1. Which Order Records Support the Taxable Amount?
Start with individual transactions rather than bank deposits. For sales and use tax reporting to the California Department of Tax and Fee Administration (CDTFA), records should explain what sold, how the price changed, and who handled the tax.
Connect Orders, Payments, and Adjustments
Use a consistent order ID to connect invoices, payments, fulfillment details, and adjustments. Preserve original entries alongside corrections so a reviewer can follow the calculation.
A reconciliation file should include the following fields. Each supports a different part of the reporting decision.
| Record | What It Helps Establish |
|---|---|
| Product description and item price | What sold and its potential tax treatment |
| Transaction date and delivery details | Timing and location |
| Discount code and funding source | Whether the reduction affects taxable receipts |
| Sales channel and tax report | Who collected and reported tax |
| Return and refund references | Support for later adjustments |
Keep shipping charges separate. Their tax treatment depends on the delivery arrangement and applicable conditions, not merely the checkout label.
Reconcile Sales with Platform Payouts
Processors may deduct fees, reserves, or refunds before transferring funds. These deductions do not automatically reduce taxable sales. Reconcile the underlying transactions before accounting for settlement deductions.
When totals differ, check reporting dates, cancellations, and missing entries before changing a tax figure. Payment disclosures and consumer refund policies require separate e-commerce compliance review.
2. How Discounts and Coupons Affect Taxable Receipts
The customer’s checkout payment may not represent the full taxable selling price. Identify who funds each discount and whether another party reimburses the seller.
Distinguish Retailer Discounts from Manufacturer Coupons
Regulation 1671.1 generally excludes retailer-funded coupon reductions from taxable receipts when no third party compensates the retailer and the customer has not previously paid for the coupon. Manufacturer reimbursements for manufacturer coupons generally remain taxable on an otherwise taxable sale.
For jointly funded promotions, separate the retailer’s reduction from the manufacturer’s contribution. Keep campaign terms, reimbursement statements, and item-level allocations. “Black Friday savings” alone does not establish tax treatment.
Review the underlying commercial contracts if reimbursement obligations are unclear. The agreement explains the payment arrangement, while tax law determines its treatment.
Verify the Checkout Calculation
Compare promotion settings with the amount used to calculate tax. A system may reduce the customer’s payment correctly while using the wrong taxable base.
For multi-item orders, preserve the discount allocation rather than only an order-wide total. Track reimbursements received after settlement. If the seller collected excess tax reimbursement, determine the required correction instead of treating it as revenue.
3. Separate Marketplace Sales and Returned Merchandise
Platform collection and customer refunds require different supporting records. Document the facilitator’s responsibility separately from any returned-merchandise adjustment.
Confirm the Marketplace’S Responsibility
A marketplace facilitator registered or required to register with CDTFA generally handles tax on covered marketplace sales. Retain evidence of that responsibility, transaction reports, and the facilitator’s permit or account information.
A payment processor is not automatically a marketplace facilitator. Direct website sales may remain the seller’s responsibility even when a platform handles tax on other orders.
A registered seller generally reports marketplace sales and claims the applicable deduction for sales the facilitator handles. Do not simply omit these transactions. Follow the return instructions and retain supporting reports.
Match Refunds to Returned Items
Regulation 1655 generally allows a returned-merchandise deduction when the seller refunds or credits the full sale price, including the amount designated as sales tax. The customer must not have to buy higher-priced replacement property to receive the refund.
Qualifying rehandling and restocking costs may be withheld within the regulation’s limits. Calling a deduction a “restocking fee” does not establish eligibility.
Keep the original invoice, returned-item details, refund amount, tax adjustment, and processing date. For partial returns, identify the affected items and allocated discount. A chargeback alone does not prove that merchandise was returned or that the deduction requirements were met.
4. Preserve Records and Resolve Remaining Tax Questions
The reconciliation should connect source documents to the return. Investigate unexplained differences rather than entering an unsupported adjustment to make totals match.
Retain Usable Data and Correction Notes
Regulation 1698 requires records supporting the correct liability and return preparation. Generally, retain required records for at least four years and longer while a relevant audit, appeal, or refund claim remains unresolved.
Preserve accessible electronic transaction data before systems overwrite it. Dashboard screenshots may omit details needed to reproduce calculations. For corrections, record the reason, supporting documents, and affected reporting period.
Separate Transaction Review from Registration Review
Order reconciliation does not settle registration obligations. Physical operations, inventory, and sales volume may create duties independently of a promotion.
The economic nexus test generally includes combined sales of tangible personal property delivered into California exceeding $500,000 in the preceding or current calendar year. Related-party and marketplace sales can count. Sales below that amount do not rule out obligations based on physical presence.
Use state and local tax review for unresolved registration, sourcing, or earlier-period issues. Assess other states separately, using the reconciliation to identify relevant orders and documented differences.
02 Nov, 2026
