Sales Tax for SaaS Startups: A State-by-State Nightmare (Simplified)

Sales tax compliance is one of the most overlooked areas for SaaS startups. The rules are complex, vary by state, and the penalties for non-compliance can be severe.

The Basics: Nexus

"Nexus" is the legal term for having a sufficient connection to a state that requires you to collect and remit sales tax. There are two types:

Physical Nexus

Having a physical presence in a state:

• Office or warehouse
• Employees working in the state
• Inventory stored in the state

Economic Nexus

Exceeding revenue or transaction thresholds in a state (post-Wayfair):

• Most states: $100,000 in revenue OR 200 transactions
• Some states have different thresholds
• Many states count gross revenue, not just taxable sales

SaaS Taxability by State

SaaS is taxed differently across states:

States That Tax SaaS

New York, Texas, Pennsylvania, Washington, Ohio, Connecticut, and many others

States That Don't Tax SaaS

California, Colorado, Florida (as of recent changes), Virginia, and others

It's Complicated

Several states have partial or conditional taxability based on:

• How the software is delivered
• Whether it's customized
• The type of customer (B2B vs. B2C)
• Whether it includes tangible personal property

Compliance Steps

1. Determine where you have nexus: Map your physical and economic connections
2. Identify taxability: For each nexus state, determine if SaaS is taxable
3. Register for permits: Apply for sales tax permits in applicable states
4. Configure your billing: Set up tax calculation in Stripe or your billing system
5. File returns: File returns in each state (monthly, quarterly, or annually)
6. Maintain records: Keep detailed records for audit purposes

Tools We Recommend

• Avalara: Enterprise-grade tax calculation and filing
• TaxJar: Great for mid-market SaaS companies
• Anrok: Built specifically for SaaS tax compliance
• Stripe Tax: Good starting point for early-stage companies

Common Mistakes

1. Ignoring sales tax entirely until you get a notice
2. Assuming SaaS isn't taxable because it's "not physical"
3. Collecting tax in your home state only
4. Not registering before you start collecting
5. Filing late and incurring penalties

How We Help

At Aleph, we handle sales tax analysis, registration, and ongoing compliance for our startup clients. We'll tell you exactly where you need to collect and set up automated processes to keep you compliant.