Zamp

Zamp is a modern, fully managed sales tax compliance solution designed specifically for e-commerce and SaaS companies. Unlike traditional tax software that provides tools but requires users to manage the complexity themselves, Zamp offers an end-to-end experience by combining a real-time technology platform with a team of in-house sales tax experts, including SALT (State and Local Tax) attorneys. The solution is built to eliminate the manual burden of sales tax entirely, handling everything from initial nexus tracking and state registrations to rooftop-accurate calculations, reporting, and monthly filings. The platform operates on a "hands-off" philosophy for the customer. It integrates directly with major sales channels and financial systems like Shopify, Stripe, and QuickBooks Online to ingest transaction data in real time. Zamp's expert team then monitors economic and physical nexus thresholds, manages tax notices from states, and ensures that all filings are submitted accurately and on time. This proactive approach allows business owners and finance teams to reclaim significant hours each month, focusing on growth and revenue-generating activities rather than navigating the shifting landscape of 13,000+ US tax jurisdictions.

Zamp’s primary competitive advantage lies in its hybrid model of 'Software + Service,' which addresses the 'last mile' of tax compliance that software-only tools like TaxJar or Avalara often ignore. While competitors provide the calculator, Zamp provides the experts who actually file the returns and manage the account. This managed approach means Zamp takes ownership of the accuracy and the process, significantly reducing the liability and time commitment for the customer. A key differentiator is Zamp’s 'One Price' model. Most industry players charge separately for registrations, individual returns, and notice management, often leading to unpredictable monthly bills as a company scales. Zamp bundles all these services into a single, transparent fee with no overage charges. Additionally, Zamp’s onboarding process is 'done-for-you,' where their specialists handle the technical setup and historical data migration, whereas many competitors require a self-service implementation that can take weeks of engineering time. Zamp also excels in transparency and depth of research. Its tax engine is backed by a team of attorneys who provide detailed legal reasoning and source documentation for product taxability determinations. This level of audit-ready documentation is a major step up from the 'black box' calculations of traditional software. Furthermore, Zamp is uniquely focused on the US market, allowing it to provide hyper-specialized support for complex local 'home rule' jurisdictions (like those in Colorado and Alabama) that generalist global tax platforms often struggle to handle accurately.