Why Walmart Marketplace Sellers Often Owe Taxes
Walmart Marketplace Issues 1099-Ks Just Like Amazon
Walmart Marketplace reports gross payment volume to the IRS via 1099-K. Sellers who are also on Amazon receive two separate 1099-Ks, both reflecting gross revenue before fees and cost of goods. Failing to report income from both platforms creates an IRS mismatch on a return.
Cross-Platform Bookkeeping Is Often Disorganized
Sellers who manage multiple marketplaces simultaneously frequently use manual spreadsheets or no tracking at all. When income from Walmart, Amazon, and a Shopify store all funnel into the same bank account without being categorized by channel, calculating accurate net profit becomes very difficult — and mistakes happen.
Returns and Chargebacks Affect Real Tax Liability
Walmart Marketplace processes returns through Walmart's own system. Refunded orders reduce actual income received, but the 1099-K may include the original sale. Sellers who don't track returns and chargebacks may overpay taxes on dollars they actually returned to customers.
Deductions That Matter for Walmart Marketplace Sellers
The point is not to get aggressive with deductions. The point is to document the real cost of earning your income so you are not paying tax on money you had to spend to do the work.
- Cost of goods sold
- Walmart Marketplace referral fees
- Shipping and fulfillment costs
- Product photography and listing creation
- Inventory management software
- Returns and refund processing costs
- Advertising on Walmart Connect
- Warehousing and prep center fees
Free Consultation — No Commitment
TaxWave reviews your situation, pulls your transcripts, and tells you exactly what your options are. No sales pitch — just an honest picture of what resolution looks like for you.
Common Questions From Walmart Marketplace Sellers
Yes — if both marketplaces are part of the same product resale business, they're reported together on a single Schedule C. All marketplace revenue is combined, and all related costs are deducted. TaxWave reconciles income from all platforms and builds one accurate Schedule C.
Walmart's referral fees, fulfillment fees, and any WFS (Walmart Fulfillment Services) fees are all deductible business expenses. These fees are similar in structure to Amazon's FBA fees and reduce the taxable profit on every sale.
COGS is tracked at the unit level — each unit sold on either platform is deducted regardless of which marketplace processed the sale. What matters is that you can document purchase price per unit and tie it to actual sales. TaxWave helps establish a clean COGS tracking methodology.
The IRS underpayment penalty is calculated based on how much you underpaid and for how long. It's typically modest compared to the actual tax owed — but it adds up across multiple quarters. TaxWave calculates your exact underpayment exposure and factors that into your resolution plan.
How Walmart Marketplace Sellers Can Stay Ahead of Taxes
Most self-employment tax debt follows the same pattern: income arrived, taxes were not set aside, and the gap compounded. Fixing the current balance is one step — staying current going forward requires a straightforward but consistent system.
- Pay estimated taxes quarterly: The IRS expects four payments per year — due January 15, April 15, June 15, and September 15. Estimates based on prior-year tax prevent underpayment penalties.
- Set aside 25–30% at every deposit: Self-employment tax (15.3% on the first $168,600 of net earnings) plus federal income tax means most mid-range earners owe 25–30% of net income. Moving that percentage to a separate account every time income hits prevents the year-end surprise.
- Track every deductible expense: Every documented business expense directly reduces taxable net income — which reduces both income tax and self-employment tax. Missing deductions means paying tax on dollars already spent on earning the income.
- File on time, even if you cannot pay: The failure-to-file penalty (5% per month, up to 25%) is ten times larger than the failure-to-pay penalty (0.5% per month). Filing a return and not paying is always better than not filing at all.
If a balance already exists, the IRS offers resolution programs at every stage: installment agreements for manageable balances, Offer in Compromise when the balance is not realistically collectible, and the IRS Fresh Start Program for qualifying taxpayers with liens or substantial back-tax balances. TaxWave determines which option fits your numbers during a free consultation.