Who can prepare sales tax returns? Unlicensed filing, POA authority, and where a CPA/EA/attorney comes in

What is unlicensed: registration, returns, amendments, closures

The bulk of what a business actually needs done — determining where it has nexus, registering for a sales tax permit in each state that requires one, filing the periodic return (monthly, quarterly, or annual, whichever the state assigns), amending a registration after an address or ownership change, and closing an account when the business stops selling in a state — is clerical filing work under state law. A preparer submits these directly through the state's own online portal, typically as an authorized agent acting under the client's account or a signed power-of-attorney authorization, not under any license of their own.

This extends to exemption and resale certificate handling too: collecting, validating, and storing the certificates that let a business sell to another business without charging tax is a documentation function, not a licensed one.

• Nexus analysis and permit registration — unlicensed, filed per state
• Periodic return filing — unlicensed, filed per state on the assigned cadence
• Registration amendments (address, ownership, entity changes) — unlicensed
• Account closure / final return — unlicensed, requires an explicit closure request in most states
• Exemption and resale certificate collection/validation — unlicensed documentation work

Where the gate shows up: contested audits, appeals, and voluntary disclosure

The line moves once a state issues an audit notice the business wants to contest, or once negotiated resolution is on the table. Responding to a routine notice — a nexus questionnaire, a non-filer letter, a straightforward math-error correction — is still unregulated preparation work, gathered and submitted the same way a return is. Formally arguing a disputed assessment in an administrative hearing, or giving positional legal advice on how to fight it, is where a state's unauthorized-practice-of-law rules start to matter: CPAs and enrolled agents can generally represent taxpayers in administrative tax proceedings, but litigating a genuine dispute, or appearing in a forum that requires bar admission, can require a licensed attorney depending on the specific state and forum.

A related, proactive path sits in the same unlicensed-preparation category: a Voluntary Disclosure Agreement, where a business that has unregistered/unpaid exposure in a state can self-report before the state makes contact, in exchange for a reduced look-back period and penalty relief. The Multistate Tax Commission runs a joint VDA program that several states participate in as a common front door. Preparing the VDA application and the back returns it requires is unlicensed work under the same logic as ordinary filing — the state's review and negotiation of terms is what determines the outcome, not the credential of whoever assembled the disclosure.

CapEasy's sales tax work sits on the preparation side of this line: nexus mapped, permits registered, returns prepared from reconciled ledgers, and routine notices answered with a reconciliation — filed under the client's own account credentials or a client-signed authorization, per state. It does not represent a client in a contested audit hearing, an appeal, or any proceeding calling for positional legal argument; those stay with the client's own CPA, enrolled agent, or attorney.