Carta, Inc. vs Gusto (ZenPayroll, Inc.): Strategic Comparison

This in-depth comparison examines Carta, Inc. and Gusto (ZenPayroll, Inc.) across revenue, market value, business model, competitive positioning, and long-term growth strategy. Whether you are researching Carta, Inc. on its own, evaluating Gusto (ZenPayroll, Inc.), or weighing the two companies side by side, the breakdown below highlights where each company leads and where the gap between Carta, Inc. and Gusto (ZenPayroll, Inc.) is widest.

On the headline numbers, Carta, Inc. reports annual revenue of $300.0M against $500.0M for Gusto (ZenPayroll, Inc.), while their respective market capitalizations stand at N/A and N/A. Carta, Inc. is headquartered in United States and Gusto (ZenPayroll, Inc.) operates from United States, and those different home markets shape how each company competes.

Carta, Inc.: Carta, Inc. (formerly eShares) is the undisputed global market leader, category-defining pioneer, and foundational infrastructure standard of modern corporate capitalization table management, private market equity administration, and venture capital fund accounting. Founded in San Francisco in 2012 by software engineer Henry Ward and seed venture capitalist Manu Kumar (founder of K9 Ventures), Carta was created to eliminate the archaic paper stock certificates and fragile spreadsheets that paralyzed corporate finance. By building an immutable electronic equity ledger, automated IRS 409A valuations, venture fund administration, and total compensation benchmarking, Carta established the digital operating system of the innovation economy. Today, Carta generates over $350 million in annual recurring revenue ($350M+ ARR) at a $7.4 billion valuation, managing over $3.0 trillion in private company equity across 40,000+ companies and 2 million equity holders, alongside $130B+ in venture fund AUM under CEO Henry Ward.

Gusto (ZenPayroll, Inc.): Gusto, Inc. (formerly ZenPayroll) is the undisputed market leader, beloved brand standard, and category-defining pioneer of modern cloud-based payroll, employee benefits, and human resources for small and medium-sized businesses (SMBs) in the United States. Founded in 2011 by Stanford alumni Joshua Reeves, Tomer London, and Edward Kim, Gusto was established to restore human warmth, transparency, and technological modernism to an industry historically dominated by bureaucratic legacy monopolies (ADP, Paychex). Combining automated 50-state tax filings, health insurance brokerage, workers' compensation, and Gusto Embedded developer APIs, Gusto revolutionized how Main Street America operates. Today, Gusto generates over $500 million in annual recurring revenue ($500M+ ARR) with positive operating cash flows at a $9.5B-$10.0B valuation, serving over 300,000 small businesses and paying more than 3 million active American workers under CEO Joshua Reeves.

Carta, Inc. and Gusto (ZenPayroll, Inc.) pursue distinct approaches to generating revenue, and understanding how each company operates is the foundation of any fair comparison between Carta, Inc. and Gusto (ZenPayroll, Inc.).

Carta, Inc. business model: Carta operates an exceptionally high-compounding, multi-product software-as-a-service (SaaS) subscription and financial administration business model characterized by software gross margins exceeding 75% and industry-shattering enterprise customer retention. Its commercial revenue engine spans four core pillars: First, annual cap table management SaaS subscriptions priced on stakeholder tiers (ranging from $3,000/year for early-stage startups to over $50,000+/year for late-stage enterprise unicorns). Second, recurring 409A valuation software subscriptions providing continuous IRS-compliant fair market appraisals. Third, venture capital fund administration fees (recurring basis points on committed fund capital plus fixed administrative fees) managing over 7,000 venture funds and SPVs across $130B+ in AUM. Fourth, Carta Total Compensation modular SaaS licenses charging high-growth companies for live compensation market benchmarking data.

Gusto (ZenPayroll, Inc.) business model: Gusto operates a highly diversified, exceptionally profitable software-as-a-service (SaaS) and financial services business model characterized by software gross margins exceeding 75% and sustained customer lifetime value across small business cohorts. Its commercial revenue engine spans five core pillars: First, recurring monthly payroll subscriptions ($40 base fee + $6-$12/worker/month) across Simple, Plus, and Premium tiers. Second, licensed health insurance brokerage recurring commissions paid by major health carriers (Blue Cross Blue Shield, UnitedHealthcare, Aetna) for administering group medical, dental, and vision policies. Third, Gusto Embedded Payroll API fees charged to vertical SaaS platforms (Toast, ServiceTitan) and commercial banks (JPMorgan Chase). Fourth, workers' compensation and 401(k) retirement administration fees. Fifth, net interest income (float) earned on impounded payroll tax reserves held during settlement clearing windows.

The durability of a company's moat often decides long-term winners. Here is how the competitive advantages of Carta, Inc. stack up against those of Gusto (ZenPayroll, Inc.).

