At M Squared Tax, we aim to be the leading CPA firm in the Pacific Northwest, specializing in international tax for individuals and small businesses. With a team bringing a cumulative 150+ years of industry experience and deep expertise across borders, we provide exceptional, tailored service while fostering a supportive environment for both our clients and staff.
We left the billable-hour world behind. We measure our people by their strengths, not their timesheets, and protect family time as core to who we are.
Our clients deserve the highest level of attention. We respond quickly, optimize every tax situation, and hold ourselves accountable from beginning to end.
Tax law never stops changing, so neither do we. We invest in advanced research tools and translate the complexity into clear, actionable guidance.
Moses founded M Squared Tax PLLC the day his first child was born (you can ask him why later). It was a life-long dream to own and operate his own practice and he is grateful he gets to do this every day now for a living.
Prior to starting M Squared Tax, Moses worked at various CPA firms, from the Big 4 to local firms. He also did a brief stint as an assistant controller at a hedge fund and quickly realized it was not for him. Valuable experiences and connections were made during those years.
Moses enjoys taking on a practical and impactful approach to taxes. If you ask him, the most rewarding experience is being able to explain complexed tax laws so that a 6-year old can understand them.
Professional Stuff:
Moses has a love for the great outdoors. A trail run in a crisp morning in Central Oregon is probably the best form of therapy for him. In 2025, Moses Mans was honored by Forbes as one of America’s Top 200 CPAs, a distinction reserved for only the most accomplished professionals in public accounting. The selection process involved a rigorous nationwide review of hundreds of licensed CPAs and evaluated technical expertise, leadership, innovation, and community impact. This recognition underscores Moses’s commitment to excellence, trusted service and meaningful contribution to the profession.
Li Meng is a Certified Public Accountant licensed in the State of Washington with more than a decade of experience in public accounting. Since beginning her accounting career in 2012, Li has worked with individuals, families, and businesses on a wide range of tax and accounting matters, with a particular focus on tax planning and compliance.
Li earned her bachelor’s degree in accounting from University of Nebraska and later completed her master’s degree in accounting at Seattle University, where she met Moses, who was serving as an adjunct professor at the university at the time. Recognizing Li’s strong work ethic, technical skills, and dedication to client service, Moses invited her to join him professionally after graduation.
Tax has always been Li’s primary area of interest and expertise. She enjoys helping clients navigate complex tax situations, identify planning opportunities, and achieve greater confidence in their financial decisions. Known for her detail-oriented approach and commitment to personalized service, Li strives to build long-term relationships with clients by providing practical guidance and responsive support.
In addition to her professional career, Li is a devoted mother of two young children. Outside of the office, she enjoys spending quality time with her family, traveling, and experiencing different cultures and cuisines.
Andy is a life-long Washington resident, graduating from Newport High School, and receiving his Bachelor of Arts degree in Sociology from the University of Washington. After college, Andy worked for a local newspaper founded by his parents that serves the Vietnamese community of Washington. At the newspaper, Andy’s tasks ranged from being in charge of advertising, design and layout, operations, distribution, and accounting. Through his work at the newspaper, Andy gained valuable knowledge running a small business and helping others.
It was also through handling the newspaper’s accounting that sparked Andy’s interest to pursue the accounting profession. In 2018, Andy passed the CPA exam and received his CPA license.
After working at a small CPA firm in Seattle for two years, Andy joined M Squared Tax in 2020.
In his spare time, Andy enjoys travelling and experiencing new places and also loves being out on the golf course.
Julin, a licensed CPA holding a master’s degree in accounting from Seattle University, brings seven years of experience from local CPA firms to her role at M Squared Tax.
Julin was fortunate to connect with Moses through Li. Outside of her professional pursuits, Julin enjoys traveling and embracing adventurous challenges, including skydiving, paragliding, and riding roller coasters.
Doug has over 40 years of experience in taxation of expatriates and foreign nationals. He has lived in Singapore, London, New York and now calls Bend, Oregon his home.
Doug grew up in Seattle, graduated from the University of Oregon (B.S. Finance and M.B.A. Accounting) and is a licensed CPA in Oregon and New York.
He enjoys skiing, kayaking, collecting wine and chasing his two younger grandsons around.
Loan is the bookkeeper at M Squared Tax. She offers bookkeeping services to our Washington clients. She is an experienced accounting professional with a strong educational background, holding an MBA from Seattle University and a bachelor's degree in accounting from Winona State University. With over eight years of diverse experience in accounting, payroll, and tax services, Loan has successfully navigated roles in both corporate environments and CPA firms.
Proficient in various accounting software, known for attention to detail, and passionate about supporting small businesses in achieving their financial goals. If you are looking for a bookkeeper, Loan is the ideal candidate for the job.
