The rolling reserve is a portion of the merchant's income that is kept for a certain amount of time as a fail-safe in case your business has too many refunds, chargebacks, or fails to send a product to the customer. For example, if you have too many refunds, you may be considered a "risky business". For example, an acquirer may have frozen 10% of the merchant's income in January and paid it out in July; the 10% frozen in February will be paid out in August, and so on.
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