31 July 2026

• Lodge TFN report for closely held trusts if any beneficiary quoted their TFN to a trustee in quarter 4, 2025–26.

21 August 2026

• Lodge and pay July 2026 monthly business activity statement.

25 August 2026

• Lodge and pay quarter 4, 2025–26 activity statement if you lodge electronically.

28 August 2026

• Lodge and pay quarter 4, 2025–26 Superannuation guarantee charge statement – quarterly form if the employer did not pay contributions on time and in full for this quarter.