Ohio Marketplace Facilitator Law: Who Collects, Who Remits, and What Sellers Still Owe

What Is a “Marketplace Facilitator” Under Ohio Law?

Ohio Rev. Code §5741.01(R) defines a marketplace facilitator as a person who contracts with a marketplace seller to facilitate the sale of the seller's tangible personal property, specified digital products, or taxable services through the facilitator's marketplace. To qualify as a facilitator, the platform must do at least one of the following: list or advertise the seller's products, collect payment from the purchaser, or transmit payment to the seller.

In practice, this captures every major e-commerce platform: Amazon, eBay, Etsy, Walmart Marketplace, Mercari, Poshmark, and dozens of smaller platforms. If a platform processes the transaction and facilitates the sale between buyer and third-party seller, Ohio treats that platform as the tax-collecting retailer. The third-party seller is the “marketplace seller” — and for facilitated transactions, the marketplace seller has no Ohio collection obligation.

The definition is intentionally broad. Ohio does not require that the facilitator take title to the goods, hold inventory, or handle fulfillment. A platform that merely lists the product and processes payment qualifies. This breadth ensures that nearly all platform-mediated sales in Ohio are covered by the facilitator collection requirement — reducing the number of individual sellers who must register solely because of marketplace activity.

What Facilitators Must Collect and Remit

Once a marketplace facilitator meets Ohio's economic nexus threshold — $100,000 in gross receipts or 200 transactions in the current or preceding calendar year, measured across all sales facilitated through the platform into Ohio — the facilitator must register with the Ohio Department of Taxation, collect Ohio sales tax on every facilitated sale delivered to an Ohio address, and remit that tax on the appropriate filing schedule.

The facilitator is responsible for applying the correct combined state and local tax rate based on the delivery destination. Ohio's state sales tax rate is 5.75%, and county-level taxes push the combined rate to between 6.5% and 8.0% depending on the delivery address. The facilitator must also handle exemption certificates — if a buyer claims a resale or other exemption, the facilitator is responsible for obtaining and retaining proper documentation.

For third-party sellers, the key consequence is straightforward: you do not collect Ohio sales tax on sales made through a qualifying marketplace. Amazon collects it. eBay collects it. Etsy collects it. The tax appears on the buyer's receipt under the platform's name, not yours. Your responsibility for those transactions — collection, remittance, record-keeping — is assumed by the facilitator.

Selling on Amazon and Your Own Shopify Store: The Split That Creates Exposure

Here is where sellers get into trouble. The marketplace facilitator law covers facilitated sales — and only facilitated sales. If you sell the same product through Amazon (where Amazon collects Ohio tax) and through your own Shopify store (where no marketplace facilitator is involved), your Shopify sales are direct-channel sales. No one collects Ohio tax on those transactions unless you do.

This is not a theoretical edge case. The multi-channel seller is the norm, not the exception. A Shopify store running alongside marketplace listings is the most common setup for growing e-commerce brands. And the direct-channel sales through Shopify, WooCommerce, BigCommerce, or a custom checkout are entirely your responsibility for tax purposes. Ohio's marketplace facilitator law does not extend to sales you make outside a qualifying marketplace.

The pattern is clear: any sale where a qualifying marketplace facilitator is not processing the transaction is a direct-channel sale, and it is your obligation — and your nexus exposure — alone.

How Facilitator Sales Interact with Ohio's $100K/200-Transaction Threshold

Ohio's economic nexus threshold for remote sellers is $100,000 in gross receipts or 200 or more transactions during the current or preceding calendar year. This is a disjunctive standard — either prong independently triggers a collection obligation. But the critical question for multi-channel sellers is: which sales count?

Ohio excludes sales made through a marketplace facilitator from the individual seller's nexus calculation. When Amazon collects and remits Ohio tax on a sale, that transaction does not add to the seller's $100,000 revenue total or 200-transaction count. Only direct-channel sales — your Shopify store, your own website, phone orders, wholesale transactions, and any other channel where you are the collecting party — count toward the threshold.

