Your inventory is in states you have never visited
Amazon spreads your stock across fulfillment centers nationwide, and each one can create physical nexus, no sales threshold required. Amazon collects the sales tax, but the registrations, and the income and franchise tax it never touches, are on you. We map where your inventory sits and handle what it triggers.
Amazon moves your stock. The tax follows it
Fulfillment by Amazon means Amazon decides where your inventory lives, splitting a single shipment across warehouses in states you have no other tie to. Each of those states can treat stored inventory as physical presence, which is nexus with no sales threshold to cross, and a recent ruling found even a tiny amount of inventory was enough.
Amazon collects the sales tax on those orders, which is real relief, but it stops there. The registrations some states still require, and the income and franchise tax that inventory nexus can trigger, are entirely yours. We map where your stock sits and handle exactly what each state asks for.
- Inventory in states you never chose
- Physical nexus with no threshold to cross
- Assuming Amazon covers everything
- Income and franchise tax left unfiled
- A state notice for years of exposure
- Every inventory state identified
- Physical nexus registered where needed
- Amazon collects, we handle the rest
- Income and franchise filings covered
- No surprise notice years later
Tap the states that hold your stock, see what it triggers
These are common FBA fulfillment states. Select where your inventory sits to see the two very different tax pictures it creates.
5 states, sales tax handled
Amazon collects and remits the sales tax on your FBA orders in all of them, under marketplace facilitator laws. That part is off your plate.
5 states of physical nexus
Stored inventory is physical presence, which can require registration and, separately, income or franchise tax that Amazon never collects. This part is on you, and we handle it.
Everything an FBA business needs, in one place
Entity, tax IDs, and the multi-state nexus that inventory creates, handled together.
LLC formation
The entity behind your brand
Sales tax registration
Permits where inventory sits
Inventory nexus mapping
Where your stock creates nexus
Income and franchise tax
The part Amazon does not cover
Resale certificate
Buy inventory tax-free for resale
EIN
Federal tax ID for the business
Trademark
Required for Amazon Brand Registry
S-corp election
When profit makes it worth it
From first shipment to nexus handled
Five steps, in the right order. Select one to see the detail.
Form the LLC behind your brand
An LLC separates your personal assets from the business, which matters the moment you hold inventory and sign supplier terms. We form it in your home state or wherever fits your plan, with state fees passed through at cost.
Liability protection before your stock ships to Amazon.Get your EIN and resale certificate
The EIN is your federal tax ID for banking and taxes, and a resale certificate lets you buy inventory without paying sales tax, since the tax is collected when the item finally sells. We set up both so tax is not eating your cost of goods.
Buy for resale tax-free, collect at the final sale.Find where your inventory actually is
Amazon reports show which fulfillment centers hold your stock, and therefore which states you have physical presence in. We pull that report and turn a list of warehouse codes into a clear map of the states where you have nexus.
Your inventory report, mapped to real nexus states.Register where the inventory creates nexus
In each state where your stock creates physical nexus, we handle the sales tax registration where it is required and set up the income or franchise tax registration those states expect, so both sides of the obligation are covered, not just the one Amazon touches.
Sales tax and income or franchise registrations, both handled.File the returns, and watch for new states
Amazon remits your FBA sales tax, but many states still want a return from you, sometimes a zero or marketplace-deduction return, plus the income and franchise filings. We file them, cover any own-store sales, and flag new inventory states as Amazon moves your stock.
Every return filed, and new states caught in the calendar.The nexus and the tax, not just the sales filing
Most tools stop at sales tax. The inventory and income side is where FBA sellers get caught. Here is the difference.
| Capability | File.Business | DIY spreadsheets | Sales-tax tool alone | Generic filer |
|---|---|---|---|---|
| Inventory nexus mapped by state | Not available | Partly | Not available | |
| Sales tax returns where required | Manual | Per filing | ||
| Income and franchise tax covered | Not available | Not available | Sometimes | |
| Entity plus S-corp guidance | Not available | Not available | Formation only | |
| New inventory states flagged over time | Not available | If you sync | Not available | |
| Transparent, published pricing | Tiered | Per filing |
The honest version. A high-volume seller across dozens of states benefits from a dedicated sales-tax platform and a good accountant, and nothing here replaces tax advice. What File.Business does is connect the entity, the inventory nexus, and both the sales and income filings in one place, so the part Amazon does not handle does not fall through. Compare on the comparison hub.
An operator who knows the part Amazon skips
Ask in plain English. BosAI knows inventory nexus, marketplace collection, and the income tax that comes with it.
Amazon collects all my sales tax. Am I actually fine?
How do you know my inventory is in 11 states?
One state says I owe income tax even though Amazon paid the sales tax. How?
The income tax notice never came
I thought Amazon collecting my sales tax meant I was covered. Then a state hit me for income tax on inventory I did not know was even there. Moving to File.Business, we mapped all eleven states my stock touches and got registered on both sides. When Amazon opened a new warehouse state, it was on my calendar the same week. No more surprise notices.
Representative composite based on FBA seller outcomes. Nothing here is legal or tax advice; consult your tax professional for your situation.
Nexus, registration, and the Brand Registry trademark
Practical resources for the parts of FBA that are on you. All free to read.
Sales tax registration
Where inventory nexus means you must register.
Read the guide GuideTrademark registration
The federal trademark Amazon Brand Registry requires.
Read it GuideS-corp election
When your FBA profit makes it worth electing.
Read it Live toolCompliance calendar
Sales, income, and franchise deadlines, tracked.
Open the calendarStraight answers on inventory, nexus, and tax
Does FBA inventory really create nexus?
Doesn't Amazon already collect my sales tax?
What about income or franchise tax?
How do I know which states hold my inventory?
Do I still need to register anywhere myself?
What about my own store alongside FBA?
Should my FBA business be an LLC or an S-corp?
Does this replace my accountant?
Know exactly where your inventory owes tax
Form the LLC, map the states your stock touches, and let us handle the registrations, the sales returns, and the income tax Amazon never collects. Start now, or talk with our team about your inventory.