G'day, what is the correct method for contributing pretax funds into a superannuation account?
Premise:
I occasionally work on side projects and have an ABN account that generates irregular income. Due to the sporadic nature of this income, I do not have a regular payroll system in place to pay myself a salary or make regular superannuation contributions. I would like to contribute to my superannuation from any profits after expenses. These contributions are from pretax funds and need to be taxed at 15%.
To make contributions to superannuation, you can do so through the super fund (member, spin/usi), which requires a payroll system, or via BPAY. However, BPAY contributions are assumed to be non-concessional and are not taxed. If the contribution needs to be concessional, the super fund must be informed so that they can tax it at 15% and notify the ATO about the deduction (which is not correct as I'm not claiming a deduction, given it's from pre tax funds)
Hope the question is clear. TIA
—— Update ——
I managed to follow up on what @netjock mentioned and checked with my super account's help desk. They said as the funds from ABN account belong to a pty ltd, it's best to setup a clearing house and make contributions through there. So you can either do it through ATO's clearinghouse or as I am with Australian Super they have their own which is QuickSuper. It does require setting up an employer account with them. ATO's clearing house advertises as no fees involved while quick super is also no fees except for special circumstances which does not affect me. I will be looking into quicksuper for now.
If it's within your concessional cap, contribute from post-tax funds and you'll get the difference back via your tax return.