Although 31 October falls on a weekend in 2026, you still need to lodge your clients' overdue prior year returns and add new clients to your client list by that date – not the next business day.
If you miss the deadline, your clients won't receive your lodgment program due date for their 2026 tax return.
It can take up to 3 weeks for due dates to update on our systems after you've lodged your clients' prior year returns. You should not request lodgment deferrals for their 2026 returns in the meantime.
Some new clients will need to nominate you as part of the client-to-agent linking process before you can add them to your client list.
Find out how taxpayers with overdue tax returns can affect lodgment due dates.