Key Tax Dates Australia 2027

General information only. Speak with a registered tax or BAS agent for advice.

This calendar covers the 2026–27 financial year — 1 July 2026 to 30 June 2027. Every date below is taken from the ATO’s own published due-date pages for this year, not carried forward from last year’s calendar, because due dates move when they land on a weekend or a public holiday and several of this year’s do.

If you are looking for the year that ended on 30 June 2026, see Key Tax Dates Australia 2026 — it stays live and pinned to that year.

The 2026-27 Financial Year at a Glance

Four things changed on 1 July 2026, and three of them change how this calendar works rather than just what the numbers are:

• Payday super replaced the quarterly SG cycle. Employers no longer pay super four times a year against 28 July / 28 October / 28 January / 28 April. Super guarantee must now reach the employee’s fund within 7 business days of each payday. There are no quarterly SG rows in this calendar after 28 July 2026 — that last one belongs to the 2025-26 year.
• The second marginal tax rate fell to 15%. For 2026-27 the $18,201–$45,000 bracket is taxed at 15c in the dollar, down from 16c. The other thresholds and rates are unchanged.
• The concessional contributions cap rose to $32,500, up from $30,000, through AWOTE indexation.
• The maximum super contribution base became annual. It is $270,830 for the whole of 2026-27, replacing the old $62,500-per-quarter cap.

The SG rate itself did not move. It reached 12% on 1 July 2025 and stays there.

How to Read the Dates

The ATO publishes standard due dates that may land on a weekend or a public holiday. When one does, you can lodge or pay on the next business day, and a “business day” excludes Saturdays, Sundays and any day that is a public holiday for the whole of any state or territory — even a state you are not in.

That rule bites six times this year, so the shifted date is shown in each row rather than left for you to work out.

Key Dates by Month

July 2026

August 2026

September 2026

October 2026

November 2026

December 2026

January 2027

February 2027

Quarter 2 is the one quarter with no extra time for lodging online: its 28 February date already contains a one-month extension.

March 2027

April 2027

May 2027

June 2027

Super Under Payday Super

The quarterly table that used to sit here is gone. From 1 July 2026 there is no quarterly SG due date to plan around — there is a rolling deadline attached to every payday.

A contribution is on time if it is received by the employee’s fund, with the information needed to allocate it, within 7 business days of the day you pay qualifying earnings. The ATO calls that payment day the QE day; in most payrolls it is simply payday. A business day excludes weekends and any public holiday that applies across a whole state or territory, so a long weekend anywhere in Australia lengthens your window.

Two practical consequences:

• Clearing house lag is now yours to manage. The 7 business days run to receipt by the fund, not to the day you send the money. If you pay through a clearing house or your payroll software, its processing time comes out of your 7 days — which is why the ATO’s advice is to pay super on payday rather than at the deadline.
• The last quarterly deadline was 28 July 2026. That covered Q4 2025–26, and 28 August 2026 was the last date for lodging a quarterly SGC statement if that payment was late or short.

The maximum contribution base is now annual: once an employee’s qualifying earnings reach $270,830 in 2026-27, you can stop paying the minimum SG for them for the rest of the year.

FBT Year

The FBT year does not line up with the financial year — it runs 1 April 2026 to 31 March 2027. Key dates for the year ending 31 March 2027 are 21 May 2027 (lodging by paper) and 25 June 2027 (agents lodging electronically). If you provide cars, entertainment, low-interest loans or expense reimbursements to employees, FBT is in scope.

End of Financial Year Checklist (by 30 June 2027)

• Review deductible expenses and make sure receipts are captured
• Consider topping up concessional super contributions — the cap is $32,500 for 2026-27, and employer contributions count toward it
• Make sure any super you want deducted this year is received by the fund by 30 June, not merely sent
• Make charitable donations to DGR-registered organisations
• Review the investment portfolio for capital gains or losses you intend to realise this year
• Confirm trust distribution requirements with your accountant before year end — see trust distribution resolutions and 30 June
• Review asset depreciation and write off low-value or obsolete assets

Compliance Checklist

• Confirm your entity type and reporting cycle with the ATO or your agent — the dates above are the standard cycle, and yours may differ
• Lodging your quarterly BAS online can earn an extra two weeks for quarters 1, 3 and 4; quarter 2 is excluded because its date already includes an extension
• Agent-lodged returns generally get later dates than the ones shown for self-lodgers — engaging an agent before 31 October is what makes you eligible
• If you cannot pay on time, contact the ATO before the due date. Lodging on time and arranging a payment plan avoids the failure-to-lodge penalty even when payment is delayed

Sources (verified 3 September 2026)

• ATO registered agent lodgment program 2026-27 — due dates by month
• ATO lodgment and payment dates on weekends or public holidays
• ATO due dates for lodging and paying your BAS
• ATO preparing your tax return — individual due date
• ATO payment deadlines for Payday Super
• ATO super guarantee — rates and maximum contribution base
• ATO contributions caps
• ATO tax rates for Australian residents

Next Steps

• Estimate what you will owe with the Tax Return Calculator
• Check a quarter’s position with the BAS Calculator
• Compare with last year’s calendar: Key Tax Dates Australia 2026