We integrate data from Amazon and eBay into our Shopify Dashboard for analytics purposes. Is there any way to have the sales tax nexus calculation exclude those transactions so the functionality is giving us a true alert for Shopify-only transactions?
Actually, in most states you need to include the revenue and transactions from ALL sales channels including external marketplaces like Amazon and eBay. There are a few states where you would want to exclude these revenues. I don't have the list of states to exclude at my fingertips, but I'll post if I come across it.
The following 26 states include sales via a marketplace as part of their measure of reaching the economic nexus thresholds: CA, CT, DC, HI, ID, IA, KS, KY, MD, MI, MN, NE, NV, NJ, NY, NC, OH, PA, RI, SC, SD, TX, VT, WA, WV, and WI.