Professional lawyers should know their debt-to-income (DTI) ratio when refinancing their home loan. DTI is a measure of a borrower’s monthly debt payments to their gross monthly income. Lenders use this ratio to evaluate a borrower’s ability to repay a loan. A high DTI can result in higher interest rates, stricter loan requirements, or loan denial. Professional lawyers can calculate their DTI by adding up their monthly debt payments, including mortgage payments, and dividing it by their monthly gross income. A DTI below 36% is generally preferred by lenders. If their DTI is too high, they can pay off debt or increase their income to improve their DTI ratio.