Thatch Raises $108M at $1B Valuation to Transform Employer Health Insurance

San Francisco-based healthcare startup Thatch has raised $108 million at a $1 billion valuation, marking a major expansion for its model of giving employees greater control over how they spend employer-provided healthcare benefits.

The round was led by General Catalyst, Index Ventures and The General Partnership, with existing investor Andreessen Horowitz also participating. New investors joining the round include ADP Ventures, Paychex, Eli Lilly and Company, Scale Venture Partners, QuantumLight, SemperVirens, Quiet Capital and Avid Ventures.

The latest financing brings Thatch's total funding to nearly $193 million.

From Group Plans to Individual Choice

Founded in 2021 by Chris Ellis and Adam Stevenson, Thatch is building an alternative to traditional employer-sponsored group health insurance.

Instead of selecting one health plan for an entire workforce, employers provide employees with a fixed, tax-free monthly healthcare budget.

Employees can then use Thatch's marketplace to select health, dental and vision coverage based on their individual circumstances, including their doctors, medications and family needs.

Thatch's AI recommends plans based on these factors, helping employees navigate the available choices.

Any remaining eligible funds can be used for qualifying healthcare expenses through a Thatch debit card.

Growing Employer Adoption

Thatch's growth has accelerated significantly over the past year.

The company says its revenue has increased nearly sevenfold, while more than 5,000 employers now use its platform.

Its distribution partnerships with companies including ADP, Paychex, Gusto and QuickBooks are designed to allow employers to adopt the model without replacing their existing payroll infrastructure.

Thatch has also grown to approximately 200 employees.

A $1B Valuation

The new financing values Thatch at $1 billion.

The company previously raised a $40 million Series B in April 2025 at a reported valuation of $410 million. Including its earlier seed and Series A rounds, Thatch has now raised close to $193 million in total funding.

The latest round gives Thatch additional capital to expand its healthcare marketplace, technology and employer distribution network.

Regulatory Tailwinds

The funding arrives shortly after U.S. regulators renamed the Individual Coverage Health Reimbursement Arrangement, or ICHRA, as the "CHOICE Arrangement."

The underlying rules did not change, but the new terminology is intended to promote the healthcare benefits model around which Thatch has built its business.

More than 20,000 U.S. businesses now offer ICHRA or CHOICE Arrangements, covering more than 500,000 employees, according to the HRA Council data cited in the source.

At the same time, employer healthcare costs are projected to increase by more than 8% in 2027, according to the figures cited by Tech Funding News.

Building a Consumer-Oriented Healthcare Model

Thatch's broader strategy is to shift more healthcare purchasing decisions toward individual employees.

The company's platform combines employer-funded healthcare budgets, an insurance marketplace, AI-powered recommendations and payment infrastructure.

Its long-term vision extends beyond helping employees select insurance. The company sees AI agents potentially helping people navigate healthcare, including finding, booking and paying for appropriate care.

With a $1 billion valuation, more than 5,000 employer customers and revenue growing nearly sevenfold in a year, Thatch is now using its latest funding to expand this model across the U.S. healthcare benefits market.