Meet the Team.

Steven Tsimopoulos

Chief Executive Officer & Accountant

Yianni Tsimopoulos

Managing Director & Accountant

James Tsimopoulos

Director & Mortgage Broker

Vessy Tsimopoulos

Office Manager

Mark Videon

Client Services Manager

Could this be you?

with your awesome title?

Our Mission

Our Mission

We help our clients identify their business and financial needs.

Nationwide Accountants & Advisers first started as Steven Tsimopoulos & Assocaites, the child of Steve Tsimopoulos, our CEO — It then morphed into what it is today, and while our tax returns start from just $60, that’s only the beginning of the wonderful journey we can take you on.

Our goal is to be South Australia’s best financial office for families and their businesses. Our office is conveniently located in Mawson Lakes, however we service clients all over Australia.

Our awesome partners.

Our Values.

Success has nothing to do with luck. It has everything to do with being properly prepared and informed. Leave nothing to chance.

Nationwide believes that wealth gives us more choice about the way we want to live. To create and protect wealth doesn’t happen by chance – It is the result of receiving good financial advice. That’s where we come in.

Customer first

You’re first. Always.


We love what we do.


Honesty and transparency are one of the most important values.


We strive to deliver excellence in all our work.

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