Marketplace Sales Tax: Who Must Remit — Sellers Or Marketplaces?

Sales Tax is a transaction tax generally charged on taxable retail sales and remitted by registered sellers or marketplaces. Over the last decade, many states have adopted marketplace facilitator laws that shift the duty to collect and remit sales tax from individual third-party sellers to the marketplace platform that facilitates the sale.

What Marketplace Facilitator Laws Do

Marketplace facilitator laws require the marketplace (the company listing and handling payments or logistics) to collect and remit sales tax for sales made through its platform, even when the underlying seller would otherwise have been responsible. These laws simplify compliance for small sellers but create obligations for marketplaces across multiple states. The exact scope — which transactions are covered and effective dates — varies by state.

Who Is Considered A Marketplace

States generally define a marketplace as an entity that lists or facilitates the sale of goods or services by multiple sellers, processes payments, or fulfills orders. Marketplaces that operate fulfillment services, handle shipping labels, or process transactions typically fall within state definitions. Some laws apply only when the marketplace has a certain level of involvement in the transaction; others are broadly written to sweep in most platforms.

Consequences For Sellers And Marketplaces

For sellers on marketplaces, facilitator laws often relieve the administrative burden of registering and filing in each state where the marketplace collects tax. Sellers should, however, confirm the marketplace’s reporting practices and whether sellers still need to register for exemption collection, file information returns, or handle returns and refunds reporting. Marketplaces must manage collection, filing, and remittance in each state where they have an obligation, which increases compliance complexity for the platform.

• For Marketplaces: Collect tax at point of sale, file returns, and remit to states that require marketplace collection.
• For Sellers: Verify whether the marketplace collects and remits tax on your behalf; retain records and understand any remaining reporting requirements.

How Rates And Sourcing Work On Marketplaces

When a marketplace collects tax, it generally applies the tax rate and sourcing rules required by the buyer’s jurisdiction — destination-based sourcing is common. Marketplaces must integrate accurate rate lookups for state and local jurisdictions and manage exemption certificates from buyers or resellers where applicable. Refunds and returns must be handled so that tax is adjusted correctly in accounting and remittance records.

Practical Example

A boutique that sells handmade goods via a major online marketplace finds that the platform now collects and remits sales tax for buyers nationwide under marketplace facilitator laws. The boutique does not need to register in many buyer states to collect tax, but it must: (1) track marketplace sales and tax remitted for its accounting; (2) provide documentation for exempt sales; and (3) determine whether it still has other state filing or registration obligations (for example, corporate income tax or registration if it stores inventory in a state).

Tips For Sellers And Marketplaces

• Confirm Coverage: Sellers should review marketplace policies and state law language to confirm which sales the marketplace covers.
• Retain Records: Keep marketplace invoices, tax remittance reports, and exemption certificates to support your tax positions during audits.
• Coordinate Accounting: Match marketplace remittance reports to your sales ledger so tax-collected amounts are not incorrectly expensed.

In short, the Sales Tax duty falls on either the seller or the marketplace depending on state law; as marketplace facilitator statutes spread, platforms increasingly collect and remit tax for third-party sellers. Sellers should confirm each marketplace’s practices and retain documentation while marketplaces must manage multi-jurisdictional collection and remittance obligations.