What Are Rolling Reserves?
A rolling reserve is used by payment processors to protect themselves against potential losses resulting from credit and debit card transactions by merchants considered as high-risk.
This article considers how the rolling reserve works within the payment processing ecosystem, their significance for high-risk businesses and some practical implications for financial management.
The rolling reserve involves the retention of a percentage of each transaction made by a merchant for a certain period of time. The money withheld is kept in a reserve account, acting as a guarantee to cover future debits, refunds or other financial obligations. It works by deducting a pre-determined percentage of the transaction value whenever a customer makes a purchase using a credit or debit card. This percentage may vary depending on factors such as the merchant’s industry, risk profile and processing history. Withheld funds accumulate over time and are gradually returned to the merchant after a certain hold period.
Example of a Rolling Reserve
For example, if a trader has a 10% rolling reserve on a $100 transaction with a 90-day hold period, $10 is initially held. Over the next 90 days, as new trades occur, older reserves are gradually released. This systematic release ensures that there is always a reserve available to cover potential financial liabilities.
Duration and Terms of Rolling Reserves
The duration of a rolling reserve keeps varying and is usually set during the merchant account application process. The reserve timeframes can range from a few weeks to a few months, depending on factors such as the merchant’s risk level and industry type. High-risk merchants, such as those in sectors susceptible to high debit rates (e.g. travel, online gaming), often face longer fallback periods compared to low-risk merchants.
Payment processors describe the specific terms of the mobile reserve in the merchant contract, including the percentage retained per transaction and the length of the reserve period. These terms are essential for merchants as they have a direct impact on cash flow and financial planning.
Why Rolling Reserves are Important for High-Risk Merchants
In general, high-risk merchants face difficulties in providing payment processing services due to the perceived risks of their industry or past financial problems. For payment processors, providing services to high-risk merchants implies a corresponding higher risk of financial exposure. Voluntary reserves help mitigate this risk by ensuring that funds are on hand to cover potential losses, thereby protecting both the processor and the merchant.
Pros and Cons of Rolling Reserves
Pros:
- Rolling reserves provide a protective buffer against the financial risks associated with returns, refunds and other disputes.
- In order for high-risk merchants to qualify for essential payment processing services, it may be necessary to accept a mobile reserve requirement.
- Some payment processors offer reduced fees or better terms to high-risk merchants in exchange for a rolling reserve.
- The reserve acts as a forced savings account, guaranteeing funds are available for emergency expenses or financial liabilities.
Cons:
- The retention of a percentage of revenue can affect cash flow, especially for new or smaller businesses. So a negative point is the impact on the cash flow.
- Waiting for funds to be made available can be a challenge and may require careful financial planning to manage operational costs.

Alternative Options
In addition to rolling reserves, payment processors may offer alternative reserve options depending on the individual merchant’s risk profile and financial situation.
These alternatives may include:
Capped reserves: With capped reserves, a fixed maximum amount is withheld from each transaction until the reserve reaches its limit. Once the limit is reached, no further funds are withheld.
Up-front reserves: Some processors may require a one-time up-front lump-sum payment at the beginning of the contract with the merchant. This initial reserve provides immediate security to the processor and is released gradually based on the merchant’s transaction history and risk evaluation.
Bottom Line
In short, rolling reserves have a key role to play for high-risk merchants needing payment processing services. While they can present challenges such as reduced cash flow and extended retention windows, rolling reserves offer key benefits such as risk minimization, access to services and potential cost savings.
Merchants need to understand the mechanics and implications of voluntary reserves and consider alternative reserving options. They can then make informed decisions that line up with their business goals and financial strategies.
Read our article: “The Best High-Risk Merchant Accounts for EU Merchants in 2025” for more useful insights.
If the article did not answer all your questions, contact us today to book your free consultation with our experts.
Disclaimer
Widelia and its affiliates do not provide tax, investment, legal or accounting advice. Material on this page has been prepared for informational purposes only, and is not intended to provide, and should not be relied on for, tax, investment, legal or accounting advice. You should consult your own tax, legal and accounting advisors before engaging in any transaction. Please consult https://widelia.com/disclaimer/ for more information.