behind every appraisal, trade in vs sell privately with the tax credit, and how to get the top of the range.
All car buying guides
Eleven free long-form guides, each with a worked example and a checklist.
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Questions people ask about car budgets
How much car can I afford?
For most people, a payment of about 10 percent of monthly take-home pay, with everything the car costs (payment, insurance, fuel, upkeep) under about 20 percent of it. At a 7 percent rate over 60 months, a 10 percent payment finances about five months of take-home pay; add your down payment for the out-the-door price. On $4,000 a month that is about a $400 payment, about $20,000 financed and an out-the-door price in the low twenties.
What percentage of my income should go to a car payment?
About 10 percent of take-home pay for the payment alone, and 15 to 20 percent of take-home pay for the payment plus insurance, fuel, maintenance and a repair reserve. Lenders will approve a payment of 15 to 20 percent of gross income, but that is a credit limit, not a budget.
What is the 20/4/10 rule for buying a car?
Put at least 20 percent down, finance for no more than 4 years, and keep all car costs under 10 percent of your gross income. It is the strictest common rule and the one that keeps you from owing more than the car is worth. Each part you can manage helps, even if you cannot manage all three.
How much car can I afford on a $50,000 salary?
Roughly three-quarters of a $50,000 salary comes home, about $3,100 a month, so the 10 percent rule puts the payment near $310. At 7 percent over 60 months that finances about $15,800; with 10 percent down the out-the-door price is about $17,500. Use your real take-home figure, and lower it if insurance or other debts are high.
How much car can I afford with a $500 monthly payment?
About $25,300 financed at 7 percent over 60 months, $23,500 at 10 percent, or $29,300 at 7 percent over 72 months. Add your down payment for the out-the-door price, then take 8 to 10 percent off for the sticker. A $500 payment on the 10 percent rule needs about $5,000 a month in take-home pay.
Is a $700 car payment too much?
For most households, yes. A $700 payment is close to the average new-car payment in Experian’s 2025 reports (about $749; used cars averaged about $529), and on the 10 percent rule it needs around $7,000 a month in take-home pay with insurance and fuel on top. It fits a high income with low fixed costs; it does not fit a typical one.
How much should I spend on my first car?
A first car should sit well inside the rules, because insurance for a new or young driver can rival the payment. Many first-time buyers do best under $15,000 out the door, in a three-to-eight-year-old model with a strong reliability record, with the insurance quote pulled before the test drive. The first-car budget guide and the first-time buyer guide go step by step.
How much should I spend on a used car?
Set the budget the same way as for any car (payment at 10 percent of take-home pay, all costs under 20 percent) and add two lines a new car does not need: a repair reserve of $50 to $100 a month and a pre-purchase inspection before you buy. Used-car loan rates run a point or two above new-car rates, so the same payment finances a little less.
How much down payment should I put on a car?
Aim for 20 percent on a new car and 10 percent on a used one, which covers the first-year depreciation and keeps you from owing more than the car is worth. Every $1,000 down takes about $20 a month off a 60-month payment at 7 percent. Do not drain the emergency fund to get there; buy a cheaper car instead.
Should I take a 72- or 84-month loan to afford a nicer car?
No. The longer term is how the payment is made to fit a car that does not; it costs thousands more in interest and keeps you upside down for most of the loan. If a car only fits at 72 or 84 months, go down a trim, a model year or a size, or save a larger down payment. The exception is a manufacturer promotional rate near zero.
I was approved for the loan, so can I afford the car?
Not necessarily. Lenders approve on gross income and existing debts, typically allowing a car payment up to 15 to 20 percent of gross income. They do not see your rent, insurance, childcare or how long you keep cars. Decide the budget at home from take-home pay, then treat the approval as a ceiling you stay well under.
What is the average car payment right now?
In Experian’s second-quarter 2025 report, the average new-car payment was about $749 a month and the average used-car payment about $529, on average loans of roughly $42,000 (new) and $26,800 (used), with new-car terms averaging about 68 months. Averages are not budgets: many of those buyers are stretched, and a payment well under the average is a sign of a budget that works.
Should insurance be part of my car budget?
Yes, and it is the line most people get wrong. Get a quote on the exact car before you commit; a sporty trim, a frequently stolen model or a young driver can double it. Subtract the quote from your all-in ceiling before you decide the payment, not after.
Does FMYCAR sell cars or arrange car loans?
No. FMYCAR is not a dealer or a lender and takes no cut of any sale or loan. The cars on cars.fmycar.com are listed by dealerships and private sellers, the guides and calculators are free, and the paid Deal Review is an independent check of a deal you are about to sign.