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Your debt-to-income ratio (DTI) is a simple way of calculating how much of your monthly income goes toward debt payments. Lenders use the DTI to determine how much money they can safely loan you toward a home purchase or mortgage refinancing. Everyone knows that their credit score is an important factor in qualifying for a loan. But in reality, the DTI is every bit as important as the credit score.
Lenders usually apply a standard called the “28/36 rule” to your debt-to-income ratio to determine whether you’re loan-worthy. The first number, 28, is the maximum percentage of your gross monthly income that the lender will allow for housing expenses. The total includes payments on the mortgage loan, mortgage insurance, fire insurance, property taxes, and homeowner’s association dues. This is usually called PITI, which stands for principal, interest, taxes, and insurance.
The second number, 36, refers to the maximum percentage of your gross monthly income the lender will allow for housing expenses PLUS recurring debt. When they calculate your recurring debt, they will include credit card payments, child support, car loans, and other obligations that are not short-term.
Let’s say your gross earnings are $4,000 per month. $4,000 times 28% equals $1,120. So that is the maximum PITI, or housing expense, that a typical lender will allow for a conventional mortgage loan. In other words, the 28 figure determines how much house you can afford.
Now, $4,000 times 36% is $1,440. This figure represents the TOTAL debt load that the lender will permit. $1,440 minus $1,120 is $320. So, if your monthly obligations on recurring debt exceed $320, the size of the mortgage you’ll qualify for will decrease proportionally. If you are paying $600 per month on recurring debt, for example, instead of $320, your PITI must be reduced to $840 or less. That translates to a much smaller loan and a lot less house.
Bear in mind that your car payment has to come out of that difference between 28% and 36%, so in our example, the car payment must be included in the $320. It doesn’t take much these days to reach a $300/month car payment, even for a modest vehicle, so that doesn’t leave a whole lot of room for other types of debt.
The moral of the story here is that too much debt can ruin your chances of qualifying for a home mortgage. Remember, the debt-to-income ratio is something that lenders look at separately from your credit history. That’s because your credit score only reflects your payment history. It’s a measurement of how responsibly you’ve managed your use of credit. But your credit score does not take into account your level of income. That’s why the DTI is treated separately as a critical filter on loan applications. So even if you have a PERFECT payment history, but the mortgage you’ve applied for would cause you to exceed the 36% limit, you’ll still be turned down for the loan by reputable lenders.
The 28/36 rule for debt-to-income ratio is a benchmark that has worked well in the mortgage industry for years. Unfortunately, with the recent boom in real estate prices, lenders have been forced to get more “creative” in their lending practices. Whenever you hear the term “creative” in connection with loans or financing, just substitute “riskier” and you’ll have the true picture. Naturally, the extra risk is shifted to the consumer, not the lender.
Mortgages used to be pretty simple to understand: You paid a fixed rate of interest for 30 years, or maybe 15 years. Today, mortgages come in a variety of flavors, such as adjustable-rate, 40-year, interest-only, option-adjustable, or piggyback mortgages, each of which may be structured in a number of ways.
The whole idea behind all these types of mortgages is to shoehorn people into qualifying for loans based on their debt-to-income ratio. “It’s all about the payment,” seems to be the prevailing view in the mortgage industry. That’s fine if your payment is fixed for 30 years. But what happens to your adjustable rate mortgage if interest rates rise? Your monthly payment will go up, and you might quickly exceed the safety limit of the old 28/36 rule.
Those mortgage products are fine as long as interest rates don’t climb too far or too fast, and also as long as real estate prices continue to appreciate at a healthy pace. But make sure you understand the worst-case scenario before taking on one of these complicated loans. The 28/36 rule for debt-to-income has been around so long simply because it works to keep people out of risky loans.
So make sure you understand exactly how far or how fast your loan payment can increase before accepting one of these newer types of mortgages. If your DTI disqualifies you for a conventional 30-year fixed rate mortgage, then you should think twice before squeezing yourself into an adjustable rate mortgage just to keep the payment manageable.
Instead, think in terms of increasing your initial down payment on the property in order to lower the amount you’ll need to finance. It may take you longer to get into your dream home by using this more conservative approach, but that’s certainly better than losing that dream home to foreclosure because increasing monthly payments have driven your debt-to-income ratio sky-high.
Bill Manassero is the founder/top dog at “The Old Dawg’s REI Network,” a blog, newsletter and podcast for seniors and retirees, that teaches the art of real estate investing. His personal real estate investing goal, which will be chronicled at olddawgsreinetwork.com, is to own/control 1,000 units/doors in the next 6 years. Prior to that, Bill and his family lived in Haiti for 11 years as missionaries serving orphaned, abandoned and at risk children.
