There are a lot of factors that determine your credit score, including:
The type of credit you have (whether you have credit cards, loans, etc.)
Credit utilization, which is simply how much credit you use.
Whether you pay your bills on time
The amount you owe on your credit cards.
How much new and recent credit you’ve taken on.
If you have a higher score, you might be able to qualify with a higher debt-to-income ratio, or DTI. DTI refers to the percentage of your monthly gross income that goes toward paying debts. Your DTI is your total monthly debt payments divided by your monthly gross income (your monthly income before taxes). This figure is expressed as a percentage.
To determine your own DTI ratio, divide your debts (student loans, car loan, etc.) by your monthly gross income. For example, if your debts, which include your student loans and car loan, reach $2,000 per month and your income is $8,000 per month, your DTI is 25%.
The lower your DTI, the better off you’ll be. If you do happen to have a higher DTI, you could still qualify for an FHA loan if you have a higher credit score.
The FHA states that your monthly mortgage payment should be no more than 31% of your monthly gross income, and that your DTI should not exceed 43% of monthly gross income in certain circumstances if your loan is being manually underwritten. As noted above, if you have a higher credit score, you may be able to qualify with a higher DTI.