“A further 50 basis point rate cut, as money markets now imply, would require [SMSFs] to buy almost $30 billion worth of Aussie equities, [representing] two per cent of market cap, to maintain income levels.”

Credit Suisse said based on ATO estimates, $240 billion – of the $568 billion in SMSFs – is in equities, accounting for around 42 per cent of total assets.

More than half of the $26 billion generated in income in 2014 by SMSFs was in the form of dividends paid by Australian listed companies including franking, according to Credit Suisse.

“Another 20 per cent came from domestic property, post interest and running expenses,” said the paper.

“Another fifth would have come from domestic cash holdings.”

Credit Suisse said the remaining $1 billion in income was from all other assets including international shares, unlisted equities, bonds and overseas property.

“With cash rates falling, we believe it is becoming painfully clear that selfies will have to contend with a future income deficit,” said Credit Suisse.

The research paper said as of the end of 2014 SMSFs had $157 billion in cash on deposit in Australia.

“This would have been earning around 3.2 per cent for an annualised return of $5.1 billion,” said Credit Suisse.

“However with the cash rate now 25 basis points lower, the dollar return has come down to $4.6 billion per annum.”

The research paper said SMSFs have three options to make up this loss.

“They can work longer and try to make it up via savings; they can spend less in retirement and potentially cancel that once-in-a-lifetime walking tour though the Pyrenees or they can take on more risk with their asset allocation,” said the paper.

Credit Suisse said it remains positive on Aussie equities due to the supply/demand situation remaining tight.

“RBA rate cuts should further support the dividend trade,” said the paper.

“We look for stocks with above median dividend yields that benefit from above median dividend growth. They include Rio Tinto, Macquarie Group, Flight Centre and Dulux.”