Today, 401GO, a fully-owned 401(k) platform, announced $33 million in Series B funding. The round was led by Centana Growth Partners, with participation from existing investors: Next Frontier Capital, Rally Ventures, and Impression Ventures.

This Series B comes less than two years after 401GO’s $12M Series A fundraising round, underscoring continued investor conviction in the company’s fully in-house retirement infrastructure.

The investment will expand 401GO’s embedded partnerships with Human Capital Management providers, financial institutions, and financial advisors while scaling the company’s team, product offerings, and end-to-end technology.

Unlike providers that depend on legacy recordkeeping engines and third-party compliance tools, 401GO’s unified system delivers consistent payroll integrations and holistic service to partners, resulting in a more frictionless experience for plan sponsors.

"We believe the market is demanding reliable 401(k) solutions, not fragmented systems built on a mix of old vendors, which is the way other fintech providers have approached this challenge. We are now scaling our in-house technology to meet that demand across the entire partner ecosystem,” said Dan Beck, CEO and co-founder of 401GO. “This is why we believe we offer a compelling service at a price point others struggle to compete with; we own our platform while others rent theirs."

In leveraging its unique value to partners, 401GO has grown to serve over 5,000 customers, 50,000 participants, and manage more than $1B in assets, and is now the fastest-growing retirement provider in the U.S., according to data from 2024 and 2025 PlanSponsor surveys.

“At Centana, we invest in companies that we believe are reshaping essential financial infrastructure, and we believe 401GO has taken a differentiated approach to the wealthtech space with its integrated platform,” said Ben Cukier, Partner, Centana Growth Partners. “We’re excited to support Dan and the entire 401GO team."

The retirement market is expanding rapidly, driven by SECURE Act mandates and the rise of state programs, with total 401(k) plans greater than $5M in assets expected to rise to from 600,000 to over one million by 2029. This supports data from PlanSponsor Surveys that indicates small plans are leading the industry growth with a 17% annual rate since 2021, yet traditional platforms weren’t designed for the needs of this segment. 401GO’s approach is designed to respond to this new era of fast regulatory and market change.