What share of income should go toward a mortgage?
For planning, a payment around 30% of income is often easier to sustain. Lenders will also review debts, credit history, and their own policies.
Is the result the amount a bank will approve?
No. It is an estimate for comparing scenarios. Actual approval depends on verified income, credit history, age, the property, and each lender's criteria.
Should all savings be used as the down payment?
It is usually better to keep a reserve for closing costs and emergencies. CIRSA's down payment and closing cost calculator can help you estimate those items.