The interest rate is only one part of the cost of buying a home. The purchase price, deposit and length of the loan determine how far a household’s budget will stretch.

Mortgage headlines often focus on a single percentage. A buyer’s monthly payment depends on more than that rate: the amount borrowed and the time over which it will be repaid are equally fundamental.

A decline in interest rates does not necessarily make the same home more affordable. If purchase prices rise, the household may need a larger deposit or a larger loan. Those changes can offset part of the gain from cheaper borrowing.

Fixing a rate does not fix every cost

A fixed-rate period provides certainty about interest for a specified time. It does not remove maintenance, energy bills or the costs associated with owning the property. Nor does it determine what terms will be available when the fixed period ends.

Longer repayment periods can reduce the regular payment while extending the time over which interest is charged. The smaller monthly figure is therefore not the same thing as a cheaper loan overall.

Comparing the whole picture

For reporting on housing affordability, wages, property prices and lending conditions belong in the same frame. A national average can also conceal large differences between cities and regions. The question is not only whether credit is cheaper, but whether the homes people need are within reach.