Mortgage solution
The rate stays put for the whole term, and so does the payment. What remains to check is what it costs to get out early.

The rate is set for the entire term (one, two, three or five years, most often) and the payment is identical from the first instalment to the last. The market can do what it wants. Your contract doesn’t move. Pick this structure when the budget has to be predictable, or when a higher payment would be hard to absorb.
Break a fixed rate before maturity and you pay the greater of two amounts: three months’ interest, or the interest rate differential (IRD), which is the gap between your rate and the rate the lender could place the money at today, applied to the balance and the time remaining. If rates have dropped since you signed, the IRD can reach several thousand dollars. It isn’t calculated the same way everywhere, either. Several large banks base it on their posted rate, which pads the bill compared with a lender that uses its actual rate.
A five-year fixed protects you from the market, but it ties you down for five years. If you might sell, move or refinance before maturity, the penalty belongs in the math from day one. Portability (moving the mortgage to another property) and prepayment privileges, often 10 to 20% of the balance a year, determine how much room you keep despite the locked rate.
At the same rate, two offers can be thousands apart on the penalty alone. Before signing, check the IRD method, the percentage you can prepay each year at no charge, whether you can raise the payment, and what happens if you move the mortgage. Current market rates are on the mortgage rates page.
Documents to gather
Not at all. Two offers at the same rate can differ by thousands if you have to break the term. The penalty method, the prepayment allowed and portability count as much as the rate.
Not without breaking the contract, and the penalty comes with it. Going the other way, from variable to fixed, is usually allowed without penalty with the same lender.
Pick the situation closest to yours.
Contact
Buying, renewing, refinancing, or something a bit out of the ordinary: tell us where you’re at, even if it’s still fuzzy. Mathieu gets back to you with next steps and the documents to pull together.