I must live in a bubble. Because in my circle, I don't know anybody who has a car worth more than 1/10th of their annual gross income.
- My dad drives a 28 year old car that's worth maybe $500 and he has a government pension worth at least 100X that.
- I drive an 11 year old car worth maybe $15,000 and my passive income is more than 10X that.
- My friend drives a 10 year old Tesla Model S worth maybe $16,000 but makes over $5 million a year.
- A neighbor just paid off his house and celebrated by buying a three-year-old Honda Civic. He's 42 years old and already semi-retired.
I came up with the 1/10th rule for car buying over 15 years ago to help people achieve financial freedom sooner. Thousands have followed this standard rule since, but millions more have not.
If you had invested $60,000 back in 2012 in the S&P 500, you would have about $405,000 today. But if you used that $60,000 to buy a 5 Series BMW, it'd be worth less than $9,000 today. Yet people still insist on buying cars for absurd amounts while they are guaranteed to depreciate and rack up ongoing maintenance expenses.
A car is the number one personal finance killer for most Americans. Therefore, your car payment is also the main roadblock you have to financial freedom.
Your Car Payment Crowds Out Investments
When you have a car payment, that money gets sucked into paying off a depreciating asset rather than investing in a potentially appreciating one. The car payment also becomes a distraction. It's one more financial account you have to stay on top of, instead of staying on top of your investments.
I found this insightful video on Twitter that highlights how a car payment can hold you financially back. She is most likely joking about her huge car payment, but it's worth having a discussion anyway because there are some folks in a similar situation. Have a watch and listen:
This example hits home because my wife is looking to become a full-time preschool or kindergarten teacher. So far, she's worked as a substitute teacher for $24 an hour for four days over the past month. If she works 40 hours a week, 50 weeks a year, she will gross $48,000 a year. This is on top of online school she is currently taking plus homework.
The woman in this video is a top tier kindergarten teacher earning $7,500 a month, or $90,000 a year after taxes. Kudos to her, especially if she doesn't live in an expensive city like San Francisco, LA, Seattle, or New York. Also, I like how she is spending $251/month on a gym membership and a personal trainer. Exercise is crucial for a better life.
However, with a $1,548 monthly car payment on her Mercedes Benz G Wagon, she doesn't have much left each month. In fact, she ends up at negative $124, which she borrows from a friend.
Used To Own A G-Wagon Myself
It is funny, because when I was 25 I foolishly bought a G Wagon in 2002 for $75,000. I had just gotten a raise to Associate with a base salary of $80,000 (up from $55,000) and a guaranteed bonus from coming over to Credit Suisse in San Francisco from Goldman Sachs in NYC. As a naive young man, I decided to blow a ton of money on a car I did not need.
I thought it was a steal since G500s were selling for $150,000 out of a dealership in Santa Fe, New Mexico the year before. That dealership had held the exclusive import rights, which Mercedes bought out. After only one year I got rid of my G Wagon once I decided to buy a condo. The thing was too tall to fit in the garage. Ultimately, I took a $17,000 bath on it.
It was actually that experience that led me to come up with the 1/10th rule for car buying. I remember seeing the car saleswoman raise her arms with joy and high-five her manager once I bought the car. I did not want anybody else to go through the same financial stupidity I had just put myself through.
Nothing Wrong With A $9,000 Car Instead
School teachers are the best. They have the most important occupation in the world and are therefore underpaid. But G Wagons cost between $150,000 and $200,000 today, which is 167% to 220% of her annual salary. That is a far cry from my recommendation of spending 10% of your salary on a car.
Kindergartners are not going to give you more gold stars because you showed up in a G Wagon. In fact, their parents might start asking some uncomfortable questions when they see their kid's teacher pulling into the parking lot in a $150,000 SUV.
A second-hand $9,000 vehicle would work just fine for this teacher making $90,000. There are plenty of models to choose from.
The X Factor: Working Spouse
What gives me comfort about this situation is that this kindergarten teacher has a spouse who paid her gas bill. And given that I believe people are generally smart and rational over the long run, it stands to reason her spouse likely makes enough money that she felt secure buying a $150,000 vehicle with a $1,548 monthly car payment.
Based on my 1/10th rule, their household income should be somewhere between $1.5 and $2 million a year. So it is possible her husband clears more than $1.41 million a year, which puts him in the top 0.1% of earners. So awesome if he does.
Even if they ignore my 1/10th rule entirely and spend closer to 20% of their household income on the purchase price of a car (1/5th), they are likely making $750,000 to $1 million combined. Not bad as a top 1% income earner.
