Criteria guide

Income boosters

Visit the income booster page on our website for more information about the income booster proposition.

We will factor income boosters' disposable income into our affordability calculations to increase the amount we can lend. Please note that we apply additional tests to make sure the owners are not excessively reliant on the boosters.

For the most accurate affordability figure please use our affordability calculator.

To preserve a first-time buyer’s stamp duty status, an income booster is not on the property deeds, but they are on the mortgage. This is structured like a Joint Borrower Sole Proprietor (JBSP) mortgage.

Income boosters are subject to the same credit checks, eligibility criteria, and evidence requirements as the owners, as detailed elsewhere in this guide. However our ejector seat feature can be used to extend the term by removing boosters part way through the term so they do not exceed our maximum age criteria.

Only close relatives can act as income boosters. A “close relative” is defined as parents (including step-parents), children (including step-children), grandparents, siblings (including half-siblings and step-siblings), uncles and aunts (siblings of parents only).

Income boosters may choose to contribute regularly to the mortgage repayments or simply be on standby. If they do contribute they can build up a stake in the property using our dynamic ownership feature.

Applicants' interests are protected through the home agreement, our version of a deed of trust. It provides robust legal protection to each individual borrower throughout the term of their mortgage.

Income boosters must take independent legal advice (ILA) at their own cost before signing the home agreement.

Income boosters are not allowed to reside in the property.

Note that all applicants, including income boosters, are liable for the full mortgage repayment.