Tax Filing After Divorce in Australia

Your Tax Return Uses the Right Relationship Status

The Australian Taxation Office needs your relationship status recorded accurately, and the timing matters more than most people realise. Several tax calculations — the Medicare Levy Surcharge, family tax benefit entitlements, and the private health insurance rebate — depend on whether you are assessed as single or partnered. Getting the transition wrong means either overpaying or being hit with an unexpected liability at tax time.

Updating Your Relationship Status With the ATO

You can update your relationship status through myGov (linked to the ATO) or by submitting an official paper amendment form with certified identity documents. The ATO uses your relationship status as at 30 June each year for your annual return, so the key date is which financial year your separation fell in.

If you separated in February 2026, your 2025-26 tax return (for the year ending 30 June 2026) should reflect your status as separated. You report your income as an individual, not as a couple.

The practical impact hits two areas immediately:

Medicare Levy Surcharge. If you earned above the singles threshold and did not hold private hospital cover, you may now be liable for the surcharge. As a couple, the combined income threshold was higher. As a single person, you are assessed against the lower singles threshold. Check whether you need to take out hospital cover to avoid the surcharge.

Private health insurance rebate. Your rebate tier is recalculated based on your individual income rather than combined family income. For many people, this means a higher rebate percentage — a rare post-divorce financial improvement.

Marriage Breakdown Rollover Relief

When property is transferred between spouses as part of a divorce settlement, the transfer would normally trigger a capital gains tax event. The "marriage breakdown rollover relief" under Subdivision 126-A of the Income Tax Assessment Act 1997 defers this CGT liability.

The deferral applies when the transfer happens under:

• A court order (consent orders or contested orders from the FCFCOA)
• A binding financial agreement (BFA)
• An arbitral award under family law

The rollover is not an exemption — it defers the gain to the receiving spouse. When they eventually sell the asset, they inherit the original cost base and acquisition date for CGT purposes. If the receiving spouse later sells the property for a profit, they pay CGT on the total gain from the original purchase, not from the date of the divorce transfer.

This applies to the family home, investment properties, shares, and other CGT assets transferred as part of the settlement. For the family home, the main residence exemption may apply independently, but that depends on whether the receiving spouse continues to use it as their primary residence.

Superannuation and Tax

Superannuation splits under a family law order are not taxable events. The transferred amount moves from one super fund to another without triggering a tax liability for either party. The receiving spouse's fund treats the incoming balance under the same tax rules as any other contribution — the preservation rules and eventual withdrawal tax depend on the components (taxed vs untaxed) that were transferred.

What About Spousal Maintenance?

Spousal maintenance is separate from the property settlement. Tax treatment depends on the payment and the recipient's circumstances, so check current ATO guidance or a tax adviser before lodging; do not assume a payment is assessable or deductible.

Keeping Your Name Consistent Across the ATO and Super

After updating your name with the ATO, make sure the name on your superannuation fund records matches exactly. A mismatch between your ATO record and your super fund record can cause contribution rejections, transfer failures, and delays in processing rollovers. Update both at the same time.

The Broader Tax Picture

Tax is one piece of the post-divorce financial transition. The Northern Territory After-Divorce Checklist covers the ATO update alongside property transfers, superannuation splits, and the stamp duty exemption process — all of which have tax implications that interact with each other.

See more Northern Territory guides →