A Streamlined Sales Tax ID (SSTID) is issued when you submit your registration through the SSTRS. That number is a 9-character ID starting with a "S." You may use your SSTID for communications with Streamlined and all Streamlined Member States.
Some states will use the SSTID for filing of returns, others will provide you with a state issued number to use. Each state should let you know what your reporting requirements are.
If you contracted with a CSP, the CSP will file the sales tax returns and remit the sales tax for you each month to each of the Streamlined Member States.
2. Filing your returns
If you did not contract with a CSP, you are responsible for filing the sales tax returns with each state using their online filing systems. The state’s registration letter will have information as to how frequent you will need to file the returns.
If you indicated you did not have sales in a state when you registered, but you now have sales, contact that state to have them set your account up to accept returns. You are registered in the state and will not be required to re-register.
You are responsible for collecting and remitting sales tax in each of the Streamlined Member States in which you have a taxable sale that is sourced (delivered) in that state. Unless you indicated you had no sales in a state you are required to file returns, even if you had no sales, as indicated in the states registration letter to you.
Do not ignore notices from a state. If you do not understand why you received a notice, contact the state as soon as possible to discuss.
You cannot end your registration for a single Streamlined Member State. However, you can contact that state and request your account be placed on a nonfiling status so that you do not need to file returns. The state will determine if a change can be made in your filing status.
Contact the state to set up your account for reporting. Because you were automatically registered in all Streamlined Full Member States when you registered, you will not need to re-register for that state.
You cannot change the indicator for no sales after you register.
There are no fees or other charges to register in a state in which you have no legal requirement to register. Some states may charge a fee if you have a legal requirement to register. If those states require a fee, they will contact you.
States may require additional information if you have a legal obligation to collect a state’s sales tax if you are not already registered in that state. If a state need additional information, they will contact you.