Mainstreet Acquires Capbase to Build the First Small Business Operating System

Acquisition strengthens Mainstreet's platform with entity formation, equity, and corporate governance tools for early-stage founders and small business owners

SAN FRANCISCO, Oct. 1, 2025 /PRNewswire/ -- Mainstreet today announced the acquisition of Capbase, a leading platform for entity formation, equity, cap tables, and corporate governance. The move marks a major step in Mainstreet's mission to create the first true founder and small business operating system — an integrated platform giving entrepreneurs the tools, technology, and transparency to run their companies from day one through exit.

"Founders shouldn't need to be CFOs, lawyers, and compliance officers on top of building their business," said Jesse Tinsley, co-founder and chairman of Mainstreet. "Capbase has already transformed how startups handle equity and governance. Together, we're helping founders and entrepreneurs get out of the paperwork and get back to doing what they actually signed up for: building great companies."

Founded by entrepreneurs for entrepreneurs, Capbase streamlines one of the most complex parts of starting and scaling a company: formation, issuing shares, onboarding investors, staying compliant, and managing cap tables. By bringing Capbase into the Mainstreet ecosystem, the company aims to scale and expand the product, making it more intuitive, integrated, and powerful for founders worldwide.

With Capbase as a foundational layer, Mainstreet's single platform now enables founders to manage:

• Company formation
• Cap tables and equity
• Hiring and onboarding (W-2 and 1099)
• Payroll and benefits
• Bookkeeping and tax credits
• Banking and spend management

The acquisition also establishes a new partnership with Deel. Going forward, the two companies will work together as preferred partners, combining their strengths to better support businesses with hiring, compliance, and company formation needs.

"This is more than just an acquisition. It's the start of a new partnership," said Franck Neron-Bancel, Executive Vice President of Corporate Development at Deel. "By aligning Deel with Mainstreet, we're creating a more seamless experience for entrepreneurs and helping founders focus on building their global businesses."

About Mainstreet
With a growing portfolio of category-leading platforms - including Bench Accounting, Mainstreet Tax Credits, Recruiter.com, BountyJobs and more - Mainstreet delivers a unified suite of solutions to power the back office operations behind America's small businesses.

By streamlining essential functions like payroll, accounting, tax credit research, entity formation and vendor management, Mainstreet enables entrepreneurs and small business owners to spend less time on back office administration and more time building their businesses.

Visit www.Mainstreet to learn more.

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SOURCE Mainstreet