"The main winners from a lower currency, from an income sense, will be company profits and government tax revenues."
It is also one of the reasons why the CBA recently moved its forecast for a Reserve Bank interest rate hike from February to August.
Mousina said the lower exchange rate was starting to act as a buffer to the fall in the prices of our mining and resource exports.
"Our commodity prices index has fallen by nine per cent over the past three months in US dollar terms, but is only two per cent lower in Australian dollar terms," she said.
JP Morgan economist Tom Kennedy said the weaker Aussie dollar helped but was only the first piece in the puzzle to help the sluggish retail sector.
"While a weaker Australian dollar improves domestic retailers' competitiveness, we think the currency's recent declines are far from a game-changer for the embattled sector," he said.
"We view modest wage growth, weak consumer confidence, and elevated unemployment as the major constraints to any sustained pick-up in household spending."
The Aussie dollar's recent fall was mainly due to the US dollar getting a boost from an improving American economy and that the US Federal Reserve was considering its first interest rate hike in nine years.
Further indications on the timing of the Fed's rate rise are expected the central bank's boss Janet Yellen holds a press conference early on Thursday morning, Australian time, after its regular policy meeting.
LTG GoldRock director Andrew Barnett is confident the Australian dollar will stay around its current levels or even go a little lower this year because the US rate hike is inevitable.
"She realises that she's going to have to raise rates at some point next year if the current economic trends continue.
"I think the smart money will speculate on higher rates and push that US dollar higher," he said.