Expert Tax Accountants
& Bookkeeping

Our qualified tax agents and accountants in Blacktown,

Camden, Illawarra, the Southern Highlands, and Sydney, NSW,

provide bookkeeping and accounting services that are

accurate, clear, and focused on growth.

Our Offices:

Sydney
Camden
Blacktown
Illawarra
Southern Highlands

Our Business Grows Stronger Through Smart Tax Acquisitions

W Advisory has built up its network by buying and merging trusted local businesses, bringing together decades of experience under one brand. This gives our clients access to a broader range of accounting and bookkeeping services, financial planning, and business advice, all in one place.

By partnering with established firms, we strengthen our expertise while maintaining the personal service clients value. Each acquisition is carefully chosen to align with our standards, ensuring continuity, trust, and improved outcomes. This approach allows us to scale efficiently while delivering consistent, high-quality financial solutions tailored to evolving client needs.

What Services We Offer

We don’t just check things off a list.
We fix problems before they cost you money.

Bookkeeping

Stay Organised. Stay focused. Stay in control.

Our bookkeeping and accounting services are correct, follow ATO rules, and are made for business owners and professionals. We carefully keep track of your books, payroll, BAS, and cash flow so that you can grow with confidence.

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Tax Advisory

Innovative strategies, simplified.

Our tax agents in Blacktown make tax plans that are proactive and compliant, which means they legally lower your tax bill and help you get your finances in order. We make plans that work for your business, whether it’s a company, a trust, or a sole trader.

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Tax Returns

Fast, accurate, and stress-free.

We quickly file tax returns for both people and businesses, and we make sure they follow all of Australia’s tax laws. Our Blacktown, NSW accountants file your returns on time, so you get the most money back and don’t have to worry about penalties.

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Tax Minimising Strategies

Proactive planning. Zero last-minute scrambles.

By doing proactive analysis, we find legal ways to lower your tax bill. With clear, honest advice from a financial advisor, our experts use tried-and-true methods to keep your business lean and financially sound.

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Tax Compliance

Stay fully compliant with Australian tax regulations.

Our team makes sure you follow all the ATO rules, from BAS and IAS to payroll and superannuation. We take care of the details so you can focus on your business.

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Our Story

In 2012, William Wong started W Advisory. Since then, it has grown from a small business to one of the most trusted tax and accounting firms in Blacktown, New South Wales. What started as a dream to provide honest, client-centred tax solutions has turned into a network of skilled tax agents and accountants in Blacktown, Narellan, and all over New South Wales who give excellent service in every case.

Over the years, we’ve grown by making smart purchases and adding specialised teams and systems that help our clients get better results. This growth has made it easier for us to provide tax planning, compliance, financial structuring and accounting and bookkeeping services all in one expert-driven way.

A Chartered Accountant and Registered Tax Agent in Blacktown at W Advisory helps every client keep their business in line with the law and ready for the future. Our team has a lot of experience with business taxes, investment structures, wealth management, and strategic planning, so we are the best choice for reliable accounting and financial advice in Western Sydney and beyond.

We are proud to be a trusted accountant in Blacktown and Narellan, NSW, where we use our deep knowledge of finance to help people. Our goal is the same whether you’re a business owner trying to get the best tax situation or an individual looking for better financial advice: to help you build lasting success, security, and generational wealth through precise and proactive advice.

Access to a Trusted
Specialist Network

We work with experts to find
solutions to tough problems
through our partnerships with:

Business Strategists
Buyers’ Agents
Lawyers
Marketing Experts
Financial Planners
SMSF Specialists

Trusted by Professionals, Startups, and National Brands Since 2012

Why Choose Us

20+ Years of Proven Expertise

Our senior staff have decades of experience providing tax and accounting services in Blacktown, NSW that are accurate, compliant, and ready for the future.

Financial Solutions for the Whole Business

We offer both accounting and bookkeeping services as well as wealth and tax planning. This helps you balance your business goals with your personal financial goals.

Five Offices, One Team

You can get help from people in Blacktown, Narellan, Camden, Illawarra, and the Southern Highlands, as well as from experts in the central office.

Tax Structuring That Works

Our minimised tax strategies are legal, well-researched, and lower risk while improving long-term financial performance.

We Fix What Others Get Wrong

A lot of people come to us after getting bad advice or making mistakes with their lodgings. We fix problems, make sure your finances are in order, and make sure they will be in the future.

