Amazon Taxes for Online Sellers in 2025: Sales Tax, Income Tax, and Compliance Guide

Selling on Amazon can turn a side hustle into a serious business quickly. That growth is exciting, but it also brings tax responsibilities that are easy to overlook until a form arrives, a state notice shows up, or the year-end bookkeeping becomes a mess.

Amazon sellers often use the phrase “Amazon taxes” as if it were one single obligation. It is not. In practice, sellers usually deal with several separate tax issues at once:

• Sales tax collection and filing rules that vary by state
• Federal and state income tax on business profit
• Self-employment tax for many owners
• Information reporting such as Form 1099-K
• Nexus rules tied to inventory, warehouse locations, and sales volume
• Recordkeeping obligations that support deductions and compliance

If you sell on Amazon in 2025, you need a system, not guesswork. The goal is not just to avoid penalties. It is to understand what you owe, where you owe it, and how to keep your books clean enough to make tax season manageable.

This guide breaks down the major tax rules Amazon sellers need to understand in 2025, including how sales tax works, how income tax applies, why FBA changes the picture, and what steps help you stay compliant as your business grows.

Amazon Taxes: What Sellers Really Mean

When sellers talk about Amazon taxes, they are usually referring to two different categories of tax:

1. Sales tax: Collected from customers on taxable sales and remitted to state and local tax authorities.
2. Income tax: Paid on business profit after expenses are deducted.

These taxes are separate, even though they are connected in your bookkeeping.

Sales tax is generally a pass-through tax. You collect it from the buyer and send it to the state, if required. Income tax is different. It is based on your profit, which means your revenue minus allowable business expenses.

That distinction matters. A seller can have strong gross sales and still owe little or no income tax if expenses are high enough. A seller can also owe sales tax filing obligations even if Amazon collects tax at checkout, depending on the state and the business structure.

Why Amazon Sellers Need a Tax System Early

A lot of sellers wait until they are making meaningful money before they think about taxes. That is usually the wrong time to start.

Amazon businesses create tax complexity faster than many other online businesses because they often involve:

• Multiple states
• Inventory stored in Amazon fulfillment centers
• Automated customer collection and remittance in some jurisdictions
• Advertising expenses, shipping costs, software, and marketplace fees
• Cash flow that does not always match profit
• Year-end information forms that do not show the full tax picture

Without a system, sellers tend to mix personal and business spending, miss deductible expenses, and misunderstand what forms actually mean. A strong foundation from the start helps prevent cleanup work later.

For many sellers, forming the right business entity and keeping separate accounts can make compliance much easier. Zenind helps founders set up US business entities so they can separate business finances, document expenses properly, and build a cleaner structure for taxes and operations.

Sales Tax for Amazon Sellers

Sales tax is one of the first issues sellers run into, especially if they sell physical goods.

In the United States, sales tax is primarily governed by states, not the federal government. That means the rules can change from one state to another.

What sales tax does

Sales tax is charged on certain taxable goods and services at the point of sale. In many states, the seller is responsible for collecting tax from the customer and remitting it to the state.

Why Amazon changes the process

Amazon is a marketplace facilitator in many states. That means Amazon often collects and remits sales tax for sales made through its marketplace.

This is helpful, but it does not eliminate every obligation. Sellers may still need to:

• Register in states where they have nexus outside the marketplace rules
• File zero-dollar returns in some jurisdictions
• Track sales made on other platforms
• Monitor inventory-based nexus created by fulfillment centers
• Confirm whether Amazon has collected tax correctly in each state

Marketplace facilitator laws

Marketplace facilitator laws shift the collection burden from the seller to the platform in many states. If Amazon is the facilitator, it may handle tax calculation, collection, and remittance on your behalf.

That does not mean you can ignore sales tax entirely. It means you need to understand what Amazon is already doing and where your own responsibilities still begin.

Common situations where sellers still need attention

• You also sell on Shopify, your own website, Walmart, Etsy, or eBay
• You keep inventory in Amazon fulfillment centers across multiple states
• You sell taxable and exempt products in different categories
• A state requires registration or filings even when the marketplace remits tax
• You sell directly to customers outside Amazon

Nexus: The Rule That Creates Tax Responsibility

Nexus is the legal connection between a business and a state that gives the state the right to tax you or require filings.

