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Once your sales into a state cross its threshold, you owe sales tax there and are expected to register before the next taxable sale, whether or not you noticed you crossed the line. We find every state where you have crossed and put your registration, collection, and filing in order before a state finds it first.
The thresholds are not uniform. California and Texas both set a flat $500,000 with no transaction count. New York requires both $500,000 and more than 100 separate sales. Many states sit far lower at $100,000 or 200 transactions — where a high-volume, low-price seller trips the count without nearing the dollar figure.
Stored inventory is the one most sellers miss. It creates a physical nexus on its own, regardless of sales volume — so a business using out-of-state fulfillment (Amazon FBA or third-party warehouses) can owe registration in states it never sold much into.
Four moving parts of the full compliance cycle. We handle them end to end:
We examine the states you sell into and identify where physical presence or economic activity has created an obligation. Home state, remote sellers, inventory storage, and marketplaces all count.
We register for a seller's permit or use tax account in each state where you have nexus. New states get onboarded as your footprint grows — no scrambling before the first return.
We advise on collection setup so the correct rate is charged at checkout — including local and district rates layered on the state rate. Destination-based, not a flat guess.
Returns filed on each state's frequency (including zero returns for slow periods). Marketplace-collected sales are reconciled and deducted correctly so nothing is taxed twice.
We pull your sales by state and channel and test each state against its physical and economic nexus rules. Output: where you must register, where you are close, and where you can wait.
We register in the states that triggered nexus and set up collection so the right rate applies by destination, not a flat guess. Includes local and district rates.
Returns go out on each state's frequency, marketplace-collected sales are reconciled, and the calendar is managed so nothing lapses. Zero returns filed for slow periods.
Compliance is judged on whether the filings are right and on time, across every state, without you watching the calendar.
Cost depends on how many states you have nexus in, your filing frequency in each, your sales volume and channels, and whether there is back exposure to clean up before going current. We quote after the nexus review, since that sets the real size of the job — not a flat rate that ignores how many states you actually file in.
You do not have to know which states you have missed. That is what the nexus review is for. If you turn out compliant, we will tell you rather than sell you filings you do not need.
Every month you sell into a state where you should be registered and are not, the back tax and penalty grow. Exposure for an unregistered period stays open: California can assess up to eight years back when no return was filed, against three years once you are filing.
Stored inventory is the one most sellers miss. FBA or third-party warehouses create physical nexus on their own — regardless of your sales volume in that state.
Sources: CDTFA Wayfair Guide (CA); Texas Comptroller Remote Sellers; NY Tax Nexus Bulletin; R&TC §6487
A good fit if you:
Deeper nexus study needed? See sales tax consulting. Just need the recurring returns handled? See sales tax filing services. Already under audit? See sales tax audit.
Tell us your sales channels and roughly where you sell, and we will map where you have to register and file. You can share detailed sales-by-state figures once we talk.
If you turn out compliant, we will tell you. Rather than sell you filings you do not need.
