Tax Deductions and Medicare Levy Rules for Australian Defence Force Members

With RAAF Base Darwin and Robertson Barracks right on our doorstep, A1 Accounting & Tax Solution prepares a large number of returns for serving and former Australian Defence Force (ADF) members each year. Defence pay isn't a simple salary — it's a mix of base pay, allowances, and in-kind benefits, and it comes with its own deduction rules and a unique Medicare levy position. Here's what ADF members need to know for the current tax year.

Income That Isn't Always What It Seems

Defence salary packages include base pay plus a wide range of allowances — some taxable, some not. Reimbursements (for example, being repaid for a specific expense you've incurred) generally aren't included as income and can't be claimed as a deduction, whereas allowances usually are assessable income, even where your employer doesn't separately itemise them on your income statement.

If you're deployed overseas on eligible duty with a specified organisation in a specified area, your salary and allowances for that period may be exempt from income tax entirely, provided the Chief of the Defence Force has issued a certificate confirming your eligible duty status. This exemption doesn't extend to other income you earn or receive during that time — rent, dividends, interest, and capital gains are still taxable. Members who served in specified overseas localities but don't qualify for the full exemption may instead be entitled to the overseas forces tax offset.

What ADF Members Can Claim

The ATO publishes a dedicated occupation guide for Defence Force members, and the deductions available broadly follow these categories:

• Uniforms and clothing — the cost of buying, laundering, and repairing compulsory uniform items (service dress, ceremonial wear, general duty uniforms) is deductible. Non-compulsory uniform items generally aren't, and everyday conventional clothing (including things like running shoes) can't be claimed just because you wear them for work, unless enforced as part of a compulsory and distinctive uniform policy.
• Protective items — clothing, footwear, or equipment that genuinely protects you from injury or protects your uniform from damage can usually be claimed. This extends to sun protection — sunglasses, hats, and sunscreen — for members who work outdoors for all or part of the day.
• Work-related travel — travel between postings, courses, and duties can attract deductions, but usual apportionment rules apply: only the work-related portion of a car or travel expense (fuel, servicing, insurance) is deductible, and home-to-base travel is generally treated the same as any other employee's commute.
• Tools and equipment — where Defence doesn't supply necessary tools or equipment for a trade role, the cost of purchasing and maintaining them can be deductible.
• Self-education — courses that maintain or improve skills required in your current role, or are likely to lead to an increase in income from that role, may be deductible.

The consistent theme across all categories is that you can only claim the portion of an expense that directly relates to earning your income, and you need records to back every claim — the ATO's myDeductions tool in the ATO app is a straightforward way for serving members to track receipts throughout the year.

The Medicare Levy: Why ADF Members Are Different

This is where Defence pay diverges most from civilian employment. ADF members receive full free medical treatment through Defence health arrangements, and this generally makes them eligible for a Medicare levy exemption under Category 1.

• Full exemption — if you had free medical treatment entitlement under Defence force arrangements (or hold a DVA Gold Card with full treatment entitlement) for the whole income year, and your dependants — if any — are also covered or otherwise don't create a levy liability, you can generally claim a full exemption from the 2% Medicare levy.
• Half exemption — applies in several situations, most commonly where you have a dependant (such as a spouse) who wouldn't otherwise have to pay the levy — for example, because their taxable income falls under the low-income threshold — or where both partners are ADF members and enter into a family agreement, since only one person can claim the full exemption between them in that case. That agreement doesn't need to be sent to the ATO, but must be kept with your records.
• Part-year service — if you joined the ADF partway through the year, the exemption applies only from the date you became entitled to free medical treatment. Members who transition between the Permanent Forces and Reserves during the year (for example, moving to SERCAT 5 reserve service) will typically be exempt for the period of full-time service but may become liable for the levy for any subsequent period as a part-time reservist.
• Spouse on civilian PAYG — a common scenario for Darwin families: one partner serves and has full exemption entitlement, while the other is a civilian employee having the Medicare levy withheld through PAYG. The ADF member can generally still claim their own full exemption — but depending on the civilian spouse's income and private health insurance status, the Medicare Levy Surcharge may still be a separate consideration for that spouse.
• It's not automatic — the exemption is claimed under Category 1 on your tax return, not applied automatically. You need to hold the right evidence (such as confirmation of your medical treatment entitlement or a DVA Medicare Levy Exemption certificate) and keep it on file.

Getting It Right

If you're a serving member, reservist, or veteran in the Darwin region, A1 Accounting & Tax Solution can review your income statement, apply the correct deduction and exemption categories, and make sure your return reflects your actual entitlements.

This article is general information only and doesn't take into account your personal circumstances. Contact A1 Accounting & Tax Solution for advice specific to your situation.