Highly Responsive, No-Nonsense Service

People know us for our quick responses, clear communication, and real results. We don’t use jargon or add stress; we give you accurate advice from professionals you can trust.

Frequently Asked Questions About Our Accounting Services

1. Why should I hire an accountant in Blacktown, New South Wales?

Getting help from a tax agent in Blacktown gives you direct access to experts who know the rules for businesses in your area, what the ATO expects, and the industries that are important there. This means you will get more accurate and helpful advice.

2. Do you offer both bookkeeping and tax services?

Yes, our combined accounting and bookkeeping services make sure that your daily records, BAS lodgements, and annual returns are all the same.

3. Are your accountants licensed and trained?

Definitely, our accountants in Blacktown, NSW, and Narellan, NSW, are all fully registered with CPA Australia and the Tax Practitioners Board.

4. What kinds of businesses do you work with?

We help professionals, tradespeople, small and medium-sized businesses, and people with high incomes who need reliable accounting and tax planning advice.

5. What do I need to do to start using W Advisory?

Just set up a free consultation with one of our tax agents in Blacktown. We’ll look over your current setup, find any problems, and come up with a plan that fits your financial goals.

What Clients Say

Review us on Google

      EXCELLENT  
   Based on 66 reviews 
    
 
 
 
   
 
 
      Posted on Google  
   
   Amrit Singh 
 
 
 
 Trustindex verifies that the original source of the review is Google. William was very helpful in providing all the required information and links. He is very solution oriented and resourceful. I greatly appreciate his professionalism.
  
 
     Posted on Google  
   
   Paul Halford 
 
 
 
 Trustindex verifies that the original source of the review is Google. We are a mortgage broking company and W Advisory supported us extremely quickly when needing some support for one of their past clients that had stopped trading 2 years ago and moved to QLD. Cheryl was very supportive when it would have been easy for her to say no - thank you Cheryl!
  
 
     Posted on Google  
   
   Kyia Kuiper 
 
 
 
 Trustindex verifies that the original source of the review is Google. Amazing team, always happy to help with any questions myself or my husband have regarding our company tax, personal tax, always professional, highly recommend the team at W Advisory!
  
 
     Posted on Google  
   
   Peter Rocke 
 
 
 
 Trustindex verifies that the original source of the review is Google. I’ve known Will for over 10 years and can honestly say he and the team at W Advisory are the real deal. They helped us under serious time pressure, got everything done accurately and on time, and made the whole process easy. They’re professional, responsive, and genuinely care about getting the best outcome for their clients. I’ll be using them for both business and personal accounting going forward. Highly recommend.
  
 
     Posted on Google  
   
   Jodie Taylor 
 
 
 
 Trustindex verifies that the original source of the review is Google. William was very professional and knowledgeable. Easily and quickly helped me with my situation. Great communication throughout process.
  
 
     Posted on Google  
   
   Gerard Mace 
 
 
 
 Trustindex verifies that the original source of the review is Google. I Found W Advisory was very professional. Spoke to William who very knowlegable,and I was very impressed with advise and expertise.
  
 
     Posted on Google  
   
   Miss Kavouras 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very knowledgeable and helpful staff!
  
 
     Posted on Google  
   
   Emma Ryan 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great company services and staff- W advisory has become and extension of our business, both their services and knowledge as well as customizing systems and processes to work in with our operations has become extremely valuable to our business. After a number of different accountancy firms we finally found the right fit, that has your best interests at hand and well positioned price wise for the services they provide. We are extremely grateful for the recommendation by another business owner and friend, wish we had found them sooner. We would highly recommend the W advisory team for any business for personal accountancy matters.
  
 
     Posted on Google  
   
   Phil Stapley 
 
 
 
 Trustindex verifies that the original source of the review is Google. I was referred to William at W Advisory following a long standing association with my previous accountant upon his retirement and I have to say that I couldn't be happier with the welcoming, friendly and professional service that I received, that along with a great result in my tax return. I highly recommend W Advisory to the local and greater Blacktown area.
  
 
     Posted on Google  
   
   nick godwin 
 
 
 
 Trustindex verifies that the original source of the review is Google. William was a great help and very knowledgeable with tax and business in general.

Expert Tax Accountants
& Bookkeeping