Zamp, a New York–based tax compliance startup, has launched its global sales tax operating system, Zamp OS, alongside $30 million in total funding. 

Investors 

The latest round was led by Acrew Capital, with participation from Thomson Reuters Ventures and several accounting firm partners. 

Acrew Capital is an early-stage venture capital firm that partners with exceptional founders to build category-defining companies across fintech, data & security, and applied AI. With over $1.7 billion in assets under management, Acrew takes a thesis-driven, team-first approach, working closely with founders from inception through key inflection points. The firm invests in early-stage startups at the seed and Series A stages. 

Zamp Use of Funds 

The company will use the funding to expand its globally integrated sales tax platform, enhance AI-driven compliance capabilities, and scale operations to meet growing demand from accounting firms. 

About Zamp 

Zamp is a tax technology company building a vertically integrated operating system for sales tax compliance. The company combines AI agents with tax professionals to manage the entire compliance lifecycle, filing, registration, taxability, notices, and data import—end-to-end across all 50 U.S. states and more than 100 countries. Its platform, Zamp OS, is designed to help accounting firms scale efficiently amid a shrinking talent pool, enabling them to provide fully managed compliance services without building internal infrastructure. 

Funding Details 

Company: Zamp, Inc. 

Raised: $30.0M 

Round: Unknown 

Funding Date: April 2026 

Lead Investor: Acrew Capital 

Additional Investors: Thomson Reuters Ventures, Accounting Firm Partners 

Company Website: https://zamp.com/  

Software Category: AI-powered Tax Compliance / Sales Tax Operating System 

Source: Zamp