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Mortgage APR vs. Interest Rate: What’s the Difference?

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As a prospective homebuyer, you may be wondering about the meaning of an APR vs. interest rate. An APR (annual percentage rate) represents the true cost of borrowing a mortgage, including the interest rate, lender fees and required third-party costs. The interest rate, on the other hand, represents only what you’ll pay as a direct fee for taking out a loan. But which is the better measure of the value a loan offers you? Keep reading to find out.

What is an annual percentage rate?

A mortgage annual percentage rate (APR) is a number that captures the total (“true”) cost of borrowing money to buy a home. It represents the interest rate a lender will charge you annually, plus other lender fees and closing costs. APRs are expressed as a percentage and calculated based on the total loan balance.

Unlike what you may be used to with credit cards, a given mortgage loan’s APR and interest rate won’t usually be that close to each other — you should expect the interest rate to be lower than the APR because it’s only capturing the amount you’ll pay to borrow money. An APR, on the other hand, typically accounts for several costs and fees, including:

  • Mortgage interest rate
  • Mortgage points
  • Loan origination fees
  • Mortgage insurance premiums
  • Underwriting fees
  • Other closing costs

As a result of combining all of these costs and fees into one number, APRs make it easier for consumers to compare loans — even if those loans have different rates and fees. The Truth in Lending Act requires lenders to provide a loan estimate within three days of receiving a mortgage application; APR information can be found on Page 3 of this document.

Understanding APR vs. interest rate

As you shop for loans, it may be easiest to compare mortgage offers by referencing their advertised interest rates. Like APRs, interest rates are expressed as a percentage of the total loan balance. But don’t make the mistake of stopping there: Loans that appear similar on the surface — sharing identical interest rates and similar monthly payments — should be compared by APR to ensure you’re clear on the true costs you’ll face over the life of each loan.

Consider the following example that compares two different 30-year, fixed-rate $320,000 mortgages. The home’s purchase price is $400,000 for both loans, meaning the borrower made a 20% down payment, and they both carry a 5.61% interest rate.

Along with origination fees, both loans have mortgage points — an upfront charge a borrower pays to get a lower mortgage rate. One point is equal to 1% of the loan amount, so each point in the example above costs $3,200.

At first glance, Loan A appears to be a better deal since it costs $1,600 less in points and fees than loan B. In addition, the monthly mortgage payment (based on the adjusted loan balance) is about $9 lower than Loan B. However, to truly understand the cost of each loan, we’ll need to calculate each loan’s annual percentage rate and compare.

How to calculate the APR on a loan

There are two ways to calculate APR: the actuarial method and the U.S. rule method. Both are acceptable according to federal regulations and, for most people’s purposes, the differences between the methods are negligible — both methods will return the same results (except in cases where payments aren’t made on schedule).

You’ll need to use a mortgage APR calculator to determine your rate, because the calculations involve several complex variables that a basic calculator can’t handle. Here are the APRs calculated for our above example loans:

Loan ALoan B
APR5.79%5.84%

We used an online mortgage APR calculator to input the loan costs and fees. As you can see, the APR on Loan A is lower, making it indeed the better deal.

Takeaway: If you’re comparing two mortgages that have the same interest rate and appear to be similar, review the APRs to better understand the true cost of each mortgage.

How to calculate a mortgage interest rate

Interest rates are complex and determined both by factors you can and can’t control. So, although it may be helpful to understand how mortgage rates work at a high level, the most practical thing to do is focus your efforts on what you can control. Here are a few ways you can make sure you get the best interest rate possible in your situation:

Improve your creditMore than any other factor, your credit score affects how much lenders will charge you to borrow money. Put yourself in a more favorable position with lenders by making on-time payments for your existing accounts, paying down your outstanding debt balances and removing any errors you may find on your credit reports.
Consider where you want to buy Location, location, location — it’s not just true for real estate, but also for credit. Many lenders charge a different amount to borrowers in one state versus another, or even one county versus another. You can use the Consumer Financial Protection Bureau’s Explore Interest Rates tool to compare rates by location.
Choose your loan amount wiselyLenders are likely to charge a higher interest rate for small mortgage loans (considered to be loans below $100,000) or jumbo loans (in 2022, any loan over $647,200 and not in a high-cost county as designated by the Federal Housing Finance Agency).
Make a bigger down paymentA simple rule of thumb is that the bigger your down payment, the lower your interest rate will be.

Things You Should Know

You may notice that, in some cases, you can find loan offers at lower interest rates when you put just under 20% down, compared to a scenario in which you put down 20% or more. This is likely because you’ll be required to pay for private mortgage insurance (PMI), which gives your lender additional protection should you default on the loan. Add the cost of PMI into the calculations, and you may not get a better deal overall even though you’re being offered a lower interest rate.

