APR vs Interest Rate
When the interest rate and annual percentage rate (APR) are calculated for a loan — especially a large one — the two can produce very different numbers, so it’s important to know the difference when evaluating what a loan will cost you.
Basically, the interest rate is the cost of borrowing money, and the APR is the total cost, including lender fees and any other charges.
Let’s look at interest rates vs. APRs for loans, and student loans in particular.
Key Points
• The interest rate is the cost of borrowing the principal amount, expressed as a percentage.
• The annual percentage rate (APR) includes the interest rate plus additional fees, providing a total cost view.
• Higher interest rates result in higher monthly payments and total costs over the loan term.
• Additional fees in the APR include closing costs, origination fees, and mortgage points.
• Considering both interest rate and APR is crucial for making informed loan decisions.
What Is an Interest Rate?
An interest rate is the rate you pay to borrow money, expressed as a percentage of the principal. Generally, an interest rate is determined by market factors, your credit score and financial profile, and the loan’s repayment terms, among other things.
How Interest Rates Work
Most people who take out a home mortgage loan opt for a fixed-rate mortgage. The borrower repays the amount borrowed, plus interest, in equal monthly installment payments over a period of 10, 15, 20, or 30 years. The higher the interest rate, the more they will pay each month and over the life of the loan. To see how interest rates affect payment amounts, try plugging different rate numbers into a mortgage calculator.
Some homebuyers opt for an adjustable-rate mortgage. In this scenario, there is typically an introductory period with an interest rate that might be lower than the available rate on a fixed-rate loan. But after that, the rate can periodically adjust (up or down), following market rates.
What Is APR?
If a loan were to have no other fees, hidden or otherwise, the interest rate and APR could be the same number. But because most loans have fees, the numbers are usually different.
How APRs Work
An APR is the total cost of the loan, including fees and other charges, expressed as an annual percentage. Compared with a basic interest rate, an APR provides borrowers with a more comprehensive picture of the total costs of the loan. The bulk of mortgage fees come in the form of closing costs and origination fees. Generally, closing costs average 3% to 6% of your mortgage loan principal, but each lender is different. Some borrowers also pay for mortgage points, also known as discount points, to lower the interest on their home loan. All of this would factor into the APR. Understanding these costs can help you get a clear picture of the total cost of a loan.
The federal Truth in Lending Act requires lenders to disclose a loan’s APR when they advertise its interest rate. In most circumstances, the APR will be higher than the interest rate. If it’s not, it’s generally because of some sort of rebate offered by the lender. If you notice this type of discrepancy, ask the lender to explain.
APR vs. Interest Rate Calculation
The bottom line: The interest rate percentage and the APR will be different if there are fees (like origination fees) associated with your loan.
How is APR Calculated?
To calculate APR, you first need to add the interest and the total fees for your loan. Then you divide by the principal amount borrowed. Divide the result by the total number of days in your loan term (for a 20-year loan, for example, you would divide by 7,300). Multiply the result by 365 (to get a yearly number) and then again by 100 (to arrive at an APR percentage).
Here’s the APR formula:
APR = ((Interest + Fees / Loan amount) / Number of days in loan term) x 365 x 100
Let’s say you’re comparing loan offers with similar interest rates. By looking at the APR, you should be able to see which loan may be more cost-effective, because typically the loan with the lowest APR will be the loan with the lowest added costs.
So when comparing apples to apples, with the same loan type and term, APR may be helpful. But lenders don’t always make it easy to tell which loan is an apple and which is a pear. To find the best deal, you need to seek out all the costs attached to the loan.
You may find that a low APR comes with high upfront fees, or that you don’t qualify for a super-low advertised APR, reserved for those with stellar credit.
How Are Interest Rates Calculated?
Calculating the total interest you’ll pay on a home loan is pretty simple with online tools. You can see the total interest you’ll pay on a loan quickly by plugging your loan amount, interest rate, and loan term into a mortgage calculator. (If you want to see what your monthly payment will be when you factor in property taxes and home insurance, use a mortgage calculator with taxes and insurance.)
How APR Works on Home Loans
Not all homebuyers understand the true cost of their mortgage loans. If you’re considering multiple loan offers (perhaps you’ve gone through mortgage prequalification with a few lenders), you can look at the APRs on the offers to compare them against one another.
One caveat regarding APR: Because fees associated with a home mortgage are usually paid at the beginning of the loan, the APR won’t reflect the true annual cost of the loan if you sell the property or refinance before the mortgage term is up.
How Interest Rates Work on Home Loans
Most home mortgages are amortizing loans, so although the monthly payment on a fixed-rate loan remains constant, the amount of interest you’ll pay with each payment will differ. Typically, more of a borrower’s monthly payment is made up of interest early in the life of the loan; as the loan ages, the reverse is true and more of the payment chips away at the principal. An amortization table for your loan should be provided in your loan documents.
Benefits of Government-Backed Mortgages
Some would-be homeowners find themselves comparing different types of mortgages (as well as different interest rates and APRs) when considering how to finance their purchase, and government-backed mortgages will have a different profile than conventional loans.
A government-backed mortgage such as an FHA loan or a VA loan may have a low down payment (or no down payment), which is a key benefit, especially for first-time homebuyers, who typically have fewer resources to pull from. It may also have different upfront fees than a conventional mortgage. An FHA loan, for example, usually requires mortgage insurance. If the borrower makes a down payment of 10% or more, after 11 years the lender can remove the mortgage insurance requirement, but many borrowers need to refinance to get rid of the insurance payment. The cost of this mortgage insurance factors into the APR.
The Takeaway
APR vs. interest rate is a key factor you’ll want to consider when deciding on a loan, because the APR reflects the fees involved in the loan. Even when it comes to government-backed home loans, fees are part of the story. So don’t just look at a loan’s interest rate — take the time to compare the APR as well.
Looking for an affordable option for a home mortgage loan? SoFi can help: We offer low down payments (as little as 3% - 5%*) with our competitive and flexible home mortgage loans. Plus, applying is extra convenient: It's online, with access to one-on-one help.
FAQ
What’s a good APR?
A good APR will depend on your individual profile as a borrower, with your credit score being a key factor. To see how the APR you’re being offered on a home loan compares with the national average, search for “national average XX-year mortgage APR” (with XX being your loan term in years). Then look at the percentages side by side.
What’s a good interest rate?
A good interest rate is one that’s below the posted national average interest rate for your loan type when you search online. Borrowers with less-than-stellar credit scores won’t qualify for the best rates, however, so what’s a good interest rate for you will depend on your personal credit score and financial profile.
Does 0% APR mean no interest?
Zero percent APR means that no interest is charged for a set period of time. This is a term commonly seen on credit card offers and car loans. If you go this route, make sure you note the length of the no-interest promotional period and that you make your payments on time during the period, as missing payments can trigger interest to build on the debt.
Does refinancing your mortgage help lower rates?
Refinancing your mortgage may help lower your interest rate if rates have dropped since you initially purchased your home, or if your credit score and other aspects of your financial profile have improved significantly. It’s important to consider closing costs associated with a refinance, however, before deciding that it makes sense to chase a lower rate.
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¹FHA loans are subject to unique terms and conditions established by FHA and SoFi. Ask your SoFi loan officer for details about eligibility, documentation, and other requirements. FHA loans require an Upfront Mortgage Insurance Premium (UFMIP), which may be financed or paid at closing, in addition to monthly Mortgage Insurance Premiums (MIP). Maximum loan amounts vary by county. The minimum FHA mortgage down payment is 3.5% for those who qualify financially for a primary purchase. SoFi is not affiliated with any government agency.
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