We simplify cross-border tax.

Unbordered provides cross-border tax services to clients throughout North America.

We are not a full-service firm (see our services and FAQ pages for more information). Instead, we focus on our core competency – providing advisory and compliance services to individuals and businesses with Canadian/U.S. cross-border complications. Essentially, you qualify to be a client if your tax situation involves more than one country.

We aim to keep things simple for our clients, to work efficiently through streamlined processes and systems, and to offer great value and quality service. Our clients dread tax season a lot less.


Jeremy launched the firm in July 2014. Cross-border tax was a big part of our service mix from the start, but as the years passed it grew to become the heart of who we are – a firm dedicated to providing cross-border tax compliance and planning services.


Jeremy Bast, CPA, EA


Educated at the University of Toronto and Wilfrid Laurier University, Jeremy spent the first fifteen years of his career in the tax departments of Arthur Andersen, Grant Thornton and Bishop & Company. This period gave him a solid grounding in Canadian and U.S. compliance and planning.

Jeremy launched our firm in July 2014 to continue to focus on the thing he does best – providing cross-border tax services with a unique emphasis on responsiveness, quality and value.

In addition to his professional interests, Jeremy is passionate about being a catalyst for personal growth – both in his own life and in the lives of others. Outside the office, you’ll find him managing his rental properties, working out, and watching sports.

Darrell Crawshaw, CPA, EA


Darrell was educated at St. Mary’s University in Halifax where he graduated summa cum laude in 2005. He spent the first decade of his career at KPMG and Belliveau Veinotte, working in a variety of practice areas including audit, corporate valuations, and Canadian and U.S. tax compliance.

Intrigued by the challenge of navigating the complicated world of cross-border tax, Darrell joined Unbordered Tax in 2016 as a Senior Manager. At Unbordered Tax he found an opportunity to provide high value, high-quality cross-border tax services – a surprisingly neglected segment of the market. Over the last several years, he has been an integral piece to the firm’s growth and commitment to its clients.

Outside of the office, Darrell is a devoted dad committed to making memories with his young family through time spent playing sports, travelling, and engaging in other activities. He is also an Executive Director of the Mahone Bay Centre and volunteers his time with other local organizations.

Abigail Woodworth, CPA (CT)


Abigail obtained her undergraduate degree (Bachelor of Science in Business Administration, Concentration in Accounting) from the University of Connecticut. She began her career in the Audit & Assurance group of Deloitte in Connecticut and gained U.S. tax experience at a subsequent role at Intuit. Abigail joined Unbordered in January 2022. She is looking forward to applying and expanding on her base of U.S. tax knowledge in the North American context.

Outside of work, she enjoys exploring the beauty of the province of Nova Scotia and spends as much time as possible on our South Shore beaches and on the hiking trails of Cape Breton.

As a Canadian business with US Clients, the tax forms can be confusing. Darrell was quick and clear at communicating, from introduction to having the final product within 24 hours. We will use their services again!

Michael, Nova Scotia

I have been using Unbordered services for my business and personal (USA) taxes for several years and can’t say enough about how professional and responsive their team has been. Quality work and always looking out for your best interests! Thank you to Jeremy and the team at Unbordered for all their hard work!

Lori, Arizona

Great professional service. Jeremy was always quick to answer our questions and help guide us through the maze of US taxes.

Glenn, Red Rapids, New Brunswick