As explained above, your actual mortgage-to-salary ratio determines your credit score, income type and lender. If your credit score surpasses 679 and your income can be substantiated with employment letters, pay stubs, and required tax documents, your mortgage-to-salary ratio will be 39/44. Should your credit score range between 600 and 679, and if your income can be verified using employment letters, pay stubs, and necessary tax documents, your mortgage-to-salary ratio would be 35/42. However, suppose your credit score falls below 600, or your income is derived from unverifiable sources that can't be confirmed with standard documents like employment letters, pay stubs, or income tax reports. In that case, your mortgage-to-salary ratio will be 45/50. Note: It may seem counterintuitive that you could qualify for a larger mortgage with a lower credit score. However, the key differences lie in the mandatory down payment, terms of the mortgage, and interest rates. Mortgages granted to individuals with good credit scores generally offer the most favourable terms and conditions and the lowest interest rates in the market compared to those with lower credit scores.