Mortgage purchase is not recommended. Overdue for 40 times will have a serious negative impact on credit records, which will make financial institutions such as banks worry about your credit evaluation. When applying for a mortgage loan, banks usually review the borrower's credit history and credit information, including overdue records. The more overdue times, the lower the credit rating, which may lead to the rejection of loan applications or the increase of interest rates. In addition, even if the loan is approved successfully, additional collateral or guarantee is needed, and a higher down payment ratio may be required. Therefore, in the case of a large number of overdue records, the difficulty of mortgage purchase will increase.

Extended data:

-overdue record: overdue record refers to the situation that the borrower fails to repay the loan or credit card bill at the agreed time. The more overdue times, the greater the credit risk of the bank to the borrower.

-Credit records: Credit records are personal credit information databases managed by the Credit Information Center of the People's Bank of China and its branches. Banks and other financial institutions can evaluate the credit status of borrowers by checking their credit records.

-Loan interest rate: The loan interest rate is the fee charged by banks or financial institutions when providing loans to borrowers, and borrowers with high credit risk may face higher loan interest rates.

-Down payment ratio: the ratio of down payment to total house price in mortgage to buy a house. Borrowers with higher credit risk may need to pay a higher down payment ratio.