Rolling Reserve
A rolling reserve is a percentage of your payment volume that a processor (Stripe, Shopify Payments, PayPal) holds back for a defined period — typically 120 days. It's risk protection: if chargebacks hit, the processor uses the reserve to cover them without pulling from your bank account.
Rolling reserves are applied to higher-risk merchants: new accounts, accounts in risk categories (supplements, weight loss, CBD), or accounts with elevated chargeback rates. A 10% rolling reserve on a 120-day window means that on any given day, you have 40 days of 10%-of-revenue held — that's real working capital locked up.
Mitigating reserves: track clean for 3-6 months; negotiate with the processor at the first review window; offer volume commitments; maintain chargeback rate well under 0.5%.