If you sell on Whatnot, eBay, Etsy, Amazon, or another online marketplace, you may receive a Form 1099-K after the year ends. However, the number on that form probably won’t match your bank deposits, payouts, or actual profit.

That can feel confusing when you’re trying to make sure your records are ready for your CPA.

The 1099-K for online sellers is only one piece of your financial picture. Understanding what it does and doesn’t report will make it much easier to compare the form with your books and catch possible errors before filing your tax return.

Accurate bookkeeping for resellers becomes especially important here because the form doesn’t account for many of the costs involved in running your business.

What Is Form 1099-K?

Form 1099-K is an information return that reports certain payments received for goods or services through payment cards, payment apps, and online marketplaces.

The platform or payment processor sends a copy to you and the IRS. If you sell through several marketplaces, you could receive more than one form.

For example, a seller might receive separate forms connected to marketplace sales, a payment processor used on a website, and another app used to accept business payments.

Each form needs to be reviewed alongside the seller’s bookkeeping records. It shouldn’t be treated as a complete profit-and-loss report.

What Is the 2026 Form 1099-K Reporting Threshold?

For third-party settlement organizations, including many payment apps and online marketplaces, federal reporting is generally required when a seller receives:

• More than $20,000 in gross payments for goods or services
• Through more than 200 transactions

Both parts of the federal threshold must be exceeded.

However, receiving less than those amounts doesn’t guarantee that you won’t receive a form. A platform may issue one below the federal threshold, and some states have lower reporting thresholds. Payment card transactions also follow different rules and don’t have the same minimum federal reporting threshold. Internal Revenue Service

Most importantly, this threshold determines when certain organizations must issue the form. It doesn’t determine whether your business income is taxable. Business income may still need to be reported even when you don’t receive a 1099-K.

Your CPA or tax professional can tell you how these rules apply to your business and state.

What the 1099-K for Online Sellers Actually Reports

The amount in Box 1a generally represents gross reportable payment transactions. It isn’t your take-home pay or your profit.

The IRS explains that the gross amount isn’t reduced for items such as:

• Marketplace or payment-processing fees
• Refunds and credits
• Shipping
• Discounts
• The original cost of the products you sold

So, if a marketplace reports $50,000 in gross payments, that doesn’t mean the business earned $50,000 in profit.

Your books should separately show sales as sales and inventory costs as cost of goods sold, following your established bookkeeping process. They should also account for marketplace fees, refunds, shipping expenses, advertising, supplies, and other business costs.

Those details help you and your CPA move from a gross marketplace number to a more accurate understanding of your real profit.

Why Your 1099-K May Not Match Your Bank Deposits

A marketplace payout usually reaches your bank after the platform has deducted fees, refunds, adjustments, or other costs.

The 1099-K, meanwhile, reports qualifying gross payment activity. Therefore, comparing its total directly with your deposits usually won’t produce a match.

Timing can create another difference. A sale, completed transaction, payout, and bank deposit may not all occur on the same day or even in the same month.

That doesn’t necessarily mean the form or your bookkeeping is wrong. It means you need the marketplace reports that explain how gross sales became net payouts.

For Whatnot activity specifically, you can use ELB’s guide to reconcile your Whatnot payouts against fees, refunds, adjustments, and bank deposits.

What Online Sellers Should Review Before Tax Season

Don’t wait until your tax appointment to look at the form for the first time. When it arrives, compare it with the records you already maintain.

Review:

• The name and taxpayer identification information
• The platform or processor that issued the form
• The gross amount reported
• Your annual sales reports from that platform
• Refunds, fees, adjustments, and other selling costs
• Whether business and personal transactions were mixed together
• Whether the same income may have been recorded twice

If the identifying information or reported amount appears incorrect, contact the issuer. Don’t simply change your bookkeeping to force it to match a form you believe is wrong.

Keep the original form, any corrected version, your marketplace reports, and your bookkeeping records together. Your CPA may need all of them to determine the proper treatment.

Organized Books Make the Form Easier to Understand

The 1099-K for online sellers isn’t a profit statement, and it isn’t a substitute for consistent bookkeeping. It’s one reporting document that needs to be understood alongside your sales, expenses, inventory costs, refunds, and marketplace reports.

Before meeting with your CPA, review the documents your CPA may need and gather the records connected to every platform you use.

If your sales are spread across several marketplaces or your payouts no longer feel manageable, ELB offers monthly bookkeeping support for resellers and e-commerce businesses. You can schedule a free 15-minute discovery call to talk through what’s happening in your books and the support that may make sense for your business.

Ever Leslie Bookkeeping provides bookkeeping and financial-organization services. We are not CPAs, don’t prepare tax returns, and don’t provide tax advice. Please confirm reporting requirements and tax treatment with a qualified CPA or tax professional.