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Avalara’s AvaTax API is code for "get tax right"

Try our fast and easy developer demo of Avalara’s transaction tax API....Continued

Avalara Customs Duty and Import Tax Badge

Read this developer tutorial to learn about selling goods cross-border in an ecommerce environment....Continued

Incorporated vs. unincorporated addresses

A common question we see here in Developer Relations is: Why is the total sales tax different for locations in the same ZIP code? ...Continued

RefundTransaction vs ReturnInvoice

When you find you need to refund a transaction, you have two options to create your return invoice: Use the RefundTransaction API endpoint Use the CreateTransaction API endpoint with `type = ReturnInv...Continued

General Delivery in AvaTax

What is General Delivery? General Delivery is a United States Postal System means to temporarily route mail for customers who lack a permanent location. Examples of this might be: • customers who want...Continued

Using $include with CreateTransaction

The CreateTransaction endpoint is one of our most used endpoints, so we’ve baked in a certain flexibility to allow our users to ensure they get the exact information they need. How did we do this? Our...Continued

Tax Rates for Lines and Documents

The Avalara engineering team built AvaTax so it can solve tax problems for you and make your life easier. We solve compliance problems of all shapes and sizes; and our software must be both accurate a...Continued

Custom HTML Tags

Custom HTML Tags How to design better UI components and avoid over-engineering tl;dr: it’s a new approach and it’s NOT another js thing vying for market share. Yay! HTML now and forever I like writing...Continued

Why Sales Tax Calculation Is Crucial For Your Ecommerce Shopping Cart

Ecommerce rollouts can be complicated, with many moving parts. With all the demands businesses place on eCommerce systems, it can be easy to treat sales tax calculation as an afterthought. That’s a mi...Continued

The Hidden Cost of "Free" Tax Tables

In seeking a sales-tax compliance solution, many companies — especially younger, smaller ones — may turn to free tax-rate tables, using them to manually figure out how much sales tax to charge custome...Continued