How the 20-4-10 car shopping rule works

When buying a car, new or used, experts say that a particular frame can be a great starting point to keep costs low.

The “20-4-10” rule uses three components to help you determine whether a automobile purchase is affordable: the ideal down payment, the proposed maximum automatic credit time and the share of your income that experts should go to the monthly vehicle costs.

The frame not only helps you to stay within your budget, but some aspects may prevent you from being “underwater” or “upside down” in a car or from being more debt in a vehicle.

However, Chelsea Ransom-Cooper, the founding partner of Zenith Wealth Partners in Philadelphia and a certified financial planning officer, said, “There is always a wiggling room.”

It can be difficult to meet all the elements of the rule: for example, you may find it difficult to find a big down payment, given high vehicle prices, or you may need a longer credit time to reduce monthly payments.

However, remember that more money spent on payment of a car may remain less in your salary check to cope with important savings and investment goals such as creating an emergency fund or increasing your pension contributions.

“A car is a depreciation asset, so we want to make sure we’re putting more money to appreciate assets,” Ransom-Cooper, a member of the CNBC, a member of the CNBC. He said.

Moreover, the down payment “acts like a buffer” against depreciation, because for gaining equality in the vehicle, in accordance with Bankrate. Cars are depreciation, so they lose value over time, a factor that contributes to being underwater in a car loan.

“Lowering 20% ​​to the front, helping to prevent you from entering such a situation,” CFP Lee Baker, the founder and president of Claris Financial Advisors in Atlanta. He said.

The “4” in the frame means four years or 48 months of automobile loans. A shorter credit time means that you will have higher monthly payments, while you will pay the vehicle faster with less interest.

However, it is not unusual to see the drivers go in the opposite direction. Extending the duration of an automatic loan is one of the few ways to reduce monthly automatic costs, Edmunds Insights Director Ivan Drury, He recently told CNBC.

For example, if you earn $ 4,200 per month after tax and deductions and calculate 10% of this figure, you should not spend more than $ 420 per month for transportation costs. in accordance with For lending.

“Trying to stay as tight as possible to this number is a useful way to make sure you are not caught under water.” He said.

In practice, it can be difficult to apply. Households spent an average of $ 13,174 for transportation costs in 2023, the second largest after housing category. in accordance with A report dated 2024 by the Ministry of Transport. That year, transportation constituted approximately 17% of total expenditures.

“The average household, one of the purchased shipping products, devotes most of the transportation budget to buying, business and maintaining private vehicles” in accordance with to the report.

Ransom-Cooper, use the 20-4-10 rule as a guide to see how much you can really meet.

If you see that the 20 % down payment payment is very high and that the new vehicle is more “good to have”, consider buying the car in one or two years next year.

But if your car is broken soon and you really need a new vehicle to go to work, Ransom-Cooper, consider paying a smaller down payment and reducing other areas in your life to make other areas in your life possible.