What our clients say

Reputation and Results

Our reputation speaks for itself with more than a decade of 5-star reviews from happy clients, which reflects the remarkable results we help them achieve. Our high retention rates testify to trust, reliability, and service. Building long-lasting relationships is our priority, as we consistently go above and beyond to deliver outstanding results. Our dedicated team is committed to ensuring our clients’ success remains at the heart of everything we do.

Perfect for all our accounting needs, advice and support.

Katia places customer satisfaction at the top of her agenda, backed with all the knowledge you could ever need to know for starting or running business accounts.


Consultant, Requal Management Solutions

Sudoku doesn’t skip a beat.

She has been our honest and competent bookkeeper since 2009.

Katia keeps us up-to-date with the ATO and works well with our accountant ensuring we can focus on more important things, like running the business.


Chiro Principal, Dulwich Hill

Sudoku is absolutely the best!

Super efficient, very clever, exceptional service and knowledge.

Thank you for keeping my business accounts in order.


Director, Bouchra Auctions

Katia was very patient and spent time making sure I understood everything. She is passionate about what she does and enjoys sharing her knowledge.

Yvette Facchini

Doing our books for years. Very happy with the service.
Katia gives excellent advice and is always there when we need her.
Honest, consistent and compliant.
Can’t ask for much more than that.

Voula Luis

Highly Recommend this firm of Book-keepers. Knowledgeable and they go far and above, especially with new legislation. Before and during Jobkeeper, their assistance, support, communication and information was invaluable. I truly would have struggled to get Jobkeeper for my staff without ther invaluable assistance.

George Bright

Been our business bookkeeper for over 8 years. Kept our books in check and our business running without a hiccup. Recommend to anyone!

Charbel C

Director, Bouchra Auctions

students OF SUDOKU Bookkeeping

We train business owners, accounting students and employees in mastering bookkeeping and accounting software skills.



Katia is an effective teacher.

She explains clearly, supporting students as they progress at different rates. She also offers frank, considerate feedback. I highly recommend learning opportunities delivered by Katia.



Katia is a wonderful trainer and mentor.

Her sessions are not only focused on the theoretical aspects of the subject but also its practical significance and applications.

The amount of knowledge, experience and professional skill sets that she imparts are insightful and helpful. Her high quality training on MYOB platform for AR/AP and Payroll has helped me develop the correct attitude and skill set that an accounting professional requires.

I highly recommend her workshops and training.



Blessed to be her student.

Katia is a great trainer. I have done MYOB And PAYROLL Courses from her. She has thorough knowledge of them and she taught not only the theory part of these topics, but also took efforts to give us complete practical knowledge too. 

She has great knowledge of MYOB, payroll + accounting platforms.

I am blessed to be her student and looking forward to learn more from her.



Experienced, highly efficient trainer.

Katia is very proficient in her training skills + abilities.

Her sound knowledge of MYOB gave me an opportunity of great learning experience to perform well in the course.

Katia’s excellent guidance + consistent support throughout the course helped me accomplish my projects & submit my assignments successfully on time.

Her effective coordination with the students throughout the course helps to bring out our full potential.



Calm demeanour and friendly nature.

Coming from an engineering background and having no knowledge of bookkeeping or accounting, I always dreaded learning anything remotely related to accounting. 

But after having difficulty understanding accounts at work, I attended MYOB Accounts Payables and Accounts Receivables course that is run by Katia.

Her teaching style is suitable for anyone no matter their background or their knowledge level. 

She took out all the complexity and made bookkeeping very easy to understand, and explained the concepts with real life examples.



Katia is friendly and her training is very professional + organised.

She is very knowledgeable in bookkeeping and accounting software and delivers her teaching skills with utmost passion and sincerity. 

Thank you  for imparting great knowledge to your students. We have definitely benefitted from it.

Hats off to your hardwork and dedication, Katia. You have been an inspiration to us. We share lovely memories. 



Katia is an efficient trainer.

Katia not only focused on theory but also on practical uses. She explains in a way anyone without basics can understand easily.

Her quality training on MYOB platform helped me develop the skills that an accounting professional require for accounts payable, receivable + payroll.

After completing her training I got a chance to work as a volunteer. I highly recommend her workshops and training.

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