Jet - a couple of issues to consider - particularly if your dad is on a Centrelink Pension - if not an he's working then any income is added to his taxable income anyway??
Usual blah blah about this not being advice etc and no one but a registered accountant can give tax advice... But you could look at these points... when you meet with one to discuss...
1) if you give the money to him it may be considered to be an asset and may decrease pension payment under either the assets or income test. And you run a massive risk for the fact if he were to pass away, from that moment it becomes part of his estate and with the legal fraternity happy to give anything a go for a $. Even if you do up a legal agreement (and it's not considered an asset but offset as a liability - it may still be considered under the income test as funds in his name) you will then also have to deal with the executor to claim the repayment of the 'loan' which may take some time if probate needed and what if the will was contested let alone waiting for the tax on the estate to be finalised before money's paid back... Let alone the risk he spends it all on Black at the casino, pokies a the local or maybe gives it away to some lonely Nigerian bloke named Trixie
- ok now my imagination is getting away from me - too late at night.
2) if you do a joint account with him then 50% of the funds become his and again assessed for Centrelink assets/income test. Possible loss of full pension discounts (rates etc). Not so much of an issue with estate planning as the account is not part of the estate. Interest then split equally and you pay tax on your part anyway.
3) setting up a discretionary trust may be the closest to protecting your capital and give you the ability to provide the interest to him as a beneficiary - but check the costs of set up and then ongoing admin costs as mentioned if set up with relatively small amount of $'s then not worth it. Again if interest paid to him via a trust regularly you may find Centrelink claim this under the income test?
4) keeping the Term Deposit with you or your wife (whichever is the lower income earner with the lowest marginal tax rate may be the way to go) and then take a bit of a hit with tax then pay the remaining amount to him. Again if you pay funds directly to him he is obliged to tell Centrelink of the change over a certain $ value. Or maybe you pay one of his bills for him? Private Health/Electricity/Rates?
Big negative nancy here hey...
Moral of the story - as mentioned - see an accountant