Avoid lender creditsIf you purchase lender credits, the lender will typically lower your closing costs, but there’s a catch — you’ll have to agree to a higher interest rate.

Watch out for APRs on ARMs

So far we’ve only been working with fixed-rate loans in our examples. But APR calculations become more complicated — and more limited in their utility — when dealing with adjustable-rate mortgages (ARMs). With ARMs, interest rates will vary over the life of the loan, and at the beginning, they typically have lower interest rates than 30-year fixed-rate mortgages.

How ARM interest rates work

ARMs are structured so the lower APR is only fixed for an initial period, usually between one month and 10 years — and once it’s over, the loan will “adjust” according to a benchmark interest rate known as an index. The lender will then also add a margin — a set amount of percentage points — to the index in order to calculate your interest rate. The timetable associated with an ARM’s fixed and adjustable periods will be right in its name: in the case of a 5/1 ARM, for example, the rate is fixed for the first five years of the loan and then adjusts annually thereafter.

Calculating the APR on an ARM is a bit like trying to hit a moving target, as it’s very improbable that in five years, when the interest rate on a 5/1 ARM begins to adjust, the index rate will be at the exact same level it was on the day you closed. It’s also practically impossible that the index rate will stay the same for the remainder of the loan term, when the rate adjusts annually.

If you really want to compare ARM rates using APR, you can do so — but you’ll need to understand that the APR won’t reflect the maximum interest rate the loan could reach. To compare ARMs, it’s also important to ensure you’re comparing APRs for loans with the same rate type and repayment term: 30-year fixed to 30-year fixed, 5/1 ARM to 5/1 ARM and so on.

4 tips to remember when loan shopping

Shopping around for a mortgage will help you get the best deal. In fact, nearly half of borrowers who compare multiple loan options will save money on their mortgage, according to a recent LendingTree survey. The lesson here is that, although it may be tempting to settle on one mortgage lender before combing through competitors’ loan offers, taking the time to comparison shop can potentially save you thousands in interest over the life of your loan.

Keep the following tips front of mind as you compare offers and prepare to get a mortgage:

1. Focus on APR vs. interest rate based on your needsIt makes sense to focus on APRs if you care most about getting the best deal on your monthly payments. On the other hand, if you’re more concerned about saving money in the long haul, it’s logical to give more weight to interest rates.
2. Ask about additional fees Although APRs can be a powerful tool as you compare loan offers, they aren’t foolproof. Lenders are required to include certain costs in their APR calculations, but there are additional fees — for example appraisal or inspection fees — that may not be represented in the APR.

Tip. Be careful when comparing mortgage loans to other loan types, like HELOCs, whose APRs don’t include fees.

3. Negotiate costs and fees You’ll pay several closing costs when taking out a mortgage — these include underwriting fees, title fees and other third-party charges. When you receive your loan estimates, review these costs and negotiate where you can.
4. If purchasing discount points, calculate a “break-even point” When you pay for mortgage points, you’re essentially paying some interest upfront to receive a lower interest rate in return. But if you don’t stay in the home for a long enough period, you won’t actually recoup what you spent on points.

To calculate a break-even point, divide the amount you paid in points by the amount you stand to save each month due to the lower rate. The result will be the number of months you need to remain in the home in order to break even.

Frequently asked questions

You can find your interest rate on Page 1 of your loan estimate.

Mortgage rates are constantly in flux, which means the only way to define a “good” interest rate is to compare it to the average interest rate at the time you’re interested in buying. As of July 2022, the average 30-year mortgage rate is 5.30%, according to Freddie Mac’s Primary Mortgage Market Survey.

Origination fees are upfront charges a lender requires you to pay in exchange for funding your mortgage. They may refer to a variety of different fees added together, such as underwriting and processing fees and other administrative costs. Origination fees are listed on Page 2 of your loan estimate.

Mortgage points (also called discount points) are fees paid directly to a mortgage lender in exchange for a reduced interest rate. This may also be referred to as “buying down the rate.” Paying points also lowers your monthly mortgage payment. One point is equal to 1% of your loan amount.

mortgage rate lock is a commitment between a mortgage lender and borrower that allows the borrower to secure a specific interest rate on their loan for a predetermined period. The interest rate won’t fluctuate during that time frame, provided there are no changes to the borrower’s financial profile.

Mortgage insurance is a policy that protects your lender in case you fail to repay your mortgage, a situation known as being in default. If this happens, your lender will foreclose on the property and try to sell your house to recover the money they invested. Mortgage insurance helps make up the difference if your home sells for less than the outstanding mortgage balance.

 

Today's Mortgage Rates

  • 5.88%
  • 5.87%
  • 6.30%
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