FBA Taxes and Business Records: What Sellers Must Keep

FBA Tax Obligations: The Big Picture

Amazon FBA sellers face a complex tax landscape: federal income tax, self-employment tax, sales tax, and potentially state income tax. Understanding your obligations upfront prevents surprises, penalties, and missed deductions.

This guide covers what records to keep, which deductions to claim, and how to stay compliant without drowning in paperwork.

Types of Taxes FBA Sellers Pay

1. Federal Income Tax

All profit from your FBA business is subject to federal income tax. If you're a sole proprietor or single-member LLC, this is reported on Schedule C of your personal tax return (Form 1040). If you're an S-Corp, it's reported on Form 1120-S.

2. Self-Employment Tax

Sole proprietors and LLC owners pay 15.3% self-employment tax (Social Security and Medicare) on net profit. For 2026, this applies to the first $168,600 of net income. S-Corp owners only pay SE tax on their salary, not distributions.

3. Sales Tax

You must collect and remit sales tax in any state where you have "nexus" — a sufficient physical or economic presence. For FBA sellers, nexus is triggered by:

• Inventory stored in Amazon fulfillment centers (physical nexus)
• Exceeding a state's economic nexus threshold (usually $100,000 in sales or 200 transactions)

Amazon collects sales tax in most states through its Marketplace Facilitator program, but you're still responsible for filing returns in your nexus states.

4. State Income Tax

If you live in a state with income tax, your FBA profit is subject to state tax as well. States without income tax: Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington, Wyoming.

5. Estimated Quarterly Taxes

If you expect to owe $1,000+ in federal tax for the year, you must pay estimated taxes quarterly:

• Q1: April 15
• Q2: June 15
• Q3: September 15
• Q4: January 15 (of the following year)

Records FBA Sellers Must Keep

Top FBA Tax Deductions

• Cost of Goods Sold (COGS): Product cost, inbound shipping, import duties, packaging
• Amazon fees: Referral, FBA, storage, removal, advertising
• Home office: If you use a dedicated space exclusively for business (simplified method: $5/sq ft, max $1,500)
• Mileage: Trips to the post office, supplier visits, business meetings (67 cents/mile for 2026)
• Business meals: 50% deductible if business purpose is documented
• Education: Courses, books, conferences related to e-commerce
• Business credit card interest: Only if you carry a balance past the 0% intro period
• Professional services: CPA, attorney, bookkeeper fees
• Health insurance: If self-employed and not eligible for employer-sponsored plan
• Retirement contributions: SEP-IRA, Solo 401(k), or SIMPLE IRA

Amazon 1099-K

Amazon issues Form 1099-K if your gross payment volume exceeds $600 in a calendar year (threshold lowered for 2026). The 1099-K reports gross sales, not net profit. You must still file a tax return even if you don't receive a 1099-K.

Important: The 1099-K includes sales tax collected by Amazon, refunds, and shipping income. Your actual taxable income is lower. Keep detailed records to prove this.

Sales Tax Automation

Manual sales tax compliance is impossible for multi-state FBA sellers. Use automation:

Quarterly Estimated Tax Calculation

Use this simplified formula:

1. Estimate annual net profit
2. Multiply by your federal tax bracket (e.g., 22%)
3. Add 15.3% for self-employment tax
4. Divide by 4 = quarterly payment

Example: $60,000 estimated profit, 22% bracket

• Federal income tax: $60,000 × 22% = $13,200
• Self-employment tax: $60,000 × 15.3% = $9,180
• Total estimated tax: $22,380
• Quarterly payment: $5,595

Pay online at irs.gov/payments using Direct Pay or EFTPS.

Frequently Asked Questions

Do I need to file taxes if my FBA business lost money?

Yes. Filing a return allows you to carry forward losses to offset future profits. It also starts the statute of limitations clock with the IRS.

Can I deduct inventory as an expense when I buy it?

No. Inventory is an asset until sold. You deduct it as Cost of Goods Sold (COGS) when the item sells, not when you purchase it.

What if I didn't keep good records?

Start now. Use Amazon's Date Range Reports to reconstruct past transactions. Going forward, implement a bookkeeping system. The IRS accepts reasonable estimates if you have supporting documentation.

Should I form an S-Corp to save on taxes?

Generally yes, once net profit exceeds $40,000–$50,000 annually. The SE tax savings usually outweigh the additional payroll and accounting costs. Consult a CPA for your specific situation.

Reviewed by the BizCredX Editorial Team

Guidance here is reviewed against issuer-published terms and updated as those terms change. Confirm current rates, limits, and eligibility directly with each issuer or vendor before applying.

Updated July 2026 Reviewed against current issuer & bureau terms 12 min read