This means a seller's Ohio nexus analysis must be segmented by channel. Consider this example:

In this scenario, total Ohio sales exceed $590,000 — but only the $105,000 in Shopify sales matters for the seller's individual nexus calculation. Because direct-channel revenue exceeds $100,000, the seller has Ohio economic nexus and must register, collect, and remit on those direct-channel transactions.

Ohio Registration Once Direct Nexus Is Met

Once your direct-channel sales exceed Ohio's $100,000/200-transaction threshold, you must register with the Ohio Department of Taxation to obtain a vendor's license. Registration is done through Ohio's Ohio Business Gateway portal. The process requires your federal EIN (or SSN for sole proprietors), business entity information, and details about your Ohio sales activity.

After registration, you are assigned a filing frequency — monthly, quarterly, or semi-annual — based on your estimated Ohio tax liability. Most remote sellers with moderate direct-channel volume are placed on quarterly filing. Returns are due on the 23rd of the month following the reporting period. Ohio offers a vendor's discount of 0.75% of the tax collected (capped at $75 per reporting period) as a credit for timely filing and remittance.

The obligation to collect applies only to your direct-channel sales. You do not collect on sales made through marketplace facilitators — Amazon, eBay, and Etsy continue to handle those. Your Ohio returns should reflect only the tax you personally collected on direct transactions. Mixing facilitated and direct-channel amounts on your return is a common error that creates reconciliation problems during audits.

Audit Exposure: The Assumption That Got Sellers in Trouble

The most dangerous assumption a multi-channel seller can make is: “Amazon handles my Ohio sales tax, so I'm covered.” Amazon handles Ohio sales tax on Amazon sales. It does not handle Ohio sales tax on your Shopify store, your wholesale orders, your phone sales, or your BigCommerce checkout. If those direct channels have been generating Ohio-destined revenue above the nexus threshold, you have been under-collecting — and the Ohio Department of Taxation has the tools to find out.

Ohio's audit apparatus uses several data sources to identify non-compliant sellers: 1099-K data from payment processors (Stripe, PayPal, Square), shipping records from carriers, and cross-referencing marketplace facilitator filings against vendor's license registrations. A seller who appears on Amazon's facilitator filings as having significant Ohio sales volume — but who has no Ohio vendor's license — may draw scrutiny, particularly if the Department suspects direct-channel activity exists alongside marketplace sales.

The financial exposure for non-compliance can be severe:

• Back taxes — the full amount of Ohio sales tax you should have collected on direct-channel sales, assessed from the date your obligation began
• Interest — accruing from the original due date of each unfiled return at the federal short-term rate plus 5 percentage points
• Penalties — up to 50% of the unpaid tax for failure to file and pay, with additional penalties for negligence or fraud
• Personal liability — for officers or responsible parties of the business entity in certain circumstances

Which Platforms Qualify — and Which Leave You Exposed

Not every selling platform qualifies as a marketplace facilitator under Ohio law. The statutory definition requires the platform to facilitate the sale — which Ohio interprets as listing the product, processing payment, and connecting buyer with seller. Platforms that do all three clearly qualify. But some platforms operate in a gray area.

Payment processors like Stripe, Square, and PayPal are not marketplace facilitators. They process payments but do not list products or facilitate the sale itself. If you use Stripe to power your Shopify checkout, Stripe is not collecting Ohio sales tax on your behalf — that is your responsibility. Similarly, advertising platforms (Google Shopping, Facebook Marketplace in certain configurations) may list products but do not always process the transaction, which can exclude them from facilitator status.

For a complete breakdown of which platforms qualify as marketplace facilitators across all states, see the marketplace facilitator laws by state guide. The classification matters because a seller who mistakenly believes a platform is collecting Ohio tax — when it is not — accumulates uncollected tax liability with every transaction.

The safest approach: confirm directly with each platform whether it collects and remits Ohio sales tax as a marketplace facilitator. Most major platforms publish this information in their seller tax documentation. If the platform does not explicitly state that it collects Ohio sales tax, assume that it does not — and treat those sales as direct-channel transactions for nexus purposes.

For sellers managing nexus exposure across multiple states alongside Ohio, the sales tax nexus thresholds comparison provides a side-by-side view of how each state's threshold and lookback period interact with marketplace facilitator coverage.