Are Auto Loans Fixed or Variable?

When you take out an auto loan, your interest rate is typically fixed. However, there might also be the option of a variable interest rate.

Most consumers will choose a fixed rate for their auto loan financing because it offers predictability and stability when budgeting for their monthly payments. Fixed rates are also provided by more lenders, banks and credit unions than variable rates.

However, a variable interest rate could also offer some benefits, especially if interest rates are low when you first take out your loan. In addition, variable rates are potentially advantageous if you don’t plan to keep the vehicle long-term or don’t plan on holding the loan for an extended period.

Here’s what you need to know about both options.

What Are Fixed-Rate Auto Loans and Their Benefits?

A fixed-rate auto loan is based on an interest rate that does not change over the life of a loan. This applies to new loans and those who refinance their car loans. This type of interest rate is the most popular for car loans and is often used for mortgages and personal loans as well.

One of the best benefits of a fixed interest rate is that it makes budgeting easier. You know exactly how much your monthly payment will be, so you can plan accordingly. This predictability can be a big help when trying to add a second vehicle to your household, take on other large financial obligations or simply make ends meet.

woman sitting at desk, using a calculator and smiling

Another benefit of a fixed interest rate is that it protects you from changes in the market. You’re locked in at the lower rate if interest rates go up. But, on the other hand, if rates go down, you’re still stuck with the same payments and forfeit those potential savings.

That said, the biggest downside of a fixed interest rate is that you might end up paying more in interest over time if rates drop, especially if locked in at a higher-than-average rate to begin with. For example, according to research, Americans are paying up to 25 % more for their car loans than they were 10 years ago. So it’s essential to be informed, so you can make the best decision for your individual circumstances. If you do have a fixed rate car loan and the interest rates drop, you can always look into refinancing to lower your interest rate.

What Are Variable-Rate Auto Loans and Their Benefits?

A variable-rate auto loan is based on an interest rate that can change over time in response to market conditions. This movement is tied to an index or benchmark, such as the prime rate. Variable interest rates are also called adjustable interest rates and floating interest rates.

The biggest benefit of a variable interest rate is that it could save you money. When interest rates are low, you could get a lower monthly payment. Additionally, you can take advantage of falling interest rates without having to refinance. However, keep in mind that refinancing could still be an option. If that interests you, check with a refinance car loan calculator to see how much you could save.

If interest rates are unusually high when you purchase your vehicle and are predicted to fall, you might want to consider a variable-rate loan. In this case, you would be “betting” that interest rates will go down, which could save you money in the long run. This would require following governmental interest rate statistics and having both a sense of the market and an understanding of the risks.

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Of course, the biggest downside of a variable interest rate is that it could go up, resulting in a higher monthly payment. If this happens and you can’t afford the new payment, you might be forced to sell the car or default on the loan, which could hurt your credit score.

In addition, if rates rise sharply and you can still afford payments, you could end up with negative equity, where you owe more on your loan than the car is worth.

Nonetheless, a variable interest rate could be a good choice if you’re planning on selling the car or refinancing the loan within a few years, and interest rates are both low and steady. It could also be a good option if you’re comfortable with a little more risk in exchange for the potential to save money.

How Do You Know Which One Is Right for You?

The best way to decide whether a fixed or variable interest rate is right for you is to consider your plans for the future. For example, a fixed interest rate could be the best option if you plan on keeping the car for a long time and the current interest rates are low. This way, you lock in the low rate and don’t have to worry about market fluctuations.

On the other hand, if you’re not sure how long you’ll keep the car or if you think interest rates could go down, a variable interest rate could be the best option. However, remember that there’s more risk involved, so you need to be comfortable with that before choosing a variable interest rate.

Whichever option you decide to go for, be sure it’s the best fit for your individual circumstances.

How to Calculate Interest on a Car Loan

Buying a car is a significant financial commitment. In fact, car loans are the second largest financial commitment most people will make (the first being a home mortgage). Learning how to calculate interest on a car loan will help you sift through your options and choose the loan terms that are best for you and your budget.

The Elements of a Car Loan

When calculating how much interest you’ll pay on your car loan, you’ll need three pieces of information:

Amount of loan: Whether you are seeking a new loan or refinancing your existing car loan, you will need to know the exact amount that you will be financing, including the price of the vehicle and taxes, as well as any add-ons that you’ve chosen, such as a GAP waiver.

Your interest rate: When you apply for an auto loan, your lender will use information from your application to determine your interest rate. Interest rates depend on several factors, including economic conditions, as well as your credit score, income and the age of the car that you purchase. Some lenders use other criteria in determining your rate, which could include your educational background and work history.

Length of repayment: You’ll need to know the length of your repayment period. Auto loan terms are expressed in months instead of years, and auto loan terms typically range from 24 to 84 months, though other terms might be available.

Magnifying glass over percentage signs

Calculating Your Monthly Interest Payments

Car loans are amortized, which means that you’ll be paying your loan balance off in installments. This means that the interest you pay over the duration of your loan will be based on an ever-declining principal balance. Because your principal balance changes each month, so will the amount of your interest payment.

If you want to know what you are paying in interest each month, you’ll need to do the following:

  1. Begin with a straightforward calculation: Your interest rate (percentage) divided by how many payments you’ll make on the loan annually.
  2. When you have that number, multiply it by your loan’s balance.

This calculation will give you the amount of interest you’ll be paying each month. It’s important to note that this number reflects only the amount of interest you’ll pay that month. This will change each month during the duration of your loan repayment period.

Another thing to remember is that your monthly interest payment is only one portion of your monthly car loan payment. The other portion is what you are paying against the loan balance.

If you aren’t a numbers person and all this seems too complicated, you can check out the AUTOPAY refinance car loan calculator to get a quick calculation, plus your estimated savings if you opt to refinance at a lower rate.

Man checking credit score on mobile phone

Other Factors That Determine Affordability

If you’ve run these numbers and are experiencing a bit of “sticker shock” at how much interest you are (or will be) paying each month, keep these things in mind:

  1. As you pay down your loan, the percentage of each payment that goes toward interest decreases over time. This is because the amount of interest you pay is based on your loan balance. As the balance shrinks, so does the interest.
  2. There are things you can do to reduce the amount of interest you’ll pay on a loan. These include improving your credit score by making timely payments and paying down existing debt, buying a new car instead of a used vehicle and, if necessary, finding a co-signer for your loan.
  3. The larger your down payment on a vehicle, the smaller your balance will be. This can significantly reduce your interest payments.

Taking out a car loan or refinancing an existing loan can be a challenge, particularly when it comes to understanding your total costs. Make sure to shop around to get the loan you need with terms that you can afford.