What it means

Divide the cash deposit needed or paid for a home by the buyer's or buyers' annual income. The result can be shown as a number of years of income or as a percentage. It indicates the size of the upfront saving hurdle, not how long saving will actually take: nobody can usually save all their income. This is different from the deposit as a percentage of the house price, which helps determine the loan to value ratio.

Example

A £40,000 deposit is equal to one year's income for a buyer earning £40,000 a year: the deposit to income ratio is 1, or 100%. If they save £4,000 a year and start from zero, it would take ten years to save that amount, ignoring interest and price changes.

Why it matters

A buyer may have enough income to make monthly mortgage payments but still struggle to save the cash needed before they can buy.

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