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Think back to the last time you financed a purchase — be it a home, automobile, or what have you… You may remember having heard the term “debt-to-income ratio.” Today I want to spend some time going over exactly what this ratio is, and to also touch on how it can effect your personal finances.
What is your debt-to-income ratio?
Commonly referred to as your “DTI,” your debt-to-income ratio is a personal finance benchmark that relates your monthly debt payments to your monthly gross income.
As an example… Let’s say that your gross monthly salary is $5,000 and you are spending $2,800 of it toward monthly debt payments. In that case, your DTI would be an unhealthy 56%.
This version of your DTI is sometimes referred to as your “back-end” DTI. This is often broken down further to give a front-end debt-to-income ratio, which is a component of your back-end DTI.
How to calculate your front-end DTI
Your front-end DTI is calculated by dividing your monthly housing costs by your monthly gross income. Front-end DTI for renters is simply the amount paid in rent, whereas for homeowners it is the sum of mortgage principal, interest, property taxes, and home insurance (i.e., your PITI) divided by gross monthly income.
From above, if that $2,800 in debt payments is attributable to $1,500 in housing costs and $1,300 in non-housing costs, then your front-end DTI is $1,500/$5,000 = 30% (and your back-end ratio is still 56%, as calculated above).
How lenders use your DTI
Mortgage lenders typically use DTI (along with other variables) to determine whether or not you qualify for a loan, and to help determine your mortgage rate. A high front-end DTI raises red flags with lenders because it is commonly associated with borrower default. In fact, reducing front-end DTI to reduce the risk of homeowner default was one of the main objectives of the loan modification programs introduced by the government in 2009.
There are specific limits for DTI that are used as cut-off points when evaluating borrowers. Current DTI limits for conventional conforming mortgage loans are typically 28% on the front end and 36% on the back end, though these limits are slightly higher for government subsidized FHA loans.
While there are certainly other factors to consider when determining our eligibility for financing (e.g., credit score, etc.), your DTI is an important determinant that you should be aware of. By working to improve it, you can make yourself a better credit risk, and thus get more favorable treatment from lenders.
What is your DTI?
I just figured our current household DTI. Our front-end ratio is 15%, and our back-end ratio is 24%. What is yours?
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