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About Us

Meet YOUR team

Joe Filippelli, CPA, CA

Managing Partner
joe@filetax.ca

Joe is a seasoned Chartered Professional Accountant with over 20 years of experience in providing professional services. Joe’s expertise is in service small and medium sized businesses and providing them with services that allow them to focus on running and growing their business. He has over 15 years of client service experience at global accounting firms.
In addition to his professional pursuits, Joe serves on the Board of Directors for not-for-profit organizations contributing to areas in finance, risk and governance. His commitment to governance and community service underscores his dedication to making a positive impact in both the corporate and nonprofit sectors.
Joe obtained his CA (CPA) in 2009 and graduated with Honours from the Schulich School of Business at York University.
Joe is the proud father of three and is an avid soccer and baseball fan.

Jacek Sulimierski

Founder & Partner Emeritus
jms@filetax.ca

Jacek Sulimierski is the visionary founder of Taxtronix (originally J&L Sulimierski Income Tax), a firm he established in 1976 with a commitment to precision and innovation. A Professional Architect, Jacek transitioned into the world of taxation after recognizing that the field required a unique blend of structural discipline and creative problem-solving.
‍An Innovator in Canadian Taxation
‍Long before digital filing became the industry standard, Jacek was a pioneer in the computerization of tax services. In 1979, he led a team of programmers to develop proprietary software. By 1986, Taxtronix celebrated its first year of fully computerized tax returns, and by the early 90s, the firm became one of the first in Ontario to implement an approved E-file module. Under Jacek’s leadership, the firm has grown from a loca ltax office into a comprehensive accounting and financial consulting practice utilizinga full-suite of tailor made softwre.
‍Commitment to the Client
‍With nearly five decades of experience, Jacek has guided the firm through a 700% increase in clientele while maintaining a hands-onapproach. Today, he remains dedicated to finding the most effective approaches to serve over 5,000 individuals and businesses annually across the GTA.
Jacek continues to lead Taxtronix with the same spirit of innovation that sparked the firm’s inception in 1976.

YOUR TEAM MEMBERS

Alicja Krawiecka

Partner

Agnieszka Hadala

Senior Accountant

Natsuki Sato

Accountant

Ola Bladek

Accounting Associate

Kasia Grzebska

Office Administrator

Natalia Klosowska

Senior Accountant

Wioletta Belz

Senior Accountant

Magdalena Tekiela-Studzinska

Accounting Associate

Grazyna Lach

Accounting Associate

Natalia

Accounting Associate

Natalia Kawka

Accounting Associate

Natalia

Accounting Associate

Mike Wiszniewski

IT advisor

Taxtronix History

START UP

Period of Hand-Prepared Paper Returns 1976 - 1986

Taxtronix, originally known as J&L Sulimierski Income Tax, was founded in February 1976 by Mr. Jacek Sulimierski. While at Shakey’s Bar (across the street from the present Bloor office), while on a layoff from his employment as a Professional Architect, when Jacek made the monumental decision to chart a new path in tax preparation.

In the early years all tax returns were done by hand, which was difficult and tedious.
However, always the innovator, Mr. Sulimierski made attempts to use a computer for filing tax returns in 1979. Unfortunately, the computer software and hardware available at the time was very poor and limited. The early 1980's computer revolution helped to materialize this dream. In 1984 a group of five programmers under the direction of Mr. Fred Hung started working on the development of proprietary taxation software. Exactly two years later, in February of 1986, Taxtronix celebrated their first year of computerized tax returns. It was a tremendous success, especially since Taxtronix was selected by the Canada Revenue Agency as the only firm in the country to test the computer generated tax returns.

RAPID GROWTH

Period of Computerized Returns 1986 - 1993

During this time, Taxtronix was using its proprietary computer software (TaxPro), which resulted in rapid growth for the company. The software was designed to optimize all potential tax benefits for our clients. Taxtronix was also one of the first few firms in Canada to get its own E-file module approved and to have unprecedented business growth. From 1987 to 1992 Taxtronix noted a 700% increase in the number of clients.

DIVERSIFICATION & PROFESSIONAL DEVELOPMENT

Movement towards Bookkeeping and Accounting 1993 - 2002

From our expanded clientele came a strong demand for related services in the accounting field. Taxtronix began offering accounting, bookkeeping and payroll services. Upon expanding into these services, it was quickly discovered that the various needs of our clients in these areas where not being met. Because there were no adequate tools to produce results of the required quality, Taxtronix once again ventured into designing and producing its own software. This labor-intensive and expensive development process culminated in the wonderfully simple and efficient accounting software called GIFI. In 2001 the first workable version of GIFI came about. From then on GIFI was ready to handle all accounts from small-to medium-sized businesses in a more efficient and less expensive manner when compared to other accounting software.

PROFESSIONAL EXPERTISE & PAYROLL SPECIALIZATION

Software Development 2003 - 2025

During this period, the GIFI software had become an incredible asset for the company. It made accounting much more efficient, and was a beneficial tool for Taxtronix and its clients. Increased number of accounting commissions required expansion of GIFI and ultimate expertise in the corporate taxation area. In addition to accounting, many Taxtronix clients required payroll services. Taxtronix ventured into software development again to design its own payroll software system. PAYHELP is presently used by hundreds of Taxtronix clients and is available for small and medium sized businesses.

Year 51 and Beyond

As we celebrate our 50th anniversary we have invited in a new Partner, Joe Filippelli, CPA, to lead the organization into the future. The firm is a proud member of the Polish Community and grateful to our clients who has supported our growth to mutual benefit. We will continue to focus on providing exceptional customer service to our current and new clients alike. We are grateful to our outstanding team members current and past.

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