There are two broad types to know:

Physical nexus

Physical nexus can arise from:

• An office or warehouse
• Employees or representatives in a state
• Inventory stored in a state
• A home office or other fixed place of business in some cases

For Amazon sellers, stored inventory is one of the most important issues. If Amazon places your goods in a warehouse in a state, that may create physical nexus even if you never personally visit that state.

Economic nexus

Economic nexus usually depends on sales volume or transaction volume into a state.

A state may require you to register, collect sales tax, or file returns once your sales reach a specific threshold there. The exact threshold varies by state and can change.

Because these rules are state-specific, sellers should monitor sales by state rather than looking only at total company revenue.

FBA vs. FBM: Why Fulfillment Method Affects Taxes

Your fulfillment model has real tax consequences.

FBA: Fulfilled by Amazon

With FBA, you send inventory to Amazon. Amazon stores, packs, and ships the product.

Tax implications often include:

• Inventory stored in multiple states may create nexus
• More states may appear on your compliance radar
• Amazon fees become part of your deductible business expenses
• Reconciliation is more important because inventory movements can affect your filings

FBM: Fulfilled by Merchant

With FBM, you store and ship the product yourself or through your own logistics setup.

Tax implications often include:

• Less inventory movement across states, which may reduce nexus exposure
• More direct control over storage and fulfillment records
• Continued responsibility for sales tax and income tax reporting
• A greater need to track shipping, packaging, and warehouse expenses accurately

Neither model removes tax obligations. FBA usually creates broader state exposure, while FBM may be simpler from a nexus perspective but still requires disciplined bookkeeping.

Income Tax for Amazon Sellers

Income tax is separate from sales tax. It is based on profit, not gross sales.

That means the IRS and many state tax authorities care about your net earnings after deductions.

How taxable income is calculated

In simplified form:

Gross sales
minus business expenses
= net profit

That profit is then reported on your tax return.

For many small sellers, income is reported on Schedule C and flows through to the owner’s individual return. Larger businesses or different entity types may report income differently.

Common deductible expenses for Amazon sellers

Typical deductions may include:

• Cost of goods sold
• Amazon referral and fulfillment fees
• Shipping and postage
• Packaging materials
• Advertising and promotions
• Software subscriptions
• Bookkeeping and accounting services
• Business insurance
• Home office expenses, if eligible
• Bank and payment processing fees
• Professional services
• Business licenses and entity maintenance costs

A deduction only helps if you can support it. That is why strong recordkeeping matters from day one.

Form 1099-K and What It Means in 2025

Many Amazon sellers receive Form 1099-K when the platform processes payments on their behalf.

A 1099-K reports gross payment activity. It does not show profit.

That distinction matters because a 1099-K can make your sales look larger than your taxable income. If you made $50,000 in sales but spent $35,000 on inventory, shipping, ads, fees, and other business costs, your taxable profit could be far lower.

What sellers should do with a 1099-K

• Reconcile the form against Amazon reports and bank deposits
• Identify returns, refunds, chargebacks, and fees
• Track inventory purchases and cost of goods sold
• Compare payment totals with your bookkeeping records
• Make sure personal transfers are not being confused with business revenue

If your books are messy, the 1099-K can create unnecessary stress. Clean records reduce that risk.

Estimated Taxes and Self-Employment Tax

Many Amazon sellers owe tax during the year, not just at filing time.

Estimated taxes

If you expect to owe enough tax, you may need to make quarterly estimated payments to the IRS and possibly your state.

This is common when your business makes a profit and tax is not being withheld from that income the way it would be for a W-2 employee.

Self-employment tax

If you operate as a sole proprietor or certain single-owner structures, you may also owe self-employment tax in addition to regular income tax.

Self-employment tax generally covers Social Security and Medicare contributions on business earnings.

Because this can significantly increase your total tax bill, it is important to set aside money throughout the year rather than waiting until filing season.

International Sellers on Amazon US

Non-US sellers who sell through Amazon US have an extra layer of complexity.

Issues may include:

• US tax reporting requirements
• Entity and withholding rules
• EIN and tax form requirements
• State sales tax exposure if inventory is stored in the US
• Cross-border income treatment and treaty considerations

International sellers should be careful not to assume that selling through Amazon automatically simplifies US tax obligations. In some cases, the platform handles payments but not the underlying compliance structure.

If you are operating from outside the United States, consider whether you need a US entity, a US tax identifier, or assistance managing inventory and filings before scaling sales.

What Amazon Sellers Should Track Every Month

Good records are the difference between a manageable tax return and a stressful reconstruction project.

