Resources

Explore our in-depth articles and resources on all aspects of sales tax, crafted by industry experts to provide you with the insights and guidance you need. From fundamental principles to complex scenarios, our content covers every angle, helping you navigate the nuances of sales tax confidently.

Last updated:

January 1, 2025

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Sales Tax

How Long Does Trailing Nexus Last and Why Does It Matter?

Learn how trailing nexus can extend your sales tax obligations even after you stop doing business in a state.

Sales Tax

When Did Sales Tax Start in the U.S.?

Today, most states (and many cities and counties) levy sales tax — and more businesses than ever must collect and remit sales tax, thanks to regulations that make online, out-of-state sales taxable. But it wasn't always this way.

Sales Tax

Ecommerce Sales Tax 101: An Online Seller’s Guide to 2025

As your business grows and gains customers in multiple states (and countries), it also takes on new responsibilities related to complying with the tax laws where those customers are located, even if your business has no physical presence there.

Sales Tax

Marketplace Facilitator Laws 101: State By State (2025)

Your 2025 guide to marketplace facilitator laws, state by state. Find out where and how online sales tax rules apply.

SaaS

Is SaaS Taxable in Alabama in 2025?

No. Alabama does not classify software as a service (SaaS) as tangible personal property, unless it has a downloadable or physical component. This means that most SaaS offerings are not subject to sales and use tax in the state.