The 28/36 rule
Lenders like housing costs (principal, interest, taxes, insurance) at no more than 28% of gross monthly income, and all debts at no more than 36%. Many loans allow up to 43β50% DTI, but lower is safer.
FAQ
How much house can I afford on $110,000?
With $500 of other debt, $60,000 down and a 6.3% rate, about $385,000.
Sources (checked Nov 6, 2026): Fannie Mae and FHA underwriting guidelines; CFPB.