What Is Annual Percentage Rate (APR)?

More commonly called APR, Annual Percentage Rate is a government-mandated mortgage comparison tool. It measures the total cost of borrowing over the life of a loan into dollars-and-cents.

A loan's APR is printed in the top-left corner of the Federal Truth-In-Lending Disclosure, as shown above. When quoting an interest rate, loan officers are required by law to disclose a loan's APR, too.

APR is meant to simplify the process of choosing between two or more loans. The theory is that the loan with the lowest APR is the "best deal" for the applicant because the loan's long-term costs are lowest. However, the loan with the lowest APR isn't always best.

APR makes assumptions in its formula that can render it moot.

First, APR assumes you'll pay your mortgage off at term, at never sooner. So, if your loan is a 15-year fixed rate, its APR is based on a full 15 year term. If you sell or refinance prior to Year 15, the math used to make your loan's APR becomes instantly flawed and "wrong".

Example: Let's compare two identical loans in Minnesota -- one with discount points and a lower interest rate; and one without discount points and a higher mortgage rate. The loan with discount points will have a lower APR in most cases. However, if the homeowner sells or refinances within the first few years, the loan with the higher APR would have been the better option, in hindsight.

Second, APR can be "doctored" early in the loan process.

Because the APR formula accounts for third-party costs in a mortgage transaction, and third-party costs aren't always known at the start of a loan, a bank can inadvertently understate them. This would make the APR appear lower than what it really is, and may mislead a consumer.

And, lastly, APR is particurly unhelpful for adjustable-rate loans. Because the APR calculation makes assumptions about how a loan will adjust during its 30-year term, if two lenders use a different set of assumptions, their APRs will differ -- even if the loans are identical in every other way. The lender whose adjustments are most aggressively-low will present the lowest APR.

Summarized, APR is not the metric for comparing mortgages -- it's a metric. For relevant comparison points, talk to your loan officer.

APR Can Be Deceiving

A borrower who is shopping for the best mortgage rate can easily be seduced by low rate offers that are accompanied by low Annual Percentage Rates (APR). Federal Law requires that APR be disclosed along side the actual interest rate…this is in order to help borrowers make a more informed decision on their mortgage. The truth is that APR is a very poor way to comparison shop for a mortgage and can cause borrowers to make costly wrong decisions.

APR was created in order to provide a way for borrowers to account for costs associated with the mortgage. This sounds good because it may not be very easy to choose between a loan with a lower rate and higher fees or a loan at a higher rate and low fees. The problem is that the APR calculation makes some very bad assumptions. First, APR assumes zero inflation and that the value or buying power of a Dollar today will be exactly equal to the value of a Dollar 10, 20 even 30 years from now. Next, the APR calculation assumes that the mortgage will never be prepaid or paid off. That means no refinancing or selling the home…highly unlikely since the average life of a home mortgage loan is less than four years. Just think, about your own clients. Is it not rare to see the same loan in place for even 5-years…forget 30-years. The APR calculation does not consider the value of the money used for fees. So if you spent thousands of dollars in points or fees to get a lower rate, the APR calculation does not give any value to the money if it were not spent on closing costs. Finally, APR does not take tax consequences into consideration. This can be significant since higher fees on the mortgage may not be deductible while the higher interest rate typically is deductible. Moreover, APR can be manipulated, making it totally worthless.

So how does APR work anyway? I like to explain it to my clients by using triangles. I often draw two sets of triangle for my clients to illustrate the difference between Interest Rate and APR. The reason for the triangle is because there are 3 sources of input…"Interest Rate", "Mortgage Amount" and "Monthly Payment". If you know any two of the three, you can calculate the third. See the triangle below.



Since any two of the three variables allows you to calculate the third, a $911 monthly payment for a $150,000 mortgage calculates to an interest rate of 6.125%. But the APR calculation uses different information. The APR calculation only keeps the "Monthly Payment" information the same. Instead of the "Mortgage Amount", APR uses "Amount Financed". This is the "Amount Financed" information on the Truth in Lending statement. Amount Financed takes into consideration the fees that are lender imposed. This includes application fees, points, commitment fees…and interim or per diem interest. So, Amount Financed is the mortgage amount less any lender fees, points and interim interest. The more fees, the lower the Amount Financed. The monthly payment is then calculated as a product of the Amount Financed to give you the "Annual Percentage Rate" or "APR". So the lower the "Amount Financed", the higher the "APR" is. Amount Financed can be manipulated by assuming a closing on the last day instead of the first day of the month. That would increase the Amount Financed and decrease the APR.



Here is a real example on a $150,000 fixed rate 30-year mortgage with zero points: Lender "A" (triangle above) is offering a great low rate of 5.875% and lender "B" (triangle below) is offering a higher rate of 6.125%.



A closer look shows that Lender "A" is charging $3,000 more in fees than Lender "B". How do you compare? If you look at APR, Lender "A" (5.875% with $3,000 higher fees) has an APR of 6.149%. Lender "B" (6.125% but a $3,000 savings in fees) has an APR of 6.211%. So according the APR, Lender A is a better deal even though the fees are $3,000 higher…this is exactly what these high fee lenders are hoping you look at.

Let's look at the real story. The payment difference between the two is $24 per month. So is it worth paying $3,000 in fees to Lender A in order to save $24 per month? Hardly. It will take 10.5 years for a borrower to just to get back their investment! A bad choice when you consider that mortgage loans typically are retired within four years. To make the decision to go with Lender "A" even worse, if that's possible, borrowers rarely take the value of today's dollars into account. Rather than giving Lender "A" the windfall of your hard earned $3,000, you should give it to yourself. Reduce the loan balance on your mortgage by the fees you are saving. In the example above that would reduce the loan from $150,000 to $147,000. This makes the payment difference just $6 per month instead of $24 per month! The true time to break even is really 500 months (more than 40-years!). So it is impossible to benefit from the higher fee program from Lender "A" because the maximum period on the loan is 30 years or 360 months. One more thing…when you calculate your tax deduction on the payment difference, it makes even more sense to avoid paying higher non deductible fees. The obvious correct choice is to go with Lender "B" even though the APR is lower with Lender "A".