Nexus & registrations

Amazon remits sales tax for marketplace transactions, but FBA inventory may still create physical nexus in states where products are stored. If you also sell through Shopify, your website, or wholesale channels, you may have separate tax collection and filing responsibilities. See how Zamp supports end-to-end compliance.

Learn about Louisiana's $100,000 economic nexus threshold and how marketplace facilitator rules affect sales tax collection.

Kentucky offers one of the simplest sales tax systems with a flat statewide rate. Learn how to register, collect tax correctly, and maintain compliance.

Explore Kansas sales tax basics, including destination-based sourcing, taxable products and services, local tax rates, and ongoing filing responsibilities after registration.

Discover how Iowa's free sales tax permit process works, what documents to prepare, and how businesses can stay organized with consistent filing and reporting practices.

Stay compliant after registration by understanding filing frequencies, exemption certificate management, and accurate tax calculations across Illinois jurisdictions.

Idaho sales tax registration is straightforward, but maintaining compliance can become challenging as your business grows. Explore registration steps, compliance tips, and how Zamp helps finance teams stay organized and accurate.

Learn how to register for a Hawaii General Excise Tax (GET) license in 2026, including nexus thresholds, application steps, filing requirements, and ongoing compliance obligations for businesses.

Learn how Georgia's sales tax system works, including permit registration, taxability rules, local tax rates, filing schedules, and common mistakes to avoid.

Florida sales tax registration explained: from determining nexus to managing filings, collecting the correct rates, and avoiding penalties.

Explore Connecticut's tax treatment of SaaS, luxury goods, restaurant sales, and exempt products to ensure accurate tax collection.

Colorado sales tax registration explained, from economic nexus rules to local tax obligations and filing deadlines.

Understand California sales tax registration, local tax complexities, filing frequencies, and common compliance mistakes to avoid.

Learn how to register for an Arkansas sales tax permit in 2026, including nexus rules, permit fees, and ATAP registration requirements.

Understand Arizona's TPT license fees, city-specific costs, renewal requirements, and filing schedules.

Learn how to register for an Alabama sales tax permit in 2026, including nexus requirements, registration steps, and filing obligations.

When you’re expanding your business across state borders, you’ll likely encounter various obstaclesas you grapple with different tax rates and navigate through the registration...

Let’s get down to business and talk about sales tax. It can seem like a headache, especially if you’re running an online store and selling to customers across the country.

Data-driven analysis revealing how economic nexus complexity, threshold changes, and jurisdictional volatility are reshaping compliance requirements for growing businesses

Data-driven analysis of economic nexus thresholds, compliance requirements, and the jurisdictional complexity facing remote sellers after South Dakota v. Wayfair

Data-driven insights revealing the scale, complexity, and cost of sales tax registration—and why managed compliance is the answer

In most cases, US sellers selling tangible personal property must charge sales tax to buyers . However, there are exceptions, such as when a buyer purchases an item for resale.

Sales tax nexus is a connection between your business and a state that legally requires you to collect sales tax from buyers in that state. After the 2018 Supreme Court...

When a customer hands you a resale certificate claiming to be buying your products for resale, it can be tempting to take them at their word and simply sell them the products...

Physical and economic nexus determine when an out-of-state business must collect and remit sales tax. Physical sales tax nexus is triggered by presence or activity in a state...

Economic nexus monitoring isn’t just another compliance checkbox—it’s the foundation that determines whether your business stays compliant or faces thousands in penalties and...

Imagine getting hit with a $330 million tax bill because you didn’t know where your online sales triggered tax collection requirements. This nightmare scenario isn’t fiction—it...

In 2018, the Supreme Court ruled in favor of South Dakota in its case against Wayfair. This decision allowed states to require companies to collect sales tax based solely on...

Economic nexus is a sales tax connection between a business and a state established when the business exceeds specific revenue or transaction thresholds, typically $100,000 in...