Yes, there are costs associated with registering for sales tax in Arizona. Specifically:

1. TPT Licensing Fee: The primary cost is the Transaction Privilege Tax (TPT) license registration fee, which is $12 per location annually. This fee is required for businesses operating in Arizona, regardless of whether they have physical storefronts or conduct online sales.

2. Local Licensing Fees: In addition to the state-level fee, some municipalities may impose their own licensing fees based on local regulations. These fees vary by location and are determined by the specific city or county where the business operates.

3. Additional Costs: Depending on the nature of the business, there may be other costs such as fees for specific permits or industry-specific licenses required by local jurisdictions.

Overall, while the state-level registration fee is relatively modest, businesses should account for potential additional local fees when budgeting for sales tax registration. Consulting with local tax authorities can provide clarity on all applicable costs, ensuring comprehensive compliance and financial planning.