Get Sales and Use Tax Information for consumers in the business section. Maryland Tax Connect is a self-service portal that allows Marylanders to file their taxes online more easily and more securely.Property Tax Credits. Our free online guide for business owners covers Maryland sales tax registration, collecting, filing, due dates, nexus obligations, and more. Exemptions for government, nonprofits, ambulances, and funeral vehicles. Out-of-state dealers file Form ST-8 and collect sales tax based on the rate at the destination of the shipment or delivery (destination-based sales tax). This memorandum describes various forms of accounting documentation and gives instructions for their completion. Get ahead of the curve with our Maryland Sales Tax Guide, offering insights into compliance, rates, and business regulations. What if you lived in more than one state? GSTR-3B, GSTR-1 etc.