How long is the MIP (Mortgage in principle) valid for? 15 March 2022 12:51 Updated A Mortgage in Principle (MIP) from us is valid for 90 days, after 90 days you'll need to reapply for an updated MIP Related articles Can I amend case details after submission? What is the application process? What are Molo's current rates? How long is the mortgage process with Molo? How do I download and install the authenticator app?