Sales tax without the 46-state headache
Cross roughly $100,000 in sales or 200 transactions into a state, and that state wants you registered, collecting and filing — physical presence or not. Add marketplace facilitator rules and your own website sales on top, and it becomes a moving puzzle. We run the whole thing.
From nexus study to state filing
- Nexus study: where you actually owe sales tax — economic thresholds, inventory nexus (FBA warehouses), physical presence
- State registrations wherever you have crossed a threshold
- Automated filings per state, monthly, quarterly or annually as each state requires
- Marketplace facilitator check: what Amazon, Etsy and TikTok Shop already remit for you — and what remains your job
- 1099-K reconciliation: books that match what processors report to the IRS
- Retroactive repair including voluntary disclosure agreements where they save penalties
- EU VAT & OSS when you expand into Europe — one partner for both sides
Where do you owe what?
| Situation | What you need |
|---|---|
| You sell from your home state, below other states' thresholds | Home-state registration and filing — but watch the thresholds as you grow |
| You cross ± $100,000 or 200 transactions into another state | Economic nexus: register, collect and file in that state |
| Your inventory sits in FBA warehouses across the country | Inventory can create nexus in the warehouse states — registration often required |
| You sell through marketplaces (Amazon, Etsy, TikTok Shop, Walmart) | The marketplace remits for those orders; your own site sales stay your responsibility |
| You start selling into the EU | EU VAT: one OSS return above €10,000 per year, local registrations for warehouse stock |
Thresholds differ per state and change regularly — treat the figures above as the common pattern, not as advice for your specific case. In an intro call we map your actual exposure.
Frequently asked questions
When do I owe sales tax in another state?
Since the Wayfair ruling, states can require collection based on economic activity alone. Most states set the threshold around $100,000 in sales or 200 transactions per year into that state — but the exact rules differ per state. Cross a threshold and you must register, collect and file there, even without any physical presence.
Amazon already collects sales tax for me. Am I done?
Partly. Under marketplace facilitator laws, Amazon, Etsy, Walmart and TikTok Shop collect and remit for marketplace orders. But your own website sales (Shopify, WooCommerce) are not covered, and in several states you may still need a registration and a return that reports the marketplace sales as exempt. The mix is exactly where mistakes happen.
I should have registered a while ago. What now?
It can be fixed. We map out from when you crossed each threshold, use voluntary disclosure agreements (VDAs) where they save you penalties, register retroactively where needed and file the missed returns. The sooner you address it, the smaller the damage.
What does the 1099-K have to do with my books?
Payment processors and marketplaces report your unadjusted gross sales to the IRS on form 1099-K. If your books are built on net payouts, your reported revenue will not match what the IRS already has on file — a classic audit trigger. We keep your books gross, so the numbers reconcile.
We want to sell into Europe. Can you handle that too?
Yes — that is where we come from. EU VAT, the One-Stop-Shop (OSS) return and local registrations for warehouse stock (e.g. Amazon FBA in Germany) are part of our core practice. One partner for both sides of the Atlantic.
Growing fast, or already past a threshold?
Book an intro call. We map where you owe sales tax, what it costs to get compliant and the smartest order of steps — before a state sends the letter for you.