These can be integrated or operated in a stand-alone mode to class products and calculate custom duties and import taxes. The Cross-Border component  calculates customs duties and import taxes are calculated in real time and has APIs that enables users to tailor it. The cloud-based system applies tax and duty rates based on the latest local tax rules and global trade regulations in our tax engine. Users can upload Harmonized System codes or utilize integration with Item Classification, which automatically maps products to full, country-specific tariff codes (10 to 12 digits). Classification is available for almost all countries and territories. Avalara also offers the downloadable Customs Duty & Import Tax For Dummies, along with an online article “Understanding international product classification through Harmonized System codes".