What is a lender's maximum DTI?

Each lender has their own DTI ratio (Debt to Income) calculation that they will consider stable for a home loan applicant to have, it is essentially a stress test to make sure the applicant can make comfortable repayments.

Majority of lenders max DTI would be 6, if it goes over this the lender may consider it to risky to lend to the applicant as they may not be able to afford the ongoing repayments. Although some lenders will go higher and cap at 7 or 8, but these will need to be manually approved by their credit departments.