Delaware is a tax-free state and doesn’t have sales tax.
Delaware retailers are now subject to demands for customer information and tax payments. Delaware law does not affect the amount of sales tax if sales tax was paid in another state. However, as of 2018, states may require Delaware companies to collect and remit sales tax on sales to consumers in the state, even if the seller is not in the consumer’s state. Delaware companies that sell goods or services to other states will be required to collect and remit sales tax to states that collect sales tax if they meet the requirements to register as a taxpayer of a particular state.
If Delaware residents buy goods or services online, they are not required to pay sales tax in another state. However, in special cases, sales tax may be imposed on online purchases. The exception is for airline tickets purchased online, in which case you will be charged federal tax. You may also be subject to local tax in the state in which you rent a hotel or rent a car in another state, even if you do it online while in Delaware.
If your company is located and does business from Delaware, but sells or buys goods in a state that has a sales tax and you need information about that state’s tax policy for non-residents, contact that state’s tax agency.