Informal early affordability estimate that carries less lender commitment than pre-approval.
Prequalification is an early estimate of what you may be able to borrow based on the information you provide before a full mortgage approval process is complete.
Prequalification helps borrowers test affordability early, compare lenders, and decide whether a purchase plan is realistic before investing too much time in a specific property search. It is useful precisely because it is quick, but that speed also means the result is usually less dependable than a formal pre-approval.
FCAC notes that lenders may divide the pre-approval process into different steps and may call those steps prequalification, preapproval, or preauthorization. That means prequalification is not perfectly standardized across Canada.
In practice, prequalification often sits earlier and lighter than a formal pre-approval. It may rely more heavily on borrower-supplied information and may involve less documentation at the start.
That lighter review is why prequalification can be useful for early budgeting but weak for negotiating confidence. Until income, debts, down payment funds, and property details are reviewed more deeply, the result is still provisional.
A borrower enters income, debt, and down payment details into an initial lender process and receives an estimate of the mortgage amount that may be possible. That estimate can help set a rough budget, but it does not carry the same weight as a deeper pre-approval review or a lender commitment tied to verified documents.
Borrowers sometimes assume prequalification means the lender has already verified everything. Often, that is not the case.
It is also common to assume prequalification and pre-approval are interchangeable in every file. Some lenders use them loosely, but others distinguish them carefully.
Borrowers may also assume a prequalification locks a rate. Sometimes a lender pairs early qualification with rate information, but the label itself does not guarantee a rate hold.
Because lenders use different definitions and workflows, the practical value of a prequalification depends on how much review has actually been done.