About Harbour

Harbour is an Australian-built calculator and working-paper tool that helps employers and accounting practices determine Super Guarantee due dates under the ATO’s Payday Super rules (from 1 July 2026).

We provide:

• A free public calculator that runs entirely in your browser
• A practice workspace for multi-client scenarios, saved drafts and exportable working papers

Harbour is not a registered tax agent, does not hold an Australian Financial Services Licence, and does not provide tax, legal or financial advice. All outputs are indicative working papers only. You remain solely responsible for meeting your Super Guarantee obligations and for confirming every figure independently with the ATO or your professional advisers.

Rule version currently in use: 2026.2.0 (see methodology for the published logic and sources).