Acknowledgement of Service in a Divorce: What It Is and How It Works

If you've filed a sole application for divorce in Australia, the words "Acknowledgement of Service" will show up fast — and it's the point where a lot of DIY applications stall. The form itself is simple. Getting it signed is where things go sideways.

Here's what it actually does, how the process works, and your options when a spouse won't cooperate.

What the Acknowledgement of Service is

Australian divorce law requires that your spouse formally receives the divorce application — the court won't grant a divorce it thinks the other person never saw. The Acknowledgement of Service (Form 6, under the Federal Circuit and Family Court rules) is the document your spouse signs to confirm: "Yes, I received the application on this date."

It is not agreement to the divorce. Australia has no-fault divorce — your spouse cannot block the divorce by refusing to sign, disagreeing with it, or ignoring it. Signing the acknowledgement simply proves delivery. This is the single most misunderstood point in the whole service process, and it's worth telling your spouse exactly that: signing doesn't weaken their position on property or parenting; refusing doesn't stop the divorce.

How it's normally used: service by post

The typical sequence for a sole application:

1. File on the Commonwealth Courts Portal and download your sealed documents — the application plus the court-stamped copies.
2. Post the service pack to your spouse: the sealed application, the Acknowledgement of Service form, a covering letter, and a stamped self-addressed envelope for the return.
3. Your spouse signs the acknowledgement in front of a witness (any adult) and posts it back.
4. You complete an Affidavit of Service by Post, attaching the signed acknowledgement, and upload both to the portal — within 28 days of filing (42 days if your spouse is overseas).

If you're not certain the signature on the returned form is your spouse's, the server may also need an Affidavit Proving Signature — someone who knows their handwriting confirms it, or you attach prior documents showing their signature.

If the papers were hand-delivered instead

Hand service (by a process server or any adult who isn't you — you're prohibited from serving your own documents) doesn't strictly require the acknowledgement at all. The server's Affidavit of Service, describing when, where, and how they identified your spouse, is enough. Many process servers still carry the acknowledgement form and ask for a signature on the spot, which makes the affidavit cleaner, but a refusal to sign doesn't defeat hand service — the server just notes the refusal in their affidavit.

Professional process servers in metro Adelaide typically charge $120–$200, which buys you a correctly completed affidavit the first time.

When your spouse won't sign or return it

This is common, and it is survivable. In rough order of escalation:

• Switch to hand service. If post failed, pay a process server. Their affidavit stands alone — no signature needed.
• Substituted service. If your spouse is ducking service, you file an Application in a Proceeding with an affidavit documenting your attempts, and ask the court to approve an alternative channel — email, text, social media, or service on a family member they're in contact with.
• Dispensation of service. If you genuinely cannot find them, the court can waive service entirely — but only after you show real search efforts: last known addresses, employers, family, social media, electoral roll checks, sometimes a skip trace. The court wants a paper trail, so log every attempt with dates.

Each of these adds weeks. If you already suspect your spouse will be difficult, skip straight to a process server — it's cheaper than an adjourned hearing.

Why it matters: the hearing date depends on it

The court won't finalise a sole divorce without proof of service uploaded to the portal. No affidavit of service (or court order dispensing with service) means an adjournment — and if the application is eventually dismissed, you're paying the $1,170 filing fee again to start over. Service paperwork is boring, but it's the single biggest technical trap for self-represented filers.

If you want the full sequence — filing, the service pack checklist, affidavit templates, and the substituted-service workflow — the South Australia Divorce Filing Process Guide walks through each step in order, including a service tracker worksheet and a search-effort log for missing spouses.

See more South Australia guides →