A Canadian mortgage underwriter works for the lender, not for you and not for your client. Their job is to decide whether the lender will be repaid, on time, for the full term — and to price that risk. Everything else in this course follows from that single sentence.
Brokers sometimes describe underwriting as a hurdle. It is more useful to think of it as a question being asked on the lender's behalf: if this borrower stops paying, what happens? Every document you collect, every ratio you calculate and every note you write is evidence toward that question.
The same file can be approved at one lender, approved with conditions at another and declined at a third — without any of them being wrong. They are pricing different risk appetites and funding their mortgages differently.
Broadly, Canadian residential lending falls into three tiers. Knowing which tier a file belongs in, early, is the single biggest time-saver in this job.
A handful of terms recur constantly. You do not need to master them yet — each gets its own module — but you should recognise them.
Insured, insurable and uninsurable describe whether default insurance applies and who pays for it. That category is set before anything else and it drives the rate. GDS and TDS are the two debt-service ratios that decide how much a borrower can carry. The minimum qualifying rate, commonly called the stress test, is the rate a borrower must be able to afford on paper even though they pay a lower contract rate.
Standard and collateral charges describe how the mortgage is registered on title, which quietly determines how easily your client can move lenders later. That one matters more than most new agents expect.
Lenders receive incomplete, badly ordered files all day. The broker who consistently gets approvals is rarely the one with a secret lender contact — it is the one whose files arrive complete, correctly calculated and honestly framed.
That is what the rest of this course teaches: how to read the file the way the underwriter will, so that by the time you submit, there is nothing left to discover.
A borrower is declined by an A lender and approved by a B lender the same week. What does this most likely tell you?
Different tiers price different risk. An A lender declining a file is a statement about that lender's guidelines, not a verdict on the borrower. The B approval will typically carry a higher rate and a lender fee — the cost of the wider guideline. Neither decision is an error, and assuming one was is how brokers waste weeks re-submitting to lenders in the same tier.
