Maryland Sales Tax Nexus Checker — 2026

The Maryland economic nexus threshold is $100,000 in revenue or 200 transactions measured over the previous or current calendar year. Once you cross this threshold, you must register with Maryland, collect Maryland sales tax on all taxable sales, and file regular returns. Marketplace sales through Amazon, Etsy, and similar platforms count toward the $100,000 threshold.

Maryland Sales Tax Nexus — Frequently Asked Questions

What is the sales tax nexus threshold in Maryland?

The economic nexus threshold in Maryland is $100,000 in sales revenue or 200 transactions in the previous or current calendar year. Meeting either threshold — revenue or transaction count — requires you to register and collect Maryland sales tax.

How does Maryland measure the economic nexus period?

Maryland uses the previous or current calendar year as its measurement window. This means if you exceed $100,000 at any point during the current calendar year, you have nexus immediately — you do not need to wait until the following year to register. Monitor your Maryland revenue in real time.

Does Maryland include marketplace sales in the nexus threshold?

Yes. Maryland includes marketplace sales in its economic nexus threshold calculation. Sales you make through Amazon, Etsy, or other marketplace facilitators count toward the $100,000 threshold alongside your direct-channel sales.

How do I register for sales tax in Maryland?

Register online at Maryland's official tax portal: https://www.marylandtaxes.gov/. Have your federal EIN, business legal name, mailing address, and anticipated first taxable sale date ready. Most states complete registration instantly and issue a permit number you can use immediately.

What happens after I exceed the Maryland nexus threshold?

Once you meet the Maryland economic nexus threshold, you must register, collect the correct Maryland sales tax rate on all taxable sales, file regular returns (frequency depends on your sales volume — monthly, quarterly, or annually), and remit the collected tax by each due date. Retroactive liability can apply to sales made after you crossed the threshold but before you registered, so acting quickly after exceeding the threshold limits your exposure.