Why Your 1099-K Doesn't Match Seller Central (And What to Tell Your CPA)

Every January, the same scene plays out across ecommerce Reddit:

"My 1099 from Amazon doesn't match the revenue on my 2020 sales report. I'm so confused my head hurts.", r/AmazonSeller

The sellers aren't doing anything wrong. The 1099-K and Seller Central reports are measuring different things, on different cutoffs, with different inclusions. They will almost never match. The job is to reconcile them and document the reconciliation.

This is the post your CPA wishes you'd read before tax season.

What the 1099-K actually reports

The 1099-K is filed by the payment processor, Amazon, Stripe, Shopify Payments, PayPal, Square, Etsy, to report the gross amount of payment transactions processed for you during the calendar year.

Critically:

• It's the gross amount before fees, refunds, or chargebacks
• It's based on payment date, not order date
• It includes sales tax collected (which you may not even owe, see below)
• It's reported on a calendar year basis regardless of your fiscal year

The 1099-K is what the IRS sees. Your tax return needs to either match it, or explain why it doesn't.

Why the numbers never match

Here are the 8 most common reasons your 1099-K won't match Seller Central / Shopify reports:

1. Cutoff timing

The 1099-K reports payments received by year-end. Your sales report might track by order date, ship date, or some other date. Orders placed in late December but paid in January will show in different years.

2. Sales tax inclusion

Your gross sales report likely shows the product price. The 1099-K shows everything that was charged, including sales tax. The difference depends on taxable sales, jurisdictions and what the issuer included. Measure it from the issuer's tax and transaction reports; the number of states alone does not establish a revenue percentage.

3. Refunds

Refunds reduce your net sales but the 1099-K reports gross. A $100 sale and a $100 refund will show as $100 of gross revenue on the 1099-K and $0 of net revenue in your books.

4. Marketplace facilitator sales tax

For Amazon FBA in marketplace facilitator states, Amazon collects and remits sales tax. That tax flows through your account, gets included in the 1099-K gross, but you never see the cash and don't owe the tax. You have to subtract it.

5. Chargebacks

Chargebacks are processed in a different month than the original sale. They appear as negative entries that may not align with your sales records.

6. FBA inventory reimbursements

Amazon reimburses you for lost or damaged FBA inventory. Check whether each reimbursement is included in the issuer's reported gross. It is not an ordinary product sale; reconcile the reimbursement report and original inventory cost before classifying it.

7. Returns where the customer kept the product

For some products, Amazon refunds the customer but doesn't require return. The original sale is on the 1099-K, the refund is processed, but it may not show clearly as a return in your sales report.

8. Multi-channel sales mixed in one Amazon account

If you sell on both Amazon US and Amazon Canada through the same Seller Central account, the 1099-K is US-only but your Seller Central reports may aggregate.

The reconciliation framework

Here's the framework I use for ecommerce sellers. Set up a reusable bridge and retain the inputs each year. Its completion time depends on the number of processors, missing records and cutoff exceptions.

Start with: 1099-K reported amount

Then reconcile each applicable item below. Remove sales tax, reimbursements or other adjustments from the form total only when they were included; otherwise subtracting them again creates another mismatch:

Document this reconciliation in writing and retain the underlying reports. It explains the difference; it does not replace inventory, expense, accounting-method or tax-return work.

What to tell your CPA

If your CPA is comparing your books to your 1099-K and asking why they don't match, hand them this:

"The 1099-K reports gross payment volume on a payment-date basis, including sales tax (both DTC and marketplace facilitator). My books report net sales on an accrual basis, excluding sales tax. The reconciliation between the two is attached. The difference of $X is composed of: $Y in sales tax (split between $A direct and $B marketplace facilitator), $Z in refunds, $W in chargebacks, and $V in cutoff timing."

Most ecommerce CPAs see this every season and will know exactly what to do with it. If your CPA seems lost, you might need an ecommerce-specialized one, the field is genuinely different.

The Etsy / PayPal special case

Etsy issues a 1099-K for sales processed through Etsy Payments. The reporting entity depends on how the payment was processed. A separate PayPal payment may have its own reporting; do not assume PayPal reports every transaction outside Etsy Payments.

