21:7 Roster Salary Calculator – Three Weeks On, One Off
The 21:7 roster — three weeks on, one week off — is a high-income FIFO pattern used in remote mining and resource operations across Australia. With only one week at home between three-week swings, this roster is suited to workers focused on maximising earnings in the short term, paying off debt, or saving for major financial goals.
What Is a 21:7 Roster?
A 21:7 roster means you work 21 consecutive days on site followed by 7 days off. The 28-day cycle repeats approximately 13 times per year, giving you around 274 working days — one of the highest annual totals. With 12-hour shifts, this translates to very high gross income. However, three weeks away from home is demanding, and this roster carries a higher burnout risk. It's most commonly found on ultra-remote sites in WA's Pilbara and Goldfields regions, and in the Northern Territory.
Industries That Use the 21:7 Roster
Common locations: Remote WA, NT
Pros & Cons of the 21:7 Roster
Advantages
Disadvantages
Working Days Per Year on a 21:7 Roster
274
Working days/year
91
Days off/year
13
Cycles per year
Example Salary Estimates – 21:7 Roster
Based on 12-hour shifts and 274 working days per year. Figures are gross annual income before tax, super, and allowances.
| Hourly Rate | Est. Annual Gross Income |
|---|---|
| $56/hr | $184,128 |
| $63/hr | $207,144 |
| $70/hr | $230,160 |
| $78/hr | $256,464 |
* Estimates only. Actual pay may vary based on penalty rates, allowances, overtime, and employer agreements. Use the calculator below for a detailed breakdown including Australian tax rates.
Calculate Your Exact 21:7 Roster Pay
Get a detailed breakdown of your take-home pay including Australian tax, superannuation, allowances, and penalty rates.
Who Is the 21:7 Roster Best For?
- Maximum income
- Singles
- Debt repayment
- Short-term only