Underwater welder salary: How to compare job offers using take-home pay

Introduction

When you see an advertisement for an underwater welder job, the headline figure can be impressive. But what actually lands in your bank account each fortnight? The difference between a quoted salary and your take-home pay is shaped by tax, the Medicare levy, and whether the rate is for offshore or inshore work. This guide helps you compare job offers by focusing on the amount that reaches your account after all deductions.

Understanding the underwater welder salary under the award

Underwater welding is classified as “hyperbaric welder” under the Professional Diving (Industrial) Award [MA000108]. Fair Work Ombudsman publishes the official pay guide, and the latest rates (effective from the first full pay period on or after 1 July 2025) are as follows:

• Offshore full-time hyperbaric welder: $2,748.17 per week, $72.32 per hour
• Inshore full-time hyperbaric welder: $1,342.70 per week, $35.33 per hour
• Offshore casual hyperbaric welder: $41.85 per hour (includes casual loading)
• Inshore casual hyperbaric welder: $44.16 per hour (includes casual loading)

These rates are minimums. Some employers may offer above-award pay, but the award sets the floor. The award also specifies allowances such as diving allowance, hyperbaric welding allowance (per linear millimetre of weld accepted), and living-away-from-home allowance. You can see the full schedule in the Fair Work pay guide.

Calculating take-home pay

To work out what you actually receive, you need to subtract income tax and the Medicare levy. The Australian Taxation Office’s 2026–27 tax rates for residents are:

• Up to $18,200: nil
• $18,201 to $45,000: 15c per $1 over $18,200
• $45,001 to $135,000: $4,020 plus 30c per $1 over $45,000
• $135,001 to $190,000: $31,020 plus 37c per $1 over $135,000
• Over $190,000: $51,370 plus 45c per $1 over $190,000

The Low Income Tax Offset (LITO) can reduce tax for those earning under $66,667, but full-time underwater welders typically earn above that threshold.

Medicare levy is 2% of taxable income. The latest published single-person Medicare thresholds are $28,011 and $35,013. If your taxable income is between these amounts, the levy is reduced by 10c per $1 over $28,011. Above $35,013 you pay the full 2%. A full-time underwater welder salary will exceed $35,013, so the full 2% applies.

Example: Offshore full-time hyperbaric welder

Annualise the weekly rate: $2,748.17 × 52 = $142,905. Tax on $142,905 = $31,020 + 37c × ($142,905 – $135,000) = $31,020 + $2,925 = $33,945. Medicare levy = 2% × $142,905 = $2,858. Total deductions = $36,803. Annual take-home = $106,102. Fortnightly take-home ≈ $4,081.

Example: Inshore full-time hyperbaric welder

Annualise: $1,342.70 × 52 = $69,820. Tax = $4,020 + 30c × ($69,820 – $45,000) = $4,020 + $7,446 = $11,466. Medicare = 2% × $69,820 = $1,396. Total deductions = $12,862. Annual take-home = $56,958. Fortnightly ≈ $2,191.

These are estimates and exclude HELP/HECS, Medicare levy surcharge, or salary sacrifice. Use the Clearance tool for a personalised calculation.

Comparing job offers

When you receive multiple offers, compare them on a take-home basis. Here are key factors:

Offshore vs inshore

Offshore rates are significantly higher, but they often involve longer shifts, time away from home, and different working conditions. The award’s disability allowance ($84.94 per on-duty day on a support vessel for full-time) and living-away-from-home allowance ($75.66 per day) add to your gross pay but are also taxable. Factor in whether accommodation and meals are provided (reimbursable under the award).

Casual vs full-time

Casual rates include a 25% loading. For offshore hyperbaric welders, the casual hourly rate is $41.85 vs $72.32 full-time. Wait – that seems lower? Check the award: the casual loading is built into the hourly rate, but full-time rates are based on a 38-hour week. Casual employees do not receive paid leave, so the higher hourly rate compensates for that. When comparing, consider the total package including leave entitlements.

Superannuation

From 1 July 2026, the super guarantee is 12% of ordinary time earnings, up to a maximum contribution base of $270,830. If an offer says “$72.32 per hour plus super”, the super is on top and does not reduce your take-home. If it says “$72.32 per hour inclusive of super”, your base pay is lower. Always clarify. Learn more about Super.

Allowances

The award includes several allowances that boost gross pay:

• Diving allowance: $4.99 per metre for non-ADS dives, minimum $74.50 per 12-hour period
• Hyperbaric welding allowance: $6.16 per linear millimetre for weld accepted by client
• Meal allowance: $11.35 per meal
• Protective clothing reimbursement

These are taxable and should be included in your take-home estimate.

Using the benchmarks

Fair Work sets the national minimum wage at $26.44 per hour and $1,004.90 per week. The ABS reports average full-time adult ordinary time earnings of $2,083.70 per week ($108,352 annually). An offshore underwater welder salary of $2,748.17 per week is well above the average, while inshore rates are closer to the all-employees average of $1,579.20 per week. See the Benchmarks page for context.

Final tips

• Always get the offer in writing with a clear breakdown of base rate, allowances, and super.
• Use the Tax and Medicare guide to check your withholding.
• Remember that the Medicare levy surcharge applies if you don’t have private hospital cover and your income exceeds $93,000 (single). That’s an extra 1% to 1.5%.
• If you are a contractor rather than an employee, your tax treatment differs. Seek professional advice.

By focusing on take-home pay rather than the headline number, you can make a clearer comparison between an offshore hyperbaric welder role and an inshore position, or between casual and permanent employment. The underwater welder salary is generous, but what matters is what you keep.