Amazon Seller Taxes: The Complete Guide to What You Actually Owe

Every January, a wave of Amazon sellers opens a 1099-K, sees a six-figure gross sales number, and briefly believes they owe tax on all of it. They don't. The single most important fact about Amazon seller taxes is that you pay income tax on profit, not revenue, and on Amazon, the gap between those two numbers is enormous. Referral fees alone typically run 8-15% of the sale price depending on category, before FBA fulfillment, storage, advertising, and your own product cost ever enter the picture.

The second most important fact: 'taxes' is not one thing. Sellers deal with at least two completely separate systems: sales tax, which Amazon now largely handles for you, and income tax, which is entirely your problem. Confusing the two is the root of most seller tax anxiety. This guide walks through the full stack: what Amazon collects, what lands on your 1099-K, where to find your documents in Tax Central, and which expenses legally shrink your bill.

Amazon seller taxes come in three layers, with three different rules

Think of your tax obligations as a stack. At the top is sales tax, a tax on the buyer that the seller (or marketplace) collects and passes to states. In the middle is income tax, meaning federal and usually state tax on your net profit. At the bottom, for most US sole proprietors and single-member LLCs, sits self-employment tax, which covers Social Security and Medicare on that same profit.

Each layer has different rules, different forms, and different deadlines. Sales tax is transactional and state-by-state. Income tax is annual (with quarterly estimated payments for most profitable sellers). Mixing them up leads to two classic mistakes: panicking that you owe income tax on the sales tax Amazon collected, or assuming that because Amazon 'handles taxes' you have nothing to file. Amazon handles one layer. The other two are yours.

• •Sales tax: collected from buyers, remitted to states, mostly automated by Amazon under marketplace facilitator laws
• •Income tax: federal and state tax on net profit, your responsibility, filed on your return
• •Self-employment tax: Social Security and Medicare on profit for unincorporated sellers, also yours

Marketplace facilitator sales tax: Amazon collects, Amazon remits

Essentially every US state with a statewide sales tax has enacted some form of marketplace facilitator law. These laws shift the obligation to collect and remit sales tax on marketplace orders from the individual seller to the marketplace itself. In practice, that means Amazon calculates, collects, and remits sales tax on the vast majority of your US Amazon orders. You'll see it flow through your settlement reports as tax collected and tax withheld: in and out, netting to zero for you.

Two things follow from that. First, marketplace-collected sales tax is not your income, even though it can appear in gross figures on your 1099-K. Second, 'Amazon handles it' is not the same as 'you can ignore sales tax forever.' If you also sell off-marketplace (your own Shopify store, wholesale invoices, in-person sales), those channels may create collection obligations Amazon doesn't touch. And a handful of states still expect registered sellers to file returns (sometimes zero-dollar ones) even when a marketplace remitted everything. Rules vary by state and change; confirm your registration obligations with a sales tax professional rather than assuming.

Income tax: you are taxed on profit, not revenue

Here's the part that actually determines what you owe in April. Income tax applies to net profit: revenue minus cost of goods sold minus operating expenses. A seller who grossed $120,000 did not earn $120,000, not even close, once Amazon's cut and product costs come out.

Walk through an illustrative example. Say you sold $120,000 of product on Amazon last year. Your inventory cost (COGS) was $48,000. Amazon fees (referral, FBA fulfillment, storage) came to $30,000. Software, prep supplies, shipping to Amazon, and other operating costs added $12,000. Your taxable profit is $30,000, exactly one quarter of the revenue figure on your 1099-K. Tax on $120,000 versus tax on $30,000 is the difference between a crisis and a normal filing season. The catch: you only get to subtract those costs if you can document them, which is why bookkeeping is a tax strategy, not an admin chore.

Worth separating two numbers people blur together. Amazon gross profit margin, revenue minus COGS divided by revenue, is a product question: in the example above it's $72,000 on $120,000, or 60%, and it tells you whether what you're selling works. Taxable profit is what's left after fees and every operating cost, and it's the only figure the IRS cares about. A seller can have a healthy gross margin and a tiny tax bill in the same year, which is normal and not a red flag.

The 1099-K: gross sales, not income

Form 1099-K is an information return that payment processors and marketplaces (Amazon included) send to you and the IRS when your activity crosses the federal reporting threshold. The threshold has changed several times in recent years and some states set their own lower triggers, so check the IRS's current rules rather than relying on an old number you read in a forum.

The critical thing to understand is what the form reports: unadjusted gross payment volume. Depending on how the marketplace reports, that figure can include amounts you never kept: refunded orders, and in some cases sales tax the marketplace collected. None of that changes what you owe; it changes what you must reconcile. Your tax return should report income from your actual books, with gross receipts and deductions that tie back to settlement data. And to kill the most expensive myth in seller forums: not receiving a 1099-K does not mean your profit is tax-free. All business income is reportable regardless of whether a form shows up.

