Registered Tax Agent 2604 5805 · Chartered Accountants ANZ · Sydney CBD
02 9267 6533
Tsia Partners
TSIA PARTNERS
Back

Key dates

Lodgement and payment deadlines for 2026–27.

Where a due date falls on a weekend it moves to the next business day, and we’ve shown the adjusted date. Clients on our tax agent list often have later due dates than those below.

Every month

Ongoing obligations
21st
Monthly BAS or IAS lodged and paid for the prior month
Monthly reporters
Each payday
Single Touch Payroll reported to the ATO on or before payment
Employers
7 business days
Super guarantee received by each employee’s fund within 7 business days of payday. Payday Super replaced quarterly super from 1 July 2026
Employers

Jul – Sep 2026

Year-end wrap up
Tue 14 Jul
STP finalisation declaration — income statements marked tax ready
Employers
Tue 21 Jul
June monthly BAS or IAS lodged and paid
Monthly reporters
Tue 21 Jul
Payroll tax annual reconciliation lodged and paid: Victoria, Queensland, Western Australia, Tasmania and the Northern Territory
Employers in those states
Tue 28 Jul
Q4 (Apr–Jun) BAS due if self-lodging; final quarterly super guarantee payment (June quarter) received by the fund
Business
Tue 28 Jul
Payroll tax annual reconciliation lodged and paid: NSW, South Australia and the ACT
Employers in those states
Fri 28 Aug
Taxable payments annual report (TPAR) for building, cleaning, courier, IT and security work; super guarantee charge statement if the June-quarter payment was missed
Contractors, employers

Oct – Dec 2026

The one most people miss
Wed 28 Oct
Q1 (Jul–Sep) BAS due if self-lodging
Business
Mon 2 Nov
Individual return due if you self-lodge — and the date by which you must be on an agent list to get the extension. 31 October falls on a Saturday, so the deadline moves to the Monday
Individuals
Wed 25 Nov
Q1 BAS due where lodged electronically through a registered agent
Agent-lodged
Tue 1 Dec
Income tax payable for large and medium companies
Companies

Jan – Jun 2027

Agent-lodged deadlines
Mon 1 Mar
Q2 (Oct–Dec) BAS due for all lodgers; first-year SMSF and new company returns. 28 February falls on a Sunday
Business, SMSF
Wed 31 Mar
Returns due for individuals and trusts with prior-year tax over $20,000
Agent-lodged
Wed 28 Apr
Q3 (Jan–Mar) BAS due if self-lodging
Business
Mon 17 May
The main agent deadline — most company, trust, partnership and individual returns. 15 May falls on a Saturday
Agent-lodged
Wed 26 May
Q3 BAS due where lodged electronically through a registered agent
Agent-lodged
Mon 7 Jun
Concessional date for returns with a nil or refund result. 5 June falls on a Saturday
Agent-lodged
Wed 30 Jun
Super contributions must be received by the fund to count in 2026–27
Everyone
Last reviewed November 2026

These are general dates, not advice on your own obligations. Deadlines can differ for agent-lodged returns, new registrations and ATO concessions, so check with us before relying on one.

TSIA PARTNERS
Suite 201, Level 2
309 Pitt Street, Sydney NSW 2000
general@tsiapartners.com.au
02 9267 6533
© 2026 Tsia Partners Pty Ltd · ABN 26 637 447 235 · Tax Agent 2604 5805 · ASIC Registered Agent 40908 · Liability limited by a scheme approved under Professional Standards Legislation
Call us
Registered Tax Agent 2604 5805 · Chartered Accountants ANZ · Sydney CBD
02 9267 6533
Tsia Partners
TSIA PARTNERS
Back

Advisers who know your affairs.

Chartered accountants and registered tax agents in Sydney CBD, advising individuals, families and businesses on tax, accounting and structure.

Who we work with

The software we work in

We work directly in your accounting file, in whichever package suits your business.

Xero MYOB Intuit QuickBooks BGL Paidnice
Tell us what you need.

A sale, a restructure, an ATO letter, or a decision you want checked before you make it. A few lines in your own words is enough.

Introductory call · 20 minutes · with a principal
In person at 309 Pitt Street or by phone, at a time you choose.
See available times
Or send it in writing and the principal will come back to you.
A principal reads every enquiry. Please don’t include tax file numbers or documents here.
Estimate your fee
Choose all that apply. Tap again to deselect.
1 — Who for · select any
2 — What you need · select any
IAS lodged
BAS lodged
Pay runs
Employees
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$15 per employee per lodgement, plus GST
3 — How complex
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A guide only, not a quote. Fees are ex GST and confirmed in writing once we’ve looked at your situation.
Narrow it down · optional

A little detail helps us quote accurately: the number of entities, any years outstanding, and the state of your records.

For initial enquiries only. Please don’t include tax file numbers or documents here.
By phone
02 9267 6533
Mon–Fri, 9:00am – 5:30pm. Calls come straight through to us.
Registered and accountable
Tax Practitioners Board Registered — Tax Agent 26045805 Chartered Accountants Australia and New Zealand
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Resources
Four free checklists of what to bring to your appointment, plus the year’s lodgement dates.
Open resources
Switching to us
We contact your current accountant for clearance and your prior-year records, so you don’t have to. Most transfers take about two weeks.

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Call 02 9267 6533

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What it does not include

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We can quote separately for anything excluded. We won’t do or bill work outside the agreed scope without your approval.

