To file or pay your taxes, visit the Maryland Tax Connect portal, use an independent software provider, or a professional tax preparer. Buyers may claim a refund for any tax paid on purchases for resale, using line 11 of their next sales and use tax return.Electronic filing Sales taxes can be filed online through the Comptroller website. A taxable asset purchase allows the buyer to "step up," or increase, the tax basis of the acquired assets to reflect the purchase price.