What DTI do you need for a conventional loan?

Conventional loans can be approved with a back-end DTI up to 50% when the automated underwriting system approves the full file, though below 45% is more comfortable and below 36% is considered strong. Your credit score, down payment, and cash reserves all affect how much DTI flexibility you get.

Does my current rent count toward my DTI?

No. The rent you pay today is not part of your DTI when you buy a home, because you will stop paying it. Your DTI uses the proposed payment on the new home, which includes principal, interest, property taxes, homeowners insurance, mortgage insurance if any, and HOA dues, plus your monthly debt payments from your credit report.

Do utilities, groceries, and car insurance count in DTI?

No. DTI only counts the new housing payment plus debts that appear on your credit report or are court ordered: car loans, credit card minimum payments, student loans, personal loans, and child support or alimony. Utilities, groceries, streaming subscriptions, gas, cell phone bills, and insurance premiums are not included.

How can I lower my DTI quickly before applying for a mortgage?

The fastest wins are usually paying off a small loan or credit card entirely to remove its monthly payment, paying a car loan down to under 10 remaining payments in some programs, and not financing anything new before closing. On the income side, a co-borrower's income or documented bonus and overtime history can raise the denominator. A licensed loan officer can tell you which move improves your specific file the most.

Homebuyer Education Friday, August 7, 2026 5 min read

What DTI Do You Need to Buy a Home? The First Number Lenders Check

This morning's jobs report has rates doing their usual data-day dance, and I'll break down where they landed in Monday's post. Today I want to cover something you can calculate right now, before you ever talk to a lender: your debt-to-income ratio, or DTI. It is the first number I check on every file, it kills more preapprovals than credit scores do, and most people have no idea what theirs is. We just added a free DTI checker to the site that runs the math with today's actual rate, so this is a good week to learn how the number works.

DTI at a glance (back-end)

36% strong · 45% solid · 50% workable

General guide for well-documented files. Program rules and automated underwriting findings control the final answer.

What DTI actually is

DTI compares your monthly debt payments to your gross monthly income, before taxes. Lenders look at it two ways. Front-end DTI is just the new housing payment divided by income: principal, interest, property taxes, homeowners insurance, mortgage insurance if you have it, and HOA dues. Back-end DTI adds your other monthly debts on top: car payments, credit card minimums, student loans, personal loans, and any child support or alimony. When a lender talks about "your DTI," they almost always mean the back-end number.

Notice what is not on that list: utilities, groceries, gas, cell phone, streaming, car insurance, daycare. None of it counts. And the rent you pay today doesn't count either, because you'll stop paying it when you buy. That is why plenty of people who feel broke on paper qualify more easily than they expect, and why some high earners with three financed cars get a harder look than they expect.

A real example

Say you earn $8,500 a month gross and you're looking at a $400,000 loan at our posted 30-year rate of 6.375%, which you can always see on the live rates page. Principal and interest is about $2,495. Add roughly $600 for taxes, insurance, and HOA and your housing payment is about $3,095. Front-end DTI: about 36%.

Now add a $450 car payment, $150 in credit card minimums, and a $200 student loan payment. Total monthly obligations: about $3,895. Back-end DTI: about 46%. That number surprises people, it feels high. But here's the part most articles get wrong: at 46% this buyer is still inside the box for a lot of loan programs. The internet loves to repeat "43% is the limit," and it simply isn't how modern underwriting works.

The real limits by program

Conventional loans can be approved up to 50% back-end DTI when the automated underwriting system likes the whole file. Credit score, reserves, and down payment matter: a 760 score with money in the bank gets more DTI rope than a 640 score stretching for the down payment. FHA loans are often the most forgiving on DTI, routinely approving files in the low 50s with compensating factors like reserves or minimal payment shock. VA loans technically use a 41% guideline, but VA underwriting really turns on residual income, the dollars left over each month, so I regularly close VA loans well above 41% for veterans with solid residual income. Every one of these is a case-by-case call, which is exactly why a two-minute conversation beats a rule of thumb.

Want to know your real DTI?

Try the free DTI checker, or get an answer from me in 60 seconds. No credit pull.

Get My Numbers →

How to lower your DTI, fastest moves first

If your number comes back higher than you'd like, you have more levers than you think. Paying off a small loan or a credit card entirely removes its whole minimum payment from the math, often the biggest bang for the buck. In many programs a car lease or loan with fewer than 10 payments left can be excluded. Do not finance furniture, a car, or anything else between now and closing, new payments go straight into the ratio. On the income side, documented bonus, overtime, and commission history can count, and a co-borrower changes the denominator completely. Sometimes the right answer is simply a different loan structure: a longer term, a seller-paid buydown, or buying the rate down with points all shrink the payment side of the fraction.

Check yours in about 30 seconds

Two new tools on the site do this math for you. The Quick DTI Check on the rates page pulls today's actual 30-year rate automatically, you enter a loan amount, your income, and your monthly debts, and it shows your front-end and back-end DTI instantly. The full mortgage calculator on the homepage goes deeper: down payment or loan amount, property taxes by state, insurance, HOA dues, and it even estimates PMI automatically when your down payment is under 20%, so the DTI it shows is the honest one. Neither tool asks for your contact info and neither touches your credit.

DTI is a snapshot, not a verdict. I've helped buyers at 52% restructure into an approval, and I've told buyers at 38% to pump the brakes for other reasons. If your number lands in the yellow zone, reach out and let's look at the whole picture together. For rate updates in your inbox, the free rate alert list is always open, and Monday I'll be back with the market recap. My number is at the top of the page, and I answer it personally.

Travis Saling

Licensed Loan Officer · NMLS 299683 · 15+ years

I'm a licensed mortgage loan officer serving California, Oregon, Washington, Nevada, Arizona, Colorado, Idaho, Florida, Texas, and Tennessee. I write this blog myself, no ghostwriters, no AI fluff. If you have a question about your specific situation, reach out.

Disclaimer: This blog post is for informational purposes only and does not constitute a commitment to lend, a guarantee of any specific rate, term, or approval, or financial advice. All loans are subject to credit approval, satisfactory appraisal, and clear title. DTI guidelines vary by program, lender, and automated underwriting findings; the ranges described here are general guidance, not a promise of approval at any specific ratio. Payment examples are estimates. Rates change frequently. Take The Rate · NMLS #299683 · Equal Housing Lender.