It is common as companies grow and more sales are made into a state for a jurisdiction to change the filing frequency of a company. Typically, states will mail a paper notice to customers informing them of this change. Anrok will provide an alert in a jurisdiction where your sales volume may trigger a change in filing frequency, so you can be on the lookout for a notice from the state.
Please email any filing frequency change notices received from the state to taxnotices@anrok.com.