Your credit score and debt-to-income ratio can impact the rate and payment for PMI when buying a home.
Credit score: Your credit score is a measure of your creditworthiness used to determine the risk of lending money to you. The higher your credit score, the lower the risk you pose to the lender, which can result in a lower PMI rate. On the other hand, a lower credit score may indicate a higher risk, resulting in a higher PMI rate.
Debt-to-income ratio (DTI): Your debt-to-income  ratio measures how much of your monthly income goes towards paying off debt. A high DTI can indicate that you may have trouble making your mortgage payments, resulting in a higher PMI rate. A low DTI, on the other hand, means you have more disposable income for your mortgage, which can result in a lower PMI rate.