What is seller’s permit registration?
The state sales-tax permit, registered where nexus says you need it — with the resale-certificate layer explained.
A seller's permit — also called a sales tax permit, sales tax license or resale permit depending on the state — is the state Department of Revenue's authorization to collect sales tax from customers and remit it on a schedule the state sets. It is a state-level instrument, not a federal one: 45 states levy a general sales tax, and each runs its own permit process, its own filing frequency, and its own rules for what counts as a taxable sale in that state. A business that starts selling into a new state without the permit registered first is collecting tax it has no legal standing to collect, or worse, not collecting tax it owes — both are compliance problems that surface at the state's audit, not at checkout.
The trigger for needing a permit in a given state is nexus — a connection to that state substantial enough that the state can require you to collect its tax. Nexus comes in two forms: physical (an office, a warehouse, inventory sitting in a fulfillment center, an employee working remotely from that state) and economic (crossing a state-set dollar or transaction-count threshold in sales to customers there, even with zero physical presence — the rule every state adopted after the 2018 Wayfair decision). Figuring out which states you have nexus in, and when you crossed an economic threshold, is a separate exercise from registering the permit itself; if that mapping hasn't been done yet, it belongs at the nexus-analysis-registration service, because registering in the wrong state, or missing the state where nexus actually exists, both create the same downstream problem — a permit filed against facts nobody checked.
Who does what
| Your CapEasy team | Seller’s permit registration, the reconciliations and reporting behind it, and the questions list that keeps it honest. |
| Your CPA or enrolled agent | Everything that carries a licence in United States — rendered exactly as written: issue compilation, review or audit reports — those are restricted to licensed cpa firms. |
| You | One conversation with one named person, and the decisions that are genuinely yours. |
Seller’s permit registration in United States
A seller's permit fee runs from free to a few dollars — except in California, where it can be a security deposit instead of a fee
Most states charge nothing to register: Florida is free online (a $5 paper-filing fee applies only if you skip the online portal), and a large majority of the 45 sales-tax states have no registration fee at all. A handful charge a small flat amount — Arizona $12, Wisconsin $20, Connecticut $100. California is the outlier and the one most often misunderstood: CDTFA does not charge a registration fee, but it can require a security deposit, set case-by-case at the time of application based on the applicant's estimated monthly taxable sales, capped at $50,000 per person. It is not a fixed small charge, and whether one applies at all depends on CDTFA's own review of the figures submitted — a business estimating high monthly volume in California should expect that question, not a flat number quoted in advance.
Economic nexus thresholds are set state by state, and crossing one creates a registration obligation retroactive to the crossing date
Every sales-tax state now taxes remote sellers once they cross a state-set threshold — commonly a dollar figure in annual sales into that state, sometimes paired with a transaction-count trigger, though several states have dropped the transaction-count leg in recent years. The obligation to register begins on the date the threshold is crossed, not the date the business notices — which is why nexus mapping needs to happen before a permit application, not as an afterthought once a state sends a notice.
A resale certificate is only valid while the underlying permit is active, and only for goods genuinely bought for resale
Presenting a resale certificate to a supplier is a legal representation that the goods purchased will be resold and taxed once at the point of retail sale, not consumed by the buyer. A certificate presented for goods that were never resold, or presented after the underlying permit lapsed, is invalid on its face — the tax that should have been collected once at the point of sale ends up collected nowhere.
Filing frequency is assigned by the state at registration and can change based on actual sales volume
The estimated taxable-sales figure on the application is what most states use to assign monthly, quarterly or annual filing frequency to the new account. States commonly review and reassign frequency after actual filing history builds up, so a business that under- or overstated its estimate at registration should expect the state to correct the cadence once real numbers are on file, rather than treating the original assignment as fixed.
What your CPA or enrolled agent receives from us
- The completed seller's permit application packet for the state Department of Revenue — entity details, EIN, NAICS/activity code and the taxable-sales estimate — ready for the state's online portal.
- A nexus-basis note stating which trigger (physical presence, or the economic threshold and the date it was crossed) supports registering in this state, so the application and the underlying facts agree.
- The California security-deposit question flagged and answered directly, where the state is California — the estimated monthly taxable-sales figure that CDTFA will review, submitted with the application rather than surfaced as a surprise afterward.
- A resale certificate drafted and ready to issue to suppliers once the permit is active, referencing the live permit number.
- A filing-frequency and due-date calendar entry once the state assigns the account's cadence, so the first return isn't a scramble.
- A copy of the state-issued permit number and certificate, filed alongside the entity's other registration records.


