Altair Group Named to 2025 Inc. 5000 List of America’s Fastest-Growing Private Companies
Bedford, New Hampshire (August 18, 2025) – Altair Group, a boutique tax, assurance and advisory firm, has been named to the annual Inc. 5000 list of America’s fastest-growing private companies. Altair Group ranked No. 4233, marking the firm’s first appearance on the list.
“Making the Inc. 5000 is a milestone that reflects the collective effort of our team,” said Pete Lachance, CPA, Managing Partner of Altair Group. “Our team’s expertise and passion have fueled our growth, strengthened our client relationships, and positioned us for even greater opportunities ahead. This honor reflects both their contributions and the culture we’ve built together.”
Since its founding in 2018, Altair Group has pursued a different kind of client experience—one that blends sophisticated technical expertise with clarity, accessibility, and a team-oriented culture. Clients often tell us we’re unlike any firm they’ve ever worked with, and this philosophy of doing things differently has powered our growth and earned us a place among the nation’s fastest-growing private companies.
“Making the Inc. 5000 is always a remarkable achievement, but earning a spot this year speaks volumes about a company’s tenacity and clarity of vision,” says Mike Hofman, editor-in-chief of Inc. “These businesses have thrived amid rising costs, shifting global dynamics, and constant change. They didn’t just weather the storm—they grew through it, and their stories are a powerful reminder that the entrepreneurial spirit is the engine of the U.S. economy.”
For the full list, company profiles, and a searchable database by industry and location, visit: www.inc.com/inc5000.
About Altair Group
Altair Group is a boutique tax, assurance and advisory firm specializing in the unique needs of high-net-worth individuals, fund and wealth managers, real estate professionals, technology companies, and commercial businesses. By pairing large-firm expertise with boutique-level service, we provide tailored strategies that reduce risk, minimize tax liabilities, and maximize enterprise value. Our services span federal and state tax compliance and planning, trust and estate tax planning, international compliance, financial statement assurance, and M&A transaction tax planning.
About Inc.
Inc. is the leading media brand and playbook for the entrepreneurs and business leaders shaping our future. Through its journalism, Inc. aims to inform, educate, and elevate the profile of its community: the risk-takers, the innovators, and the ultra-driven go-getters who are creating the future of business. Inc. is published by Mansueto Ventures LLC, along with fellow leading business publication Fast Company. For more information, visit www.inc.com.