If you sold on Etsy + PayPal + Shopify in the same year:

• One 1099-K from Etsy
• A Shopify Payments 1099-K where issued under the applicable payment-type and federal or state reporting rules
• One 1099-K from PayPal (for non-Shopify, non-Etsy PayPal transactions)

Forms can overlap, be corrected or be missing. Start with payment-processor transaction IDs and reports, map each form to its reporting entity and period, and remove duplicates before reconciling to the books. Do not add all form totals and call that revenue.

The current reporting threshold and the superseded $600 rule

The American Rescue Plan Act of 2021 introduced a lower third-party settlement organization (TPSO) reporting threshold, followed by IRS transition rules. The 2025 legislation retroactively restored the earlier federal TPSO threshold. The old $2,500 transition and planned $600 threshold are not the current federal rule.

As checked October 7, 2026, a TPSO generally must report when gross payments exceed $20,000 and transactions exceed 200. Payment-card transactions follow a different rule, with no minimum transaction or dollar threshold. A form may also arrive below the TPSO threshold because of state requirements or an issuer's reporting practice.

Receiving a form does not determine whether sales are taxable. Keep the reconciliation even if no form arrives. Check the IRS reporting FAQs and Form 1099-K instructions for the applicable payment type and year.

When the 1099-K is just wrong

Sometimes the 1099-K itself is incorrect. This happens.

"We are dealing with an almost $70,000 error and so far Etsy support has not indicated they even understand the problem. It's obviously important to get this corrected before this turns into an IRS problem also.", Etsy seller, r/ecommerce

If your 1099-K is materially wrong:

1. Contact the issuer (Amazon, Etsy, PayPal) and request a corrected 1099-K
2. Document everything, emails, support tickets, dates
3. If it is not corrected by filing time, follow the IRS instructions for an incorrect Form 1099-K with your CPA; the treatment depends on what the form incorrectly reports
4. Keep the documentation in case you receive a notice

A mismatch can produce a request for explanation. Retain the form, correction request and reconciliation so you can answer with source records. Attaching a reconciliation is not a guarantee against a notice or an audit.

What good ecommerce bookkeeping looks like

If your bookkeeper isn't producing these monthly, you'll be scrambling every January:

1. Gross sales by channel (Amazon, Shopify DTC, Etsy, etc.)
2. Sales tax collected by source (you vs. marketplace facilitator)
3. Refunds processed by month
4. Chargebacks by month
5. Net revenue that ties to deposits and to revenue accounts in the GL
6. Quarterly reconciliation to platform reports

This is why ecommerce bookkeeping needs channel-level reconciliation. Test the process by asking for one month whose gross transactions, refunds, fees, tax and net deposits can each be traced to source reports.

When to call Level

If you're a $1M+ DTC brand and your books don't reliably reconcile to your 1099-K, that's a signal that the bookkeeping setup needs an upgrade. Level routinely overhauls ecommerce bookkeeping as part of fractional CFO engagements, including the chart of accounts, the reconciliation cadence, and the integration between Shopify/Amazon/Etsy and QuickBooks/Xero.

FAQ

Should my 1099-K match my Schedule C revenue? Not necessarily. Schedule C separately reports gross receipts and returns/allowances; the form reports gross payment transactions. Reconcile the payment population, sales tax, returns, timing and other-income treatment with your CPA rather than treating the form total as taxable profit.

Will the IRS audit me if my 1099-K doesn't match? Not automatically. A difference can lead to a request for explanation. Source-backed reconciliation helps answer it; this article has no measured audit or notice probabilities.

What if I sold on a marketplace that didn't issue a 1099-K? You're still required to report all income. The 1099-K is informational, your obligation is to report what you actually earned, regardless of whether anyone sent you a form.

My CPA wants me to use accrual but Amazon reports cash basis. Which is right? Management reporting and the permitted tax accounting method can differ. Cash-method eligibility depends on the inflation-adjusted three-year average gross-receipts test, aggregation, tax-shelter status and inventory rules, rather than a permanent $25M cutoff. IRS Publication 334 describes the small-business test for its stated tax year. Have your CPA confirm the threshold for the year being filed and whether a method change is required. Reconcile timing differences explicitly.

Related reading:

• Sales Tax Nexus After Wayfair: 6 States That Hurt Most
• Marketplace Facilitator Sales Tax in QuickBooks
• Ecommerce Bookkeeping That Actually Works