Ask three people how much house you can afford and you will get three answers: what a lender will approve you for, what your budget actually allows, and what the number feels like at 2 a.m. This guide walks through all three, with real Utah math you can follow along with.
The short version: a lender qualifies you on your debt-to-income ratio and will usually approve a bigger payment than you expect, your monthly payment is more than just principal and interest, and the price you should buy is often lower than the price you can qualify for. Here is how it all fits together.
What a lender approves vs. what feels comfortable
Affordability comes down to your debt-to-income ratio (DTI): your total monthly debts, including the new housing payment, divided by your gross monthly income. Conventional underwriting commonly approves a DTI up to about 45%, and an FHA loan can go past 50% with strong credit and cash reserves.
Just because a lender will approve 45% does not mean you should spend it. A widely used comfort target is keeping your total monthly debt at or below about 36% of gross income, which leaves room for everything a mortgage payment does not cover: savings, childcare, travel, and the surprises every homeowner eventually meets.
So there are two prices worth knowing:
- The lender ceiling: the most a lender will approve, around 45% DTI.
- The comfortable number: total debt kept near 36% of income.
Qualifying for a payment and being happy with a payment are two different things. The ratios tell you the ceiling. Your life tells you where to actually land.
What your monthly payment really includes
When people say "the mortgage," they usually mean principal and interest. Your real payment has four parts, often shortened to PITI, plus two more that catch first-time buyers off guard:
- Principal and Interest: paying down the loan plus the cost of borrowing.
- Taxes: Utah property tax runs about 0.55% of a primary residence value per year, one of the lower effective rates in the country thanks to the residential exemption.
- Insurance: homeowners insurance, commonly $100 to $150 per month for a Utah starter home.
- Mortgage insurance: if you put down less than 20%, expect PMI on a conventional loan or MIP on an FHA loan. This adds real money to the payment.
- HOA dues: a lot of newer Utah townhomes and condos along the Wasatch Front carry $150 to $300 a month in HOA fees, and lenders count that against your DTI.
The examples below use an illustrative 6.5% 30-year fixed rate. Your real rate depends on credit, loan type, and the market the day you lock, so check current Utah mortgage rates and get a lender quote before you count on any number here. At 6.5%, every $1,000 you borrow costs about $6.32 a month in principal and interest.
Example 1: a single buyer earning $75,000
Say you earn $75,000 a year, which is $6,250 a month before taxes, you have no other monthly debt payments, and you are using an FHA loan with 3.5% down. Here are your two numbers:
| Scenario | Housing payment | Home price |
|---|---|---|
| Lender ceiling (about 45% DTI) | about $2,812/mo | about $385,000 |
| Comfortable (about 36% DTI) | about $2,250/mo | about $305,000 |
That is an $80,000 spread on the same income, and it is entirely your call how much of it to use. A lender is happy to approve the $385,000 home. Whether the $2,812 payment leaves you room to live is a separate question.
Here is where that comfortable $2,250 payment actually goes, so you can see why the loan itself is smaller than the payment:
- Property taxes (est. at 0.55%): about $140
- Homeowners insurance (est.): about $110
- FHA mortgage insurance (est.): about $135
- Left for principal and interest: about $1,865
Example 2: a dual-income household earning $110,000
Now say two of you earn $110,000 combined, which is $9,167 a month, and you carry $600 a month in car and student loan payments. You are looking at a conventional loan with 5% down.
| Scenario | Housing payment | Home price |
|---|---|---|
| Lender ceiling (about 45% DTI, after the $600 in debts) | about $3,525/mo | about $495,000 |
| Comfortable (about 36% DTI, after the $600 in debts) | about $2,700/mo | about $375,000 |
This is the range most couples are picturing when they think "we make $110,000." A lender will very likely approve you for around $495,000. A comfortable payment points closer to $375,000, and plenty of buyers land somewhere in between.
Notice how much your existing debt matters at the ceiling. That $600 of car and student loan payments is lowering your maximum approval by about $87,000. Paying off the car before you buy could push your approval meaningfully higher.

