Geologist Salary in Australia: Gross Pay, Super, and Tax Explained

What Does a Geologist Earn in Australia?

If you are researching a geologist salary in Australia, the headline figure is a median full-time weekly earning of $2,914 for the occupation group Geologists, Geophysicists and Hydrogeologists. That is from the Australian Bureau of Statistics Survey of Employee Earnings and Hours, May 2025, as reported by Jobs and Skills Australia. Annualised, that is roughly $151,528 — well above the national full-time adult ordinary-time earnings of $108,352 (index 100).

To put it in Salary Index terms: divide $151,528 by $108,352 and multiply by 100, giving an index of about 140. That means a typical geologist earns 40% more than the national line. The mining industry, where many geologists work, has an index of 154.7, so this fits.

How the Geologist Salary Breaks Down

The ABS data shows geologists work an average of 51 hours per week (full-time), with median hourly earnings of $61. Only 19% of the workforce is female, and the median age is 44. Most geologists (85%) work full-time. The main industries are Mining and Professional, Scientific and Technical Services.

But not every geologist earns the median. Entry-level or award-covered roles pay less. The Hydrocarbons Field Geologists Award 2020 (from Fair Work Ombudsman) sets minimum rates for field geologists in oil and gas. For example:

• Trainee mudlogger (with a geology degree): annual retainer $66,832, plus daily rig allowance $104.72, estimated annual earnings $84,006 (even time roster).
• Competent mudlogger (with degree): $66,832 retainer, $145.45 daily rig allowance, estimated $90,686.
• Data engineer: $70,039 retainer, $157.09 daily rig allowance, estimated $95,802.

These award rates include compensation for weekends, public holidays, and remote work. Casual employees get a 25% loading. The award minimums are above the national minimum wage ($26.44/hr, index 48.2) but below the median geologist salary.

Gross Pay, Super, and Tax

When discussing a geologist salary, it helps to look at the full picture: gross pay, superannuation, and tax.

Superannuation: From 1 July 2026, the super guarantee is 12%, paid by the employer on top of gross salary. For a geologist on the median $151,528, that adds about $18,183 per year into super (up to the maximum contribution base of $270,830). Super is taxed at 15% within the fund, not at your marginal rate.

Income tax (2026-27): For a resident earning $151,528, the tax brackets are:

• $0 – $18,200: nil
• $18,201 – $45,000: 15% ($4,020)
• $45,001 – $135,000: 30% ($27,000)
• $135,001 – $190,000: 37% ($6,115 on the amount above $135,000)

Total tax: about $37,135. Plus Medicare levy of 2% ($3,030). That gives take-home pay of roughly $111,363 (excluding HELP, salary sacrifice, or Medicare levy surcharge).

If you are on the award minimum of $84,006, tax and Medicare would be about $17,600, leaving around $66,400 take-home.

State and Industry Context

Geologist pay varies by location. The states page shows Western Australia has an index of 106.9, reflecting the resources sector. Many geologists work in WA, where salaries can be higher. The ACT index is 109.9, but fewer geologists are there. The mining industry index of 154.7 aligns closely with the geologist median.

Where to Find More

For the latest award rates, check the pay guides from Fair Work Ombudsman. If you are comparing roles across sectors, the industries page gives benchmarks. And remember, the Salary Index is a tool to compare any gross annual salary to the national line.

Caveats

• The median figure is for the occupation group including geophysicists and hydrogeologists; pure geologist salaries may differ slightly.
• Many geologists are covered by enterprise agreements that pay above award.
• The Hydrocarbons Field Geologists Award only covers field geologists in oil and gas; other geologists (e.g., in mining exploration) may fall under different awards or no award.
• ABS data is from May 2025; current market conditions may shift earnings.

Summary

A typical geologist salary in Australia is around $151,528 per year (index 140), well above the national average. Entry-level award rates start around $84,000. Super adds 12%, and tax takes roughly 25-30% of gross. Whether you are a graduate or a senior data engineer, the geologist pay scale is strong — especially in the resources sector.