One scoping note, since the Vendor Central vs Seller Central split changes the paperwork. Everything here assumes you're a third-party seller. A vendor sells wholesale to Amazon against purchase orders and invoices for it, so the transaction is an ordinary B2B sale with resale documentation behind it rather than a marketplace order, which means no facilitator sales tax on your side and no 1099-K to reconcile. Income tax on the profit works the same either way. If you run both relationships, keep them as separate revenue streams in your books, because they reconcile against completely different documents.

Amazon Tax Central: where your tax documents live

When sellers search for 'Amazon Tax Central' (or 'Amazon TaxCentral'), they're usually hunting for one thing: their 1099-K. Tax Central is the hub Amazon provides for tax documents across its programs (Seller Central, KDP, Associates, and others), and from a seller account you can reach your tax document library under the Reports / Tax Document Library area of Seller Central. That's where your 1099-K, tax interview details, and related forms are stored.

People often go looking in the wrong menu. Manage Orders in Seller Central shows you individual transactions and will never total up to anything a tax preparer can use; the Reports menu is where the numbers you need live. Make a habit of pulling three things from Amazon at year-end: your 1099-K from the tax document library, your date-range summary reports for the full calendar year, and your monthly settlement reports. The 1099-K tells you what the IRS sees. The settlement reports tell you what actually happened: every fee, refund, reimbursement, and tax withholding. If those two stories don't reconcile, you want to know before you file, not after a notice arrives.

Deductible expenses: where Amazon sellers leave money on the table

Every legitimate business expense reduces taxable profit dollar for dollar. Amazon sellers have an unusually long list, and the ones who track them all pay materially less tax than the ones who guess. COGS is the big one, and it must be calculated on inventory sold, not inventory purchased, which is why a perpetual inventory valuation matters at tax time. This is also where Amazon FBA accounting differs from generic small-business books: your inventory sits in Amazon's warehouses, moves between fulfillment centers, and gets lost, damaged, or reimbursed, and each of those events touches your COGS and your deductions.

Beyond COGS, the recurring deductions most sellers should be capturing include:

• •Amazon fees of every kind: referral, FBA fulfillment, monthly and long-term storage, subscription, advertising (PPC)
• •Inbound costs: freight, duties, prep center fees, poly bags and labels, often capitalized into landed cost
• •Software and services: accounting tools, repricers, keyword research, photography, design
• •Refund losses and disposal/removal fees on unsellable inventory
• •Home office, mileage to stores or carriers, and a portion of phone/internet where the rules allow
• •Professional fees: your accountant, legal advice, sales tax filings

eBay taxes and selling on multiple channels

If you sell on eBay, Walmart, Etsy, TikTok Shop, or the Best Buy marketplace alongside Amazon, the framework doesn't change; eBay taxes work the same way Amazon seller taxes do. Each of those platforms is also a marketplace facilitator, so it collects and remits sales tax on your orders in states with facilitator laws, and it issues its own 1099-K when you cross the reporting threshold.

What multichannel selling does change is the bookkeeping burden. You now have multiple 1099-Ks, multiple fee structures, multiple settlement formats, and one tax return that has to consolidate all of it. The failure mode is treating each platform's payout as 'income' and calling it a day, which quietly buries fees inside a net number and makes your gross receipts impossible to tie to the forms the IRS received. Book each channel's gross sales, fees, refunds, and reimbursements separately, then consolidate. Your accountant will thank you, and your fee deductions stay fully visible.

Clean books make taxes cheap (and quarterly estimates painless)

Notice the pattern across every section above: the tax rules are fixed, but your outcome depends almost entirely on documentation. Sellers with clean books deduct everything they're entitled to, reconcile their 1099-K in minutes, and pay quarterly estimates based on real profit instead of fearful guesses. Sellers with a shoebox of payout deposits overpay, overstress, or get unwelcome letters. Paying taxes on Amazon profit runs on two rhythms, quarterly estimates through the year and one reconciliation when you file, and both get easier when the underlying numbers are already right.

Practically, that means three habits: post every Amazon settlement to your accounting file broken out by sales, fees, refunds, and reimbursements rather than as a lump deposit; keep a perpetual inventory valuation so COGS is real, not estimated; and capture landed cost (freight, duties, prep) on purchase orders so your margins and deductions are accurate. You can do all of this by hand, and at low volume a spreadsheet plus discipline works. Past a few settlements a month, most sellers move to accounting software for Amazon sellers that automates the settlement-to-journal step. This is the exact problem BeanHawk is built for: it posts summarized settlement journals to QuickBooks Online and Xero, maintains perpetual SKU-level inventory valuation, and handles PO and landed-cost tracking, with flat all-channel pricing from $19/mo. A2X and Link My Books are worth comparing on the same criteria. Whatever tooling you use, get the books clean monthly, then have a tax professional review your specific situation; entity choice, state exposure, and estimated payments are personal, and this guide is education, not tax advice.