Costco Code CST-MVM: Member Value Minder (MVM) / Instant Rebate Coupon (IRC) billback.
Costco MVM (Member Value Minder) and IRC (Instant Rebate Coupon) deductions represent vendor-funded instant savings promotions offered to Costco members. They are disputable if redemption billbacks exceed contracted funding limits or cover non-promotional dates.
Why Costco issues Code CST-MVM.
- Coupon redemption volume exceeded the signed MVM promotional funding cap
- Rebate billback applied to sales occurring outside promotional dates
Documents that win.
- Signed Costco MVM / IRC Promotional Agreement showing exact funding rates and dates
- Depot redemption movement report
- Remittance backup
How to dispute it.
Find remittance line for Code CST-MVM in Costco Depots & Merchandising Finance. Note the PO, invoice number, and claim amount.
Collect and verify documentation: Signed Costco MVM / IRC Promotional Agreement showing exact funding rates and dates, Depot redemption movement report, Remittance backup. Ensure piece counts and timestamps match.
File dispute claim package via Costco Vendor Portal selecting claim reason for Code CST-MVM (Member Value Minder (MVM) / Instant Rebate Coupon (IRC) billback) and attaching all verification documents.
Monitor claim status in Costco Vendor Portal until approved (30-45 days). Approved credit memo will apply to a future settlement remittance.
Dispute within 6 to 12 months of deduction issuance. Check your remaining filing window with our free Dispute deadline checker.
Source: Costco supplier guidance · Verified by Laxmi Narayan · 2026We audit remittances, assemble proof documents, and handle end-to-end Costco deduction recovery on pure contingency. We'll check whether yours is disputable, free, in 72 hours.