1. Which Orders Does the Marketplace Facilitator Handle?
A qualifying facilitator generally handles tax on retail sales it facilitates through its marketplace. Confirm both its status and the covered transaction before relying on that arrangement.
Confirm the Platform's Role and Registration
The Marketplace Facilitator Act treats a qualifying platform registered or required to register with the California Department of Tax and Fee Administration (CDTFA) as the retailer for covered sales. It generally pays sales tax or collects and remits use tax on those transactions. The marketplace seller supplies the merchandise.
Keep the agreement or other documentation showing the platform's registration and responsibility for collecting, reporting, and paying the tax. Obtain its seller's permit or account number and verify its validity. A “tax handled” label alone may leave those details unclear.
Check the Scope of the Agreement
Review effective dates, covered channels, and the information sellers must supply. A platform arrangement may cover marketplace orders without covering purchases completed separately on the seller's website. Payment processing or website hosting alone does not establish that a provider is the facilitator for a particular sale.
The commercial contract also matters when allocating losses or requesting corrections. Reimbursement clauses allocate costs between the parties, but do not override statutory tax liability.
2. Match Tax Reports to Orders and Settlement Statements
A bank deposit shows the seller's payout after adjustments. It does not establish gross sales or tax payment to CDTFA.
Compare Records by Order Number
Use a common order identifier to connect the customer transaction with the platform's tax report and payout. Separate product charges, discounts, delivery charges, tax, and platform fees rather than comparing only final totals.
These records answer different questions about the same sale.
| Record | What to Check | What It Does Not Establish Alone |
|---|---|---|
| Platform agreement | Responsible entity, covered sales, effective date | Tax treatment of a specific order |
| Order and tax report | Delivery address, sales amount, tax collected | Whether collected tax reached CDTFA |
| Settlement statement | Fees, withheld tax, refunds, payout adjustments | Gross sales before deductions |
| Refund record | Original order, refunded price, tax adjustment | Whether the reporting adjustment is complete |
Platform agreement
- What to CheckResponsible entity, covered sales, effective date
- What It Does Not Establish AloneTax treatment of a specific order
Order and tax report
- What to CheckDelivery address, sales amount, tax collected
- What It Does Not Establish AloneWhether collected tax reached CDTFA
Settlement statement
- What to CheckFees, withheld tax, refunds, payout adjustments
- What It Does Not Establish AloneGross sales before deductions
Refund record
- What to CheckOriginal order, refunded price, tax adjustment
- What It Does Not Establish AloneWhether the reporting adjustment is complete
Investigate Differences before Changing Tax Entries
A smaller payout may reflect commissions, reserves, or refunds. Report dates may also place an order and its payout in separate periods. Check these differences before treating them as errors.
If an order shows no tax, check the product classification, delivery destination, and exemption documentation. Request an order-specific explanation. A missing tax line does not automatically transfer liability, and an existing tax charge should not be collected twice.
Accurate seller information still matters. Under Revenue and Taxation Code section 6046, an unrelated facilitator may obtain relief when it reasonably sought accurate information but the seller supplied incorrect or incomplete details that caused underpayment. If CDTFA grants that relief, the seller becomes the retailer for the affected sale.
3. Separate Direct Sales from Marketplace Reporting
Keep direct orders separate to assess registration, collection, and reporting obligations beyond the platform.
Review Direct Orders and Physical Presence
Orders through the seller's own website may remain its responsibility. A separate e-commerce sales law review can address the storefront's tax settings and customer-facing invoices.
Economic nexus generally arises when combined sales of tangible personal property for delivery in the state exceed $500,000 in the preceding or current calendar year. Include marketplace sales, direct sales, and sales by statutorily related persons, regardless of taxability. There is no separate transaction-count threshold. Inventory or other physical presence can create obligations below that amount.
A seller whose retail sales in or for use in the state are exclusively through registered facilitators generally qualifies for a sales and use tax registration exception. Apply that exception before concluding that marketplace volume or stored inventory requires registration. Adding direct sales requires a fresh review.
Keep Registration and Return Treatment Distinct
A seller required to file sales and use tax returns generally includes facilitated sales in reported total sales, then claims the applicable “other” deduction. Platform collection therefore does not mean that the sales disappear from the seller's return.
Reconcile the deduction with qualifying marketplace orders rather than the net payout. These are state sales and use tax requirements, separate from federal income tax reporting. An existing account also should not be treated as closed simply because sales move entirely to platforms. Confirm its status and filing requirements as part of the seller's business tax review.
4. Trace Returns and Tax Adjustments to the Original Sale
Holiday returns may appear in a later settlement. Connect the returned item, customer refund, and tax adjustment to avoid duplicate deductions.
Separate Merchandise Refunds from Tax Refunds
For a marketplace order, check who returned the purchase price and who processed the associated tax refund. A debit to the seller's payout does not show whether the customer received both amounts. Partial returns need item-level records rather than an assumption that the entire order was reversed.
For the seller's own taxable direct sales, Regulation 1655 generally requires a refund or credit of the sale price, including tax, for returned merchandise. The customer cannot be required to make a more expensive purchase to receive it. Permitted restocking and rehandling charges have specific limits. A goodwill payment without a merchandise return does not automatically qualify. Keep the original invoice and evidence of the return and refund.
Preserve an Explanation for Unresolved Entries
Record the affected order numbers, disputed amounts, platform responses, and correction dates. Keep original exports alongside revised reports. If the platform reported and paid the original tax, do not also claim that tax back as though the seller had paid it.
When a discrepancy affects a filed return or produces a CDTFA notice, an attorney can assess the responsible party and available correction procedure. Bring the contract, original reports, and a short explanation of the discrepancy.
03 Nov, 2026
