Prudent Accountants

Monthly BAS (GST & PAYG Withholding)
2026-01-21
Monthly BAS (GST & PAYG Withholding)
Businesses with GST turnover ≥ $20 million or large PAYG withholding obligations must lodge a Monthly BAS.
Each BAS is due on the 21st of the following month. It includes GST, PAYG Withholding, PAYG Instalments, and other taxes.
Late lodgment may result in penalties and interest, so it’s important to lodge and pay on time.

Quarterly BAS, IAS & Superannuation Guarantee
2026-03-02, 2026-04-28
🧾 Quarterly BAS, IAS & Superannuation Guarantee
In Australia, many small to medium-sized businesses and employers report and pay their tax obligations on a quarterly basis. This includes:

Business Activity Statements (BAS) — for GST and PAYG instalments
Instalment Activity Statements (IAS) — for PAYG instalments or withholding (where not registered for GST)
Superannuation Guarantee (SG) contributions — for employee super

📆 Quarterly Reporting Periods & Due Dates

Quarter
Reporting Period
Due Date

Q1
1 July – 30 September
28 October

Q2
1 October – 31 December
28 February

Q3
1 January – 31 March
28 April

Q4
1 April – 30 June
28 July

Important: If any of the due dates fall on a weekend or public holiday, the deadline is moved to the next business day.

📄 What Must Be Reported
1. BAS (Business Activity Statement):

GST (Goods and Services Tax) collected and paid
PAYG Instalments (business income tax prepayments)
PAYG Withholding (if you withhold tax from employee wages)
Other taxes (e.g. FBT instalments, luxury car tax if applicable)

2. IAS (Instalment Activity Statement):

Used by businesses that do not report GST
Primarily covers PAYG instalments and PAYG withholding

3. Superannuation Guarantee (SG):

Employers must make SG contributions
Due quarterly by the same dates as BAS
Must be paid and received by the employee’s super fund by the deadline

⚠️ Penalties for Late Lodgment or Payment

Failure to Lodge (FTL) penalty: From $313 per 28-day period late (per obligation), up to $1,565 for small businesses.
Super Guarantee Charge (SGC): If SG is paid late, it becomes non-deductible and attracts interest and admin fees.
General Interest Charges (GIC): Applied to late payments.

✅ Tips to Stay Compliant

Use accounting software (like Xero, MYOB, or QuickBooks) to automate reminders and pre-fill BAS data.
Ensure payroll systems are up to date for accurate SG and PAYG reporting.
Lodge electronically for faster processing and confirmations.
Work with a registered tax or BAS agent to gain extra time for lodgment if needed.
