When I sell an item, is it deducted from my inventory? Christine Beck Updated September 08, 2016 20:05 Follow Spark Pay doesn't currently manage inventory via the mobile app or the Spark Pay dashboard. Return to Section Articles in this section Can I add a preset item that is non-taxable? When I sell an item, is it deducted from my inventory? How do I add an item? Comments 0 comments Article is closed for comments.