What Division 293 tax is
Division 293 tax is an additional tax on super contributions that reduces the tax concession for people whose combined income and concessional contributions for Division 293 purposes exceed $250,000 in an income year. It is charged at 15% of the excess over the threshold or the taxable super contributions, whichever is less. The rules sit in Division 293 of the Income Tax Assessment Act 1997, titled “Sustaining the superannuation contribution concession” — the intent is to reduce, not remove, the concession higher earners receive.
Concessional contributions are ordinarily taxed at 15% inside the fund, paid by the fund from the contribution. Division 293 adds a further 15% on the affected slice, so those contributions bear an effective 30% in total. Everything below the threshold, and every dollar of contributions not caught by the lesser-of calculation, keeps the standard treatment.
Note
There is nothing extra to lodge. The ATO works out any Division 293 liability from your tax return and your fund’s contribution reporting, and sends a separate notice of assessment if tax is payable.