Sydney Services & Moving Here Accountants

The 8 Best Accountants in Sydney (2026)

Updated October 2026 · 8 picks

The best accounting firms in Sydney in 2026 include Pitcher Partners and William Buck for private clients and family businesses, HLB Mann Judd and Hall Chadwick for small and mid-sized businesses, and Deloitte and Grant Thornton for complex corporate and cross-border tax. RSM and Nexia suit growing companies.

How we chose

This is a shortlist of established accounting firms with a Sydney office, their own website and a clear focus — not a ranking. We mixed the Big Four and national firms with mid-tier practices that look after individuals, families and private businesses, and described each from what it says it does. Nobody paid to be included and there are no affiliate links.

Nothing here is tax or financial advice. In Australia only a registered tax agent can charge a fee to prepare your tax return, so check any firm or individual on the Tax Practitioners Board register before you hire them, and look for membership of CA ANZ, CPA Australia or the IPA. Financial advice (as opposed to tax) needs an Australian Financial Services licence, which you can check on ASIC's Financial Advisers Register.

Australia's tax year runs from 1 July to 30 June. If you lodge your own return it is due by 31 October; if you use a registered tax agent and are on their list before then, you usually get until the following year. Anyone moving to Sydney should apply for a Tax File Number (TFN) as soon as they arrive.

1. Pitcher Partners — CBD (Darling Park)

Self-described middle-market specialists with strong private-client and family-business practices.

Specialty Tax, audit, business advisory, family office, wealth managementBest for Private businesses, families and high-net-worth individuals

Pitcher Partners calls itself a middle-market specialist and is a member of the Baker Tilly international network. Alongside audit and business advisory, it has dedicated services for individuals and families — personal tax, investment advice, wealth management and a family office service.

It is a strong fit for owners of private businesses and families with more complex affairs (trusts, investment portfolios, succession planning) who want one firm for both business and personal tax.

Good to know: Family groups: ask about its family office service if you have several entities and investments.

Level 16, Tower 2, Darling Park, 201 Sussex Street, Sydney NSW 2000

Google Maps Website

2. William Buck — CBD (Goulburn Street)

A mid-tier firm across Australia and New Zealand focused on private businesses and their owners.

Specialty Tax, accounting, audit, business advisory, wealthBest for Small and mid-sized businesses, business owners and individuals

William Buck is an accounting and advisory firm with offices across Australia and New Zealand, including the Sydney CBD and Parramatta. It works mainly with private businesses and their owners on tax, accounting, audit, business advice and personal wealth.

It suits business owners who want a firm big enough to handle growth and audits, but still focused on owner-managed companies rather than listed giants.

Good to know: Its Parramatta office is the easier option if your business is in Western Sydney.

Level 29, 66 Goulburn Street, Sydney NSW 2000

Google Maps Website

3. HLB Mann Judd — Barangaroo (Shelley Street)

A well-established mid-tier firm for business owners, with a strong individual-tax practice.

Specialty Tax, business services, audit, corporate finance, wealth managementBest for Private businesses, professionals and individuals

HLB Mann Judd is a mid-tier accounting firm and part of the HLB international network, with its Sydney office on Shelley Street near Barangaroo and another in Wollongong. It covers business and personal tax, audit, corporate finance and wealth management.

It suits professionals and business owners who want partner access and personal tax help alongside their business work. Its international network helps if you have income or companies in more than one country.

Good to know: If you have overseas interests, ask whether an HLB member firm in that country can coordinate.

Level 5, 10 Shelley Street, Sydney NSW 2000

Google Maps Website

4. Hall Chadwick — CBD (Park Street)

A long-standing Sydney firm covering audit, tax and business advisory, plus insolvency.

Specialty Audit, tax, business advisory, insolvency and restructuringBest for Small and mid-sized businesses and their owners

Hall Chadwick is a national association of accounting firms with its Sydney office on Park Street in the CBD. It offers audit, tax and business advisory work, and is also well known for insolvency and business restructuring.

It suits small and mid-sized businesses that need an auditor or accountant who can also help in a downturn. Owners can use it for their personal tax as well.

Good to know: If your business is under financial pressure, ask for an early restructuring conversation — options narrow fast.

Level 40, 2 Park Street, Sydney NSW 2000

Google Maps Website

5. RSM Australia — CBD (Martin Place)

A large national firm with a wide regional footprint and a solid tax practice.

Specialty Audit, tax, consulting, restructuring, financial adviceBest for Growing businesses, not-for-profits and individuals

RSM is one of the largest accounting networks in the world, and in Australia it has an unusually wide footprint, with offices in cities and regional towns. Its Sydney office is at 1 Martin Place and covers audit, tax, consulting and restructuring.

