The mortgage loan commitment is not a legal obligation by the lender to lend the mortgage.
It’s just a signal from the lender to everyone coming to the transaction that the transaction is going well and they can proceed to the final stage of the lending process as planned.
This is to keep sellers who have taken their homes off the market in hopes of closing that transaction. This commitment also helps the real estate agents to close the transaction smoothly.
This commitment by the lender is provided in form of a letter. A mortgage commitment letter is a document that confirms that your lender will approve a specified loan amount as long as you comply with the documents you provided in your mortgage application.
Receiving the mortgage commitment letter means that the lender has finished reviewing your application including your credit score, your assets, and all required qualification to initiate the underwriting process.
This letter is proof that you have received pre-approval from the lender and comply with all required parameters to close the transaction.