What we need from you

Sending these at the start is the best way to get the work done quickly. The checklists set them out in full.

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How it works

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Fees
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We quote a fixed fee in writing before work starts. Complex structures, catch-up years and multiple entities cost more, and we’ll tell you before we begin.

Related

Common questions

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More at the full FAQ.

Resources

What to gather before your appointment.

Four free checklists, no sign-up needed. Sending everything together means your return can be finished in days rather than weeks.

Checklists

Free · no email required
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Not sure which applies to you? — or see the key dates for when each is due.

Insights

Notes on common tax questions.

Written by our principal on questions clients ask us regularly. They are general information and don’t take your circumstances into account.

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General information only, current at the date shown above. It does not take your circumstances into account and is not a substitute for advice. If it applies to a decision you are about to make, .

Also worth reading

Industries

Tax and accounting issues by industry.

The industries we work with regularly, and the issues that tend to come up in each. If yours isn’t listed, get in touch. We likely work with it too.

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Fixed in writing before work starts.

Services involved

Worth reading for this industry

Services & fees

Published fees. Fixed before we start.

Every engagement is scoped and priced in writing. The fees below are starting points, and the estimator gives a closer figure for your situation. Advisory and structuring work varies too much to list, so we quote it per engagement.

How we help

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Everything, line by line

Service
Who it suits
From
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All fees ex GST. Monthly plans available on business engagements.
Free 20-minute review
Bring last year's return. We'll tell you what we'd have done differently.

Who we help

From a single return to a group of entities.

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Industries — pick yours
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About

A Sydney practice since 1974.

Tsia Partners is a Sydney chartered accounting and tax practice working with individuals and businesses across Australia. We handle the annual compliance work and advise on the decisions around it. We have kept the practice small so a principal stays responsible for your work.

Many clients have been with us for decades, through business sales, family changes and the occasional ATO review.

Our history

The practice began in 1974 as L K Tsia Chartered Accountants, founded by Loi Kah Tsia. Tsia Partners was formed in 2019 to continue that work, led by Jia Hao Tsia.

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Founder

Loi Kah Tsia

Known to clients as Tom
BComm, FCA, FCPA — Tax Agent and Registered Auditor

Tom was born in Sandakan, Sabah, in 1947. He grew up in Malaysia and came to Australia on his own to study. After qualifying as a Chartered Accountant he worked in other firms for several years, and in 1974, with the support of his wife, he opened his own practice, L K Tsia Chartered Accountants, in Sydney.

Over more than forty-five years he advised charities, unions and employer associations, manufacturers, family businesses and individuals. Many of those clients are still with the practice today.

He worked to three principles, and Tsia Partners still does:

Client first
Honesty
Responsibility

The firm is now led by Jia Hao Tsia.

The team

A small team who know your file.

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How we practise

The principles behind how we work.

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How an engagement runs

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Where our clients are

Our office is in the Sydney CBD, with clients across NSW and interstate. We work the same way wherever you are.

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The practice, on paper

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Contact

We usually reply the same day.

Office
Suite 201, Level 2, 309 Pitt Street
Sydney NSW 2000
Open in Google Maps →
Hours
Mon–Fri, 9:00am – 5:30pm
Phone
Sending us documents
Email them to the address above, or ask us for a private SharePoint folder. SharePoint is better for large files, a full year’s records, or anything with a TFN, bank details or ID. We’ll send the link the same day. Please never send a TFN by SMS.
Tell us what you need.

A sale, a restructure, an ATO letter, or a decision you want checked before you make it. Write it in your own words.

Introductory call · 20 minutes · with a principal
In person at 309 Pitt Street or by phone, at a time you choose.
See available times
Or send it in writing and the principal will come back to you.
A principal reads every enquiry. Please don’t include tax file numbers or documents here.
Estimate your fee
Choose all that apply. Tap again to deselect.
1 — Who for · select any
2 — What you need · select any
IAS lodged
BAS lodged
Pay runs
Employees
{{ staffN }}
$15 per employee per lodgement, plus GST
3 — How complex
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{{ estRange }}
{{ estSummary }}
{{ l.label }}{{ l.amt }}
A guide only, not a quote. Fees are ex GST and confirmed in writing once we’ve looked at your situation.
Narrow it down · optional

A little detail helps us quote accurately: the number of entities, any years outstanding, and the state of your records.

For initial enquiries only. Please don’t include tax file numbers or documents here.
Registered and accountable
Tax Practitioners Board Registered — Tax Agent 26045805 Chartered Accountants Australia and New Zealand
{{ c }}

Key dates

Lodgement and payment deadlines for 2026–27.

Where a due date falls on a weekend it moves to the next business day, and we’ve shown the adjusted date. Clients on our tax agent list often have later due dates than those below.

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These are general dates, not advice on your own obligations. Deadlines can differ for agent-lodged returns, new registrations and ATO concessions, so check with us before relying on one.

Questions

Common questions from new clients.

If your question isn’t here, call or email us.

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Legal

Disclaimer & Privacy Policy

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Legal

Terms & Conditions

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TSIA PARTNERS
Suite 201, Level 2
309 Pitt Street, Sydney NSW 2000
general@tsiapartners.com.au
02 9267 6533
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© 2026 Tsia Partners Pty Ltd · ABN 26 637 447 235 · Tax Agent 2604 5805 · ASIC Registered Agent 40908 · Liability limited by a scheme approved under Professional Standards Legislation
Disclaimer & Privacy Policy Terms & Conditions
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