At minimum, sellers should track:

• Gross sales by marketplace and state
• Refunds and chargebacks
• Amazon fees and commissions
• Advertising spend
• Shipping and fulfillment costs
• Inventory purchases and landed costs
• Bank and card statements
• Sales tax collected and remitted
• Returns and damaged inventory
• Mileage, home office, and other eligible business expenses
• Entity formation and annual maintenance expenses

The more consistently you record data, the easier it is to identify profit, estimate taxes, and respond to notices.

Best Practices for Amazon Tax Compliance

Here is a practical compliance framework for sellers in 2025:

1. Separate business and personal finances

Use a dedicated business bank account and business card. Mixing funds makes bookkeeping harder and can weaken your records.

2. Choose the right business structure

Many sellers start as sole proprietors, but an LLC or corporation may make sense as the business grows. The right structure depends on liability, tax, and operational goals.

3. Track inventory carefully

Inventory affects cost of goods sold, profit, and sometimes nexus. If you use FBA, keep a close eye on where inventory is stored and how much is moving.

4. Reconcile Amazon reports monthly

Do not wait for year-end. Reconcile sales reports, payout reports, fees, and refunds every month so you can catch issues early.

5. Monitor state thresholds

If your sales are growing, review where you may have sales tax nexus, economic nexus, or filing obligations.

6. Keep receipts and invoices

A deduction without proof can become a problem later. Keep digital copies of receipts, invoices, statements, and tax forms.

7. Work with professionals when needed

As sales rise, so do the compliance risks. A bookkeeper, tax advisor, or formation service can help you avoid expensive errors.

Common Mistakes Amazon Sellers Make

Amazon sellers often run into the same issues:

• Assuming Amazon handles every tax obligation
• Ignoring income tax because sales tax is automated
• Failing to track inventory stored across states
• Treating gross revenue as profit
• Mixing personal and business spending
• Not filing estimated taxes
• Forgetting about other sales channels outside Amazon
• Waiting until tax season to organize records

These mistakes are preventable with a better system.

When to Consider Forming an LLC or Corporation

A lot of Amazon sellers eventually reach a point where a formal business structure becomes useful.

You might consider forming an LLC or corporation if you want to:

• Separate personal and business liability
• Build a cleaner bookkeeping structure
• Open business bank accounts more easily
• Support professional vendor relationships
• Create a stronger foundation for multi-state growth
• Organize ownership and management as the business expands

Formation does not eliminate taxes, but it can make the business easier to run and document. For many sellers, that structure is a practical step before scaling.

Zenind helps entrepreneurs form US entities and maintain the corporate basics that make tax compliance and business operations easier to manage.

A Simple Amazon Seller Tax Checklist for 2025

Use this checklist to stay organized:

• Confirm your business entity and tax setup
• Separate personal and business accounts
• Reconcile Amazon sales, fees, and payouts monthly
• Track inventory and cost of goods sold
• Review sales tax nexus by state
• Confirm whether Amazon or another marketplace is collecting tax
• Save all receipts and invoices
• Estimate quarterly tax payments
• Review 1099-K and other year-end forms carefully
• Update your records when you add new sales channels or fulfillment methods

FAQs About Amazon Taxes in 2025

Do Amazon sellers always need to collect sales tax?

Not always. In many states, Amazon collects and remits sales tax as a marketplace facilitator. But sellers may still have filing or registration obligations depending on where they operate.

Do I owe income tax if Amazon already collected sales tax?

Yes. Sales tax and income tax are different. Amazon collecting sales tax does not remove your obligation to pay tax on business profit.

Does FBA create tax nexus?

It can. Inventory stored in Amazon fulfillment centers may create nexus in the states where that inventory is held.

Is the 1099-K the same as my taxable income?

No. The 1099-K shows payment activity, not profit. You still need to subtract eligible business expenses and cost of goods sold.

Should I form an LLC before selling on Amazon?

Not every seller must, but many benefit from the separation, structure, and credibility an LLC can provide. The right choice depends on your growth plans and risk tolerance.

Final Thoughts

Amazon taxes in 2025 are less about one form or one deadline and more about building a system that can handle growth.

If you understand the difference between sales tax and income tax, know how nexus works, track your expenses, and keep your records current, you will be in a far better position than most new sellers.

The best time to organize your business is before tax problems start. A clean entity structure, separate finances, and consistent recordkeeping can save time, reduce stress, and make your Amazon business easier to scale.