I refuse to believe that with all the free financial education out there, this household would purposefully torpedo their finances and sentence themselves to working forever just to fund luxury expenses. And then, to make a social media video about it would be illogical, which is why I'm pretty sure she is joking for views.
After all, investing $150,000 today at an 8% annual return leads to $323,850 after 10 years. That's a nice chunk of change!
Make Rational Decisions And You Will Be Financially OK
At the start of this article I was surprised by her car payment. But thinking through it logically, this teacher and her spouse will probably be fine. She has friends who will float her when she runs short. She has a husband covering her gas and extras.
Ultimately she'll be fine. Because if this car payment were true and things get tight, or she decides she wants out of teaching sooner, she will logically sell the car and downgrade her expenses. Until then, she will love pulling up to school in a $150,000+ automobile and soaking in every bit of attention that comes her way. At this moment, those benefits outweigh the costs for her. And that is perfectly rational. You do you.

There is one thing I do want to flag though, and that is her house to car ratio is completely out of whack.
One of the quiet traps of renting is having more monthly cash flow, which makes it tempting to spend on things like a fancy car. That is exactly what I did the first three years out of college. I bought a Volvo 850 GLT, BMW 5.40, BMW M3, and a G-Wagon as a car fanatic. Easy to do when you have no mortgage staring you down.
If she and her husband want to genuinely improve their odds at financial independence, they should get neutral on real estate by owning their primary residence. After that, get the house to car ratio to 50 or below. With a $9,000 car and a ratio of 30, all she needs is a $450,000 house to hit that hurdle. Otherwise it is work forever until death, which sounds dramatic but is simply math.
Reader Questions And Suggestions
Readers, why do some people take out massive car payments on an asset they know will only go down in value? Do you think car payments are the most common roadblock to financial independence? Why not just buy a cheaper second hand car and invest the difference? Nobody is stopping you either way. Just know the tradeoffs.
Instead of buying an expensive car with a large car payment, invest that money in the S&P 500, bonds, and real estate. Ten years later you will be glad you did. Personally I am dollar cost averaging into Fundrise commercial real estate right now because valuations are low compared to stocks. With four years of underbuilding due to high interest rates, I expect rent and pricing pressure to rise in the coming years.
Fundrise is a long-time sponsor of Financial Samurai and Financial Samurai is a six-figure investor in Fundrise products. I'm looking to diversify and earn more passive real estate income given managing rental properties is a PITA.

There is a case to be made about vehicle safety, especially with children. Younger kids, I worried about restraints and appropriate airbags. With teenage drivers, some of the automated safety aids (auto emergency braking for example) could be the difference between life, death, or serious inury. Or just as bad, causing life, death, serious injury to someone else. That technology moves fast. Not disagreeing with your rule, just something that we consider as well.
For sure safety is a consideration, and should not be underemphasized. After 10 years, the airbags might not even deploy!
But with my car 11 years old, it still feels quite safe with new tires and scheduled maintainance. Maybe I’m fooling myself, and can do much better. Safety is my biggest concern for sure.
I bought a new honda minivan for 45k last year and we own a mazda worth ~7k. We “only” make 200k but I am confident and happy with our decision. We did it after we paid off our house and built a very healthy net worth.
I told myself that once I was a millionaire, I would buy a new car. We are so good at delayed gratification and this was worth it and I have zero regrets.
I’m glad you have zero regrets! One of my main goals is to help protect people from buyer’s remorse.
You can now calculate your House-to-Car Ratio. Try to get it to 50 or higher!
I own a home worth 1 million with 400k remaining mortgage. Also own a rental worth 600k free & clear. I own a 2014 sequoia worth around 24k today & 2021 rav4 prime worth around 35k today. household income around 320K. Not sure if I am owning too much car. clearly does not pass your 10% rule. should i sell 1 car?
If you like your cars, at this point, I would just keep on holding your cars until it’s bluebook value as well below 10% of your gross annual income. It’s the easiest way.
Sounds like you’re doing great! Especially with the payoff rental. Congrats!
to say nothing of the yearly personal property tax we pay in Virginia based on the assessed car value and the hike in insurance premiums you will experience. Monthly payment is only part of the equation.
I added a 70k car and added 1,500 a year in insurance and $1,500 in PP taxes per year.
Remind me again what type of car you got for $70,000?
I love the financial sensibility and can’t wait to read the comments justifying why they need to blow their hard earned money on outrageously expensive cars, and those that also make this rule work for them.
We currently own 3 vehicles. A 2003 Mazda minivan that we bought new; a 2009 Volvo wagon we bought used (I think in 2016?) for $7K; and a 2013 Honda bought new. I also had a 2006 Volvo I bought used for $6k that still ran great when I donated it to charity.
