How the figure is worked out
The calculator uses the standard amortising loan formula, the same one every South African bank works to. The bond amount is the purchase price less your deposit. The instalment is the fixed monthly payment that clears that amount over the term at the rate you have entered.
The income figure is a rule of thumb rather than a rule. Banks generally want the instalment to sit at or under about thirty per cent of gross monthly income, and they look at what else you are repaying before they decide. Two people earning the same amount can get very different answers.
Things it deliberately does not do
- It does not include insurance, rates or levies. Those are real monthly costs and they are listed on every property page on this site, so you can add them yourself.
- It does not assume a rate. Prime moves. Use the rate your bank has quoted you, and try it a percentage point higher to see what happens if it moves against you.
- It is not advice. We sell houses; we are not financial advisers and this page is not a recommendation about what you can afford.
Get pre-approved before you go looking
A seller takes an offer from a pre-approved buyer more seriously, and you stop wasting Saturdays on houses that were never going to work. Any branch will point you at a bond originator who does this for nothing.