It suits growing businesses, not-for-profits and individuals who want a national firm that still works with smaller clients. Its global network helps companies operating across borders.

Good to know: Moving to regional NSW later? RSM's regional offices make it easy to stay with the same firm.

Level 7, 1 Martin Place, Sydney NSW 2000

Google Maps Website

6. Nexia Australia — CBD (Market Street)

A mid-tier advisory, tax and audit firm with a sizeable Sydney partner group.

Specialty Business advisory, tax, audit, corporate advisoryBest for Private companies, start-ups and business owners

Nexia Australia is an advisory, tax and audit firm and part of the Nexia international network, with its Sydney office on Market Street. Its Sydney team covers business advisory, audit and assurance and corporate advisory.

It suits private companies and founders who want advice on growth, funding and tax under one roof, with access to an international network for overseas expansion.

Good to know: Start-ups: ask about R&D tax incentive claims, a common reason to engage a mid-tier firm.

Level 22, 2 Market Street, Sydney NSW 2000

Google Maps Website

7. Grant Thornton Australia — CBD (Grosvenor Place)

A large international firm for audit, tax and advisory, just below the Big Four.

Specialty Audit, tax, advisory, international taxBest for Mid-sized and large private companies, international businesses

Grant Thornton is a large international audit, tax and advisory network, and its Sydney office is in Grosvenor Place on George Street. It is a common choice for privately owned mid-sized companies and for overseas businesses setting up in Australia.

It suits companies that have outgrown a small practice but do not need a Big Four firm, and individuals with cross-border tax questions tied to a business.

Good to know: Setting up an Australian subsidiary? Ask its international tax team about structuring before you incorporate.

Grosvenor Place, Level 26, 225 George Street, Sydney NSW 2000

Google Maps Website

8. Deloitte Australia — Circular Quay

The Big Four firm headquartered at Quay Quarter Tower, for complex corporate and expatriate tax.

Specialty Audit, tax, global mobility, consulting, financial advisoryBest for Large companies, executives on international assignments

Deloitte is one of the Big Four professional services firms, and its Sydney office and Australian headquarters are in Quay Quarter Tower at Circular Quay. Its tax practice includes a global mobility team that handles the tax of people moving between countries for work.

It is mainly for large companies and their employees — if your employer is relocating you to Sydney, your tax return may well be prepared by a Big Four mobility team at the company's expense. Individuals with simple affairs will find smaller firms better value.

Good to know: On an employer relocation? Check whether your package includes Big Four tax preparation before hiring your own accountant.

Quay Quarter Tower, 50 Bridge Street, Sydney NSW 2000

Google Maps Website

Frequently asked questions

How much does an accountant cost in Sydney?

A simple individual tax return through a tax agent typically costs from around $150 to $400, more with rental properties, shares or foreign income. Small business work (BAS, company returns, bookkeeping oversight) is usually quoted as a monthly or annual fixed fee, and the larger firms bill senior advisers by the hour. Ask for a written engagement letter with the fee.

When is the tax return deadline in Australia?

The financial year ends on 30 June. If you lodge yourself, your individual return is due by 31 October. If you are on a registered tax agent's client list before 31 October, you usually get an extended deadline under the agent's lodgment program, often into the following year — another reason to engage an accountant early.

How do I check an accountant is registered?

Search the Tax Practitioners Board's public register for the person or firm: only registered tax agents and BAS agents can charge for tax and BAS services. Membership of Chartered Accountants Australia and New Zealand (CA ANZ), CPA Australia or the Institute of Public Accountants adds professional standards and continuing education.

I have just moved to Australia — what tax do I need to sort out?

Apply for a Tax File Number, work out whether you are an Australian tax resident (it depends on your circumstances, not just your visa), and tell your employer. Temporary residents are generally taxed only on Australian income, while residents are taxed on worldwide income. Superannuation is paid by your employer on top of salary. Americans also keep filing US returns — see our US expat tax accountants guide.

Do I need an accountant for a small business in Sydney?

Not legally, but most do. You will need an ABN, may need to register for GST once turnover reaches $75,000, and must lodge Business Activity Statements. An accountant helps choose the structure (sole trader, company or trust) and keeps you on the right side of the ATO.

1. Pitcher Partners — CBD (Darling Park)

2. William Buck — CBD (Goulburn Street)

3. HLB Mann Judd — Barangaroo (Shelley Street)

4. Hall Chadwick — CBD (Park Street)

5. RSM Australia — CBD (Martin Place)

6. Nexia Australia — CBD (Market Street)

7. Grant Thornton Australia — CBD (Grosvenor Place)

8. Deloitte Australia — Circular Quay

Frequently asked questions

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