Sadie is our Office Manager at M Squared Tax. She plays a vital role in ensuring smooth day-to-day operations and delivering exceptional client support. With an associate’s degree in liberal arts and a strong foundation in business management, Sadie brings a unique blend of organizational expertise, critical thinking, and interpersonal skills to her role.
Sadie’s dedication to excellence and her proactive approach makes her invaluable asset to the team. She takes pride in postering positive relationships and ensuring that every client interaction reflects the high standards of M Squared Tax.
Residing in picturesque city of Bend, Oregon, Sadie enjoys spending time outdoors with her husband, daughter and their beloved pit bull, Nala.
VanNess brings over a decade of hands-on experience in tax, audit, and valuation to M Squared Tax. He is passionate about walking clients through complexity with care and precision — cutting through the noise to uncover what truly matters to them.
Prior to M Squared, VanNess worked at the Big4 including PwC and KPMG, advising multinational corporations, closely held businesses, and individuals.
Credentials & Involvement:
Outside the numbers, he enjoys fishing and laughing all day with his kids—often over a chessboard. Along the way, he’s pursuing his next certification and apparently enjoying sharpening his technical edge almost as much as numbers.
Mo joined M Squared Tax PLLC with over 15 years in international personal, business, and state income taxes. To him, it is important that anyone he speaks to can effectively understand any complex topic he is trying to communicate to them.
Before working with M Squared, Mo worked at legal departments, wealth management, and public accounting with high net worth individuals for both inbound and outbound plannings.
Outside tax returns and the infinitely incongruous intricacies of the IRC, he enjoys going for runs in nature areas (paved paths only and no snakes!), trying out new restaurants, and playing video games where you’re running around in nature (and fighting giant snakes sometimes!).
Ignacio, or “Nacho”, as most people know him, is a Tax Manager who comes with eight years of Big Four experience in US individual, expatriate, and international tax matters. He is an IRS Enrolled Agent and recently earned his MBA from the Yale School of Management, further expanding his perspective on business strategy and leadership.
Originally from Argentina and now based in Houston, Texas, Nacho brings a global outlook to his work. Throughout his career, he has worked with clients and teams across multiple countries and jurisdictions, and has lived in Argentina, Venezuela, the United Arab Emirates, and the United States. He speaks Spanish, English, and Italian, and enjoys working with international clients navigating the complexities of US taxation.
Outside of work, Nacho is a big soccer fan (as any good Argentine would be), enjoys traveling and discovering new cultures, and is always on the lookout for great food.
Founder & CPA
Read full bio →Moses founded M Squared Tax PLLC the day his first child was born (you can ask him why later). It was a life-long dream to own and operate his own practice and he is grateful he gets to do this every day now for a living.
Prior to starting M Squared Tax, Moses worked at various CPA firms, from the Big 4 to local firms. He also did a brief stint as an assistant controller at a hedge fund and quickly realized it was not for him. Valuable experiences and connections were made during those years.
Moses enjoys taking on a practical and impactful approach to taxes. If you ask him, the most rewarding experience is being able to explain complex tax laws so that a 6-year old can understand them.
Professional
Moses has a love for the great outdoors. A trail run on a crisp morning in Central Oregon is probably the best form of therapy for him.
In 2025, Moses was honored by Forbes as one of America's Top 200 CPAs, a distinction reserved for only the most accomplished professionals in public accounting.
Tax Manager
Read full bio →Li Meng is a Certified Public Accountant licensed in the State of Washington with more than a decade of experience in public accounting. Since beginning her accounting career in 2012, Li has worked with individuals, families, and businesses on a wide range of tax and accounting matters, with a particular focus on tax planning and compliance.
Li earned her bachelor's degree in accounting from University of Nebraska and later completed her master's degree in accounting at Seattle University, where she met Moses, who was serving as an adjunct professor at the university at the time. Recognizing Li's strong work ethic, technical skills, and dedication to client service, Moses invited her to join him professionally after graduation.
Tax has always been Li's primary area of interest and expertise. She enjoys helping clients navigate complex tax situations, identify planning opportunities, and achieve greater confidence in their financial decisions. Known for her detail-oriented approach and commitment to personalized service, Li strives to build long-term relationships with clients by providing practical guidance and responsive support.
In addition to her professional career, Li is a devoted mother of two young children. Outside of the office, she enjoys spending quality time with her family, traveling, and experiencing different cultures and cuisines.
CPA
Read full bio →Andy is a life-long Washington resident, graduating from Newport High School, and receiving his Bachelor of Arts degree in Sociology from the University of Washington. After college, Andy worked for a local newspaper founded by his parents that serves the Vietnamese community of Washington. At the newspaper, Andy's tasks ranged from being in charge of advertising, design and layout, operations, distribution, and accounting. Through his work at the newspaper, Andy gained valuable knowledge running a small business and helping others.