For at least a decade prior to my retirement when we were buying these used cars (and holding our old workhorses) my income was well over $300k to $400k per year, so we could certainly “afford” to buy new cars. Flashy new stuff just wasn’t our style and made no sense to us.
I’ll never buy a new car again, even in retirement with a healthy net worth. Your 1/10th rule is spot on, and we’ve gifted our adult children with this sensible approach to what should be a no-brainer financial decision!
Nice work with the cars while making $300K-$400K a year!
You brought up something I haven’t fully appreciated until now: the fact that you’ve “gifted your adult children with this sensible approach.”
We have young children, and the are extremely observant of what their parents do and say. During my electrical gremlin phase in late 2025/early 2026, I told them about the cost to fix the car and all the problems and weighed whether to spend money fixing or just buying new, as I also took them to the car dealership a lot after swimming/tennis camp. They always chose to “save money and fix”!
So by actually holding onto the car for years longer (actions following thought), I can’t imagine them splurging in the future on a new car. And as a result, I’m now less worried about them splurging their money. Yes! New post coming. Thanks for the inspiration!
Awesome! Can’t wait to read the new post.
I LOVE LOVE this post Sam! We’ve lost our common sense as Americans as to “living within their means” in terms of payments. How interesting about the kindergarten teacher buying a GWagon, it took us 55 years to buy one!
Long time lurker, first time poster…I think you maybe missing the point about cars. Just like everything else, it is a need vs want. Yes, frugality has its undeniable benefits. If income doesn’t justify, would totally agree with staying within one’s means. Your Range Rover is nice and all, but would never justify its expense over a much more reasonably priced yet functional Mazda, Subaru, Honda or Toyota. I also would place safety and security for oneself and family ahead of trying to run the car into the ground especially if one is comfortably secure financially. I also think buying more rather keeping what you have is wasteful and not environmentally friendly. There are many aspects to it. For how you have so nicely described your life and current state, a reliable car/suv that either doesn’t breakdown or cost is relatively low to fix seems more prudent than trying to run the car into the ground. A burst tire or critical part on the highway or remote travel alone or with family just ain’t worth it imo if you are able to have a car with lower total mileage…
Thanks for sharing. If you don’t mind sharing your car, its year, your income and where you are on your FI journey it would provide great perspective from where you are coming from.
Cheers
Sam, What is your opinion on a lease where the cash not used to purchase the vehicle outright is invested? Do you have any heuristic for this decision?
I’ve become indifferent on leasing or financing over the years as long as the car is worth 1/10 of your gross annual income or less.
If you can write off your lease as a business expense, that’s always nice.
Related: Multiple Options For Terminating A Lease
Going on 15 years with my 2011 4Runner which now has 273k miles on it. Paid it off after 1 year. I take it into the shop for routine maintenance as recommended and the mechanic says I’ll like get another 200k miles before it kicks the bucket.
Love the 2011 4Runner! One of my favorites of all time.
I’m just hoping my 2015 RR Sport gets to 100,000 miles lol. It’s got 68,500 so far. So, 4 more years at my pace.
Sounds good, I may just have to run an experiment. I make about $150k (wife about $75k) and kind of looking for a new vehicle. Should i be using household income or just my $150k? I’ve mostly had trucks cause of rentals, bikes and always doing a project. However trucks are expensive and I could mostly do what I need with a mid sized SUV. I’ll also need to research reliable older vehicles. I’ll start looking. I may have to look into an older 4 Runner like CMAC
Use household income as you guys are a unit.
Hi Sam, while I appreciate the 1/10 rule in theory, how does this fit for all those people with incomes under $100k in the context of reliability? Where is that sweet spot for value and reliability? I think that it may be worth it (at that income level) to buy something new like $30-$40k IF you keep it for as long as possible. I think the bigger issue with vehicles is the constant and too early turnover The early ownership years would sting but if you keep it for 10+ years, i’d imagine the average or annual expense would make just as much sense.
There are an endless number of reliable secondhand vehicles for under $10,000. Honda Civic, Toyota Corolla, Honda Fits, the likes.
Two cars ago, I bought an $8,500 secondhand 5-year old Land Rover Discovery II and drove it for 10 years. It was reliable enough to drive for that long, and Land Rover has one of the worst reliability ratings. I think people are fooling their themselves thinking they cannot find a reliable car under $30,000.
And yes, if you’ve already spent way too much car, owning the car long enough to get it to be worth less than 10% of your gross annual income is a good alternative.
The caption on her TikTok video said she was joking and she knew people wouldn’t read it ..