"B" tier financing is a type of lending that is typically offered to borrowers who may not qualify for traditional financing due to their credit history or financial situation. In Ontario, "B" tier financing is typically offered by alternative lenders, such as private mortgage lenders or mortgage investment corporations, as a way to help borrowers who may not meet the strict credit and income requirements of a conventional mortgage.

"B" tier financing may be more expensive than traditional financing, as it carries a higher risk for the lender. Borrowers may be required to pay higher interest rates and fees, and they may need to provide collateral to secure the loan.

"B" tier financing may be suitable for borrowers who have a less-than-perfect credit history or who may not have a steady income or a strong financial profile, but it's important for borrowers to carefully consider the terms and conditions of "B" tier financing before committing to it.