We use FunnelKit’s One Click Upsell plugin. This plugin uses woo’s wc_get_price_including_tax() method for calculating and charging sales tax. Unfortunately, TaxJar does not have a wc_get_price_including_tax() method, so the One Click Upsell plugin does *not* charge the credit card for state sales taxes. Really need TaxJar to add this functionality.
Currently only Taxjar Production mode is possible. Please make it possible to use the Taxjar Sandbox Token and switch between the two enviroments.
With the upcoming HPOS changes to WooCommerce, it would be fantastic to see the Taxjar plugin be compatible. Are there plans for this in the near future? I believe the change is announced for August. Thank you greatly!