Carta, Inc. competitive advantage: Carta's competitive advantage is anchored in four insurmountable legal, technological, and ecosystem moats: First, immense private asset scale: managing over $3.0 trillion in private corporate equity across 40,000+ companies and 2 million equity holders. Second, dual-sided venture network effects: administering 7,000+ venture capital funds with $130B+ in AUM who mandate that their portfolio startups use Carta. Third, institutional legal integration: embedded as the default corporate registry across top global tech law firms (Cooley, Wilson Sonsini, Fenwick & West). Fourth, unshakeable customer trust: demonstrated when CEO Henry Ward decisively shut down the secondary liquidity brokerage in January 2024 within 48 hours to protect client confidentiality.

Gusto (ZenPayroll, Inc.) competitive advantage: Gusto's competitive advantage is anchored in four insurmountable brand, technological, and ecosystem moats: First, beloved small business brand loyalty: recognized as the compassionate, human-centric champion of 300,000+ businesses with Net Promoter Scores (NPS) exceeding 70, dislodging hostile legacy providers (ADP, Paychex). Second, automated 50-state municipal tax engine: calculating, withholding, and remitting taxes electronically across more than 3,000 local municipal jurisdictions with 100% accuracy guarantees. Third, Gusto Embedded Payroll API infrastructure: partnering with JPMorgan Chase and leading vertical software providers to embed white-label payroll, capturing hundreds of thousands of accounts at zero CAC. Fourth, licensed digital benefits brokerage integration: bundling small-group health insurance and pay-as-you-go workers' compensation directly into automated payroll deductions.

Future prospects matter as much as current results. The growth strategies below explain how Carta, Inc. and Gusto (ZenPayroll, Inc.) each plan to expand from here.

Carta, Inc. growth strategy: Carta's multi-year corporate expansion strategy focuses on four massive commercial growth pillars: First, scaling Venture Capital and Private Equity Fund Administration globally, expanding into European and Asian venture hubs with localized multi-currency LP accounting. Second, expanding Carta Total Compensation into a comprehensive enterprise workforce planning and talent retention suite. Third, expanding public company equity management, providing IPO-ready capitalization table transitions for late-stage unicorns listing on the NYSE and Nasdaq. Fourth, executing a landmark Initial Public Offering on Wall Street, establishing Carta as the permanent sovereign ownership ledger of global private and public enterprise. Carta is actively expanding its specialized enterprise governance and corporate secretarial solutions for pre-IPO unicorns. Through Carta Board Suite and Electronic Consents, corporate legal teams and boards of directors can draft, review, and execute formal written consents and board resolutions directly linked to live cap table changes, creating an immutable legal paper trail that eliminates corporate governance discrepancies ahead of public stock exchange listings.

Gusto (ZenPayroll, Inc.) growth strategy: Gusto's multi-year corporate expansion strategy focuses on four massive commercial growth pillars: First, scaling Gusto Embedded Payroll across national commercial banks, accounting software suites, and vertical industry software platforms. Second, expanding Gusto Wallet and consumer employee financial services, providing earned wage access, automated savings vaults, and credit-building tools for over 3 million working Americans. Third, expanding specialized HR compliance and performance management tools for growing mid-market enterprises with 50 to 500 employees. Fourth, executing a landmark initial public offering on the New York Stock Exchange, cementing Gusto as the permanent financial backbone of Main Street America. Gusto is actively expanding its specialized payroll and benefits solutions for non-profit organizations, educational foundations, and community civic institutions across America. Through Gusto for Non-Profits, Gusto provides discounted software pricing, automated Form 990 payroll reporting, and specialized volunteer hour tracking, deepening its presence as the trusted social fabric of civic and community organizations nationwide.

A closer look at the financial trajectory of Carta, Inc. and Gusto (ZenPayroll, Inc.) rounds out the comparison.

Carta, Inc.: Carta represents one of the most operationally enduring, network-dense financial compounding growth narratives in modern enterprise fintech. Founded in 2012, the company grew ARR from $25 million in 2017 to $100 million in 2019 at a $1.7 billion valuation led by a16z, and reached a $7.4 billion valuation following its $500 million Series G led by Silver Lake in 2021. In 2026, Carta achieved an annualized revenue run-rate exceeding $350 million ($350M+ ARR) with strong software gross margins, managing over $3.0 trillion in private corporate equity across 40,000+ companies and administering $130B+ in venture fund AUM, holding a fortress balance sheet ahead of its landmark initial public offering.

Gusto (ZenPayroll, Inc.): Gusto represents one of the most capital-efficient, disciplined, and enduring financial growth narratives in modern enterprise software. Founded in 2011, the company grew annual recurring revenue from $5 million in 2014 to $100 million in 2018, crossed $250 million in 2021 at a $9.5 billion valuation, and surpassed an annualized revenue run-rate exceeding $500 million ($500M+ ARR) in 2026 with positive operating cash flows. Capitalized with over $700 million in equity financing from premier institutions including T. Rowe Price, Fidelity, Franklin Templeton, General Catalyst, and CapitalG, Gusto maintains an unshakeable fortress balance sheet, preparing for a landmark initial public offering on Wall Street.