Guideline logo

Guideline

Leader

Founded 2015; raised $356M; $1.15B valuation (2022); $120M ARR; $13B AUM; 50K+ business clients; acquired by Gusto ~$600M (Nov 2025).

Best for: 401k & Retirement PlansMarket leader
Financial Services401k & Retirement PlansWebsiteUpdated May 2026

Company Overview

About Guideline

Guideline is a technology-driven 401(k) plan provider founded in 2015 by Kevin Busque (co-founder of TaskRabbit), headquartered in San Mateo, CA. The company set out to democratize retirement savings by making professionally managed, low-cost 401(k) plans accessible to small and medium-sized businesses — a segment historically underserved by legacy providers like Fidelity and Vanguard due to high complexity and fees. Guideline's platform automates plan setup, payroll integration, compliance filing, and employee investment management, charging a transparent subscription fee ($49–$129/month plus $8/participant) and a low 0.08% annual AUM fee, compared to the industry-standard 1–2% charged by incumbents.

Business Model & Competitive Advantage

Guideline raised $356M across six funding rounds, including a $200M Series D in 2021 led by General Atlantic alongside Tiger Global and Generation Investment Management, which valued the company at $1.15B. By mid-2024, Guideline had reached $120M in ARR (up 35% year-over-year), $13B in assets under management (up ~55% YoY), and was serving 50,000+ employer clients covering more than one million employees. The company captured roughly 10% of all new 401(k) plans established in the U.S., making it one of the fastest-growing challengers in a $7.3 trillion retirement market.

Competitive Landscape 2025–2026

In August 2025, Gusto — the leading payroll and HR platform for SMBs — announced the acquisition of Guideline for approximately $600M, closing in November 2025. The combined offering is branded 'Gusto 401(k) powered by Guideline,' creating an integrated payroll-plus-retirement solution for small business owners. Guideline's competitive edge was its software-native UX, low-cost index fund portfolios (using 40 Vanguard funds), and seamless payroll integrations that reduced administrative friction to near zero.

Founded
2015
Headquarters
San Mateo, CA
Revenue
$120M
Curated content • Fact-checked and verified

Key Differentiators

Market Leader

Guideline is recognized as a market leader in the Financial Services sector, demonstrating strong industry presence and customer trust.

Growth Stage

Guideline has achieved $120M in revenue, demonstrating strong product-market fit.

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