It was also through handling the newspaper's accounting that sparked Andy's interest to pursue the accounting profession. In 2018, Andy passed the CPA exam and received his CPA license.
After working at a small CPA firm in Seattle for two years, Andy joined M Squared Tax in 2020.
In his spare time, Andy enjoys travelling and experiencing new places and also loves being out on the golf course.
CPA
Read full bio →Julin, a licensed CPA holding a master's degree in accounting from Seattle University, brings seven years of experience from local CPA firms to her role at M Squared Tax.
Julin was fortunate to connect with Moses through Li. Outside of her professional pursuits, Julin enjoys traveling and embracing adventurous challenges, including skydiving, paragliding, and riding roller coasters.
Senior International Tax Advisor
Read full bio →Doug has over 40 years of experience in taxation of expatriates and foreign nationals. He has lived in Singapore, London, New York and now calls Bend, Oregon his home.
Doug grew up in Seattle, graduated from the University of Oregon (B.S. Finance and M.B.A. Accounting) and is a licensed CPA in Oregon and New York.
He enjoys skiing, kayaking, collecting wine and chasing his two younger grandsons around.
Bookkeeper
Read full bio →Loan is the bookkeeper at M Squared Tax. She offers bookkeeping services to our Washington clients. She is an experienced accounting professional with a strong educational background, holding an MBA from Seattle University and a bachelor's degree in accounting from Winona State University. With over eight years of diverse experience in accounting, payroll, and tax services, Loan has successfully navigated roles in both corporate environments and CPA firms.
Proficient in various accounting software, known for attention to detail, and passionate about supporting small businesses in achieving their financial goals. If you are looking for a bookkeeper, Loan is the ideal candidate for the job.
International Tax Manager
Read full bio →VanNess brings over a decade of hands-on experience in tax, audit, and valuation to M Squared Tax. He is passionate about walking clients through complexity with care and precision, cutting through the noise to uncover what truly matters to them.
Prior to M Squared, VanNess worked at the Big Four including PwC and KPMG, advising multinational corporations, closely held businesses, and individuals.
Credentials & Involvement
Outside the numbers, he enjoys fishing and laughing all day with his kids, often over a chessboard. Along the way, he's pursuing his next certification and enjoying sharpening his technical edge almost as much as the numbers.
Tax Manager
Read full bio →Ignacio, or "Nacho" as most people know him, is a Tax Manager who comes with eight years of Big Four experience in US individual, expatriate, and international tax matters. He is an IRS Enrolled Agent and recently earned his MBA from the Yale School of Management, further expanding his perspective on business strategy and leadership.
Originally from Argentina and now based in Houston, Texas, Nacho brings a global outlook to his work. Throughout his career, he has worked with clients and teams across multiple countries and jurisdictions, and has lived in Argentina, Venezuela, the United Arab Emirates, and the United States. He speaks Spanish, English, and Italian, and enjoys working with international clients navigating the complexities of US taxation.
Outside of work, Nacho is a big soccer fan (as any good Argentine would be), enjoys traveling and discovering new cultures, and is always on the lookout for great food.
Office Manager
Read full bio →Sadie is our Office Manager at M Squared Tax. She plays a vital role in ensuring smooth day-to-day operations and delivering exceptional client support. With an associate's degree in liberal arts and a strong foundation in business management, Sadie brings a unique blend of organizational expertise, critical thinking, and interpersonal skills to her role.
Sadie's dedication to excellence and her proactive approach make her an invaluable asset to the team. She takes pride in fostering positive relationships and ensuring that every client interaction reflects the high standards of M Squared Tax.
Residing in the picturesque city of Bend, Oregon, Sadie enjoys spending time outdoors with her husband, daughter and their beloved pit bull, Nala.
International Tax Manager
Read full bio →Mo joined M Squared Tax PLLC with over 15 years in international personal, business, and state income taxes. To him, it is important that anyone he speaks to can effectively understand any complex topic he is trying to communicate to them.
Before working with M Squared, Mo worked at legal departments, wealth management, and public accounting with high net worth individuals for both inbound and outbound planning.
Outside tax returns and the infinitely incongruous intricacies of the IRC, he enjoys going for runs in nature areas (paved paths only and no snakes!), trying out new restaurants, and playing video games where you're running around in nature (and fighting giant snakes sometimes!).
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Book a free initial consultation. We'll learn about your situation and make sure we're the right fit.
We review your tax picture, identify any risks or opportunities, and put together a clear plan for moving forward.
We handle your compliance, keep you informed, and stay proactive throughout the year. Not just at tax time.
