Your debt-to-income ratio, or DTI, is the share of your gross monthly income that goes toward monthly debt payments, including your future house payment. Lenders use it to judge whether a new mortgage fits comfortably alongside the bills you already have. For Florida buyers, DTI deserves extra attention because homeowners insurance, flood insurance and HOA dues are counted in the housing payment, and they can push the ratio higher than many people expect.
How DTI is calculated
The math is straightforward. Add up your monthly debt payments, divide by your gross monthly income (before taxes), and multiply by 100 to get a percentage.
Lenders usually look at two versions:
- Housing ratio, sometimes called the front-end ratio: just your projected housing payment divided by gross income.
- Total ratio, or back-end ratio: your housing payment plus all other monthly debts divided by gross income. This is the number most people mean when they say DTI.
Here is a simple illustration using round, made-up numbers. Suppose a household earns $7,000 a month before taxes. Their projected housing payment, including taxes, insurance and HOA dues, is $2,100. They also have a $400 car payment and $100 in minimum credit card payments. Their total monthly debts are $2,600. Dividing $2,600 by $7,000 gives a total DTI of about 37 percent, and a housing ratio of 30 percent.
Maximum DTI limits depend on the loan program, your credit, your savings and other factors. Requirements vary, and a lender will review your full file rather than relying on one number.
What counts and what does not
| Usually counted | Usually not counted |
|---|---|
| Projected mortgage principal and interest | Utilities such as electric, water and internet |
| Property taxes and homeowners insurance | Cell phone and streaming subscriptions |
| Flood insurance, if required | Groceries, gas and auto insurance |
| HOA or condo dues | Health insurance premiums paid outside payroll |
| Car loans and leases | Childcare costs (though some lenders ask about them) |
| Minimum credit card payments | |
| Student loans, even if deferred, under many program rules | |
| Child support or alimony you pay | |
| Personal loans and other installment debt |
Just because something is not counted does not mean it does not matter. Your own budget should include every real expense, even the ones a lender leaves out.
Why Florida costs can move your DTI
Two homes with the same price can produce very different ratios in Florida. A few reasons:
- Insurance premiums. Homeowners insurance varies widely based on roof age, construction, wind mitigation features and location. An older home closer to the coast may carry a noticeably higher premium.
- Flood insurance. If the property is in a special flood hazard area, flood coverage is usually required for federally backed loans, and that premium is added to your housing payment.
- HOA and condo dues. Coastal condos and many planned communities have dues, and recent Florida condo reserve rules have led some associations to raise them.
- Property taxes. Florida taxes are based on assessed value, and your estimate should use your purchase price. The homestead exemption can lower taxes on a primary residence after you apply, but it may not be reflected in your first-year estimate.
Our post on how insurance costs affect mortgage approval in coastal Florida goes deeper on this. To see how each piece changes your payment, try the mortgage calculator.
Ways to improve your DTI before you apply
You can lower your ratio by reducing debts, increasing qualifying income, or adjusting the home you buy. Practical options include:
- Paying down credit card balances, which can lower the minimum payments lenders count
- Paying off a small installment loan that has only a few payments left, if your loan officer agrees it helps
- Avoiding new car loans or financed purchases before and during the mortgage process
- Adding a co-borrower with stable income, if that fits your situation
- Documenting all eligible income, such as overtime, bonuses or part-time work with enough history
- Looking at homes with lower insurance costs, lower HOA dues or a larger down payment
Talk with your loan officer before paying anything off. Sometimes moving cash to pay a debt reduces the savings you need for closing, and the trade-off is not worth it.
DTI for self-employed and commission borrowers
If your income varies, the lender usually averages it over a period of time, often using tax returns. For self-employed borrowers, business write-offs that lower taxable income also lower qualifying income, which can raise your DTI. Planning ahead with your tax preparer and loan officer helps. Our guide on how self-employed Florida borrowers can prepare has more detail.
Frequently asked questions
Is DTI the same as my credit score?
No. Your credit score reflects how you have handled credit, while DTI measures how much of your income goes to debt. Lenders look at both, along with savings, employment and the property.
Does a deferred student loan count in my DTI?
Often, yes. Many loan programs require lenders to count a monthly amount for student loans even if payments are deferred or in an income-driven plan. The exact calculation depends on the program.
Will paying off a credit card right before applying help?
It can lower your DTI and may help your credit score, but timing matters because the lender needs to see the updated balance. Ask your loan officer before moving money so your closing funds stay on track.
If you would like to see where your DTI stands before you shop for a home in Flagler, Volusia or anywhere in Florida, Michael Akialis is glad to run the numbers with you. Read Michael’s background, visit our Flagler Beach mortgage loan originator home page, or call (386) 793-5435.
Mortgage information is for educational purposes only and is not a commitment to lend or extend credit. All loans are subject to credit approval, property approval, underwriting guidelines, program eligibility, and availability. Program rules, rates, fees, and requirements can change. Michael Akialis, NMLS #832250; American Home Mortgage Group LLC, NMLS #1812447.