How does RDO accrual work?

On a standard 38-hour-week RDO system you work 8 ordinary hours a day but are paid for the 38-hour average of 7.6 hours. The 0.4-hour difference each day accrues toward a paid rostered day off. After 19 working days you've banked 7.6 hours — one full RDO. This is why it's called the '19-day month'.

How many days does it take to accrue an RDO?

At the standard rate of 0.4 hours per day, it takes 19 working days to bank one 7.6-hour RDO. If your daily hours are different, enter your ordinary and paid hours to see your own accrual rate.

What happens to my RDO balance when I leave?

Any RDO credit you've accrued but not taken is paid out to you when your employment ends, the same as unused leave.

What is a 9-day fortnight?

A 9-day fortnight is a variant of the RDO system where you work nine slightly longer days over a fortnight and take the tenth day off as a paid RDO. Enter your actual ordinary and paid hours per day to model it.

RDO Accrual & Balance Calculator

Track your rostered day off accrual — RDO hours banked, whole RDOs available and how many days until your next RDO under the 19-day month and 9-day fortnight.

Last verified: 3 June 2026Jump to calculator ↓

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General information and estimates only — not legal, financial or tax advice. Always check your specific award, agreement or contract, or a qualified professional, before you rely on the result.

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