If you compare high-risk merchant accounts on rate alone, you will pick the wrong one. The reserve is usually the larger number, and it is the one that determines whether you can actually fund your business month to month.
What a rolling reserve is
A rolling reserve is a percentage of your processing volume that the acquirer holds back and releases on a delay. If your reserve is 10% held for 180 days, then for every AED 100,000 you process, AED 10,000 is withheld and paid to you six months later. It is your money throughout — it is not a fee — but you cannot use it, and while the arrangement is running you are permanently carrying a balance that never comes back to zero.
Acquirers use reserves because they carry the liability for chargebacks. If a merchant fails, the acquirer refunds cardholders out of its own funds. The reserve is the buffer that makes underwriting a higher-risk business commercially possible at all. It is not a punishment, and pushing back on the concept entirely will not get you far. Negotiating the terms often will.
Doing the arithmetic
At steady state, the amount tied up is roughly your monthly volume multiplied by the reserve percentage, multiplied by the reserve period in months. A merchant processing AED 500,000 a month on a 10% reserve held for six months has around AED 300,000 permanently withheld. On a 5% reserve held for three months, it is AED 75,000.
Now compare that to rate. The difference between a 3.9% and a 4.4% discount rate on AED 500,000 a month is AED 2,500 a month. The difference between those two reserve structures is AED 225,000 of working capital. If the provider quoting 3.9% is the one holding 10% for 180 days, the cheaper-looking option is the one that puts you under cash-flow pressure. Run this calculation before you compare anything else.
Reserve structures vary more than rates do
Rates across high-risk providers cluster within a fairly narrow band. Reserve terms do not. You will see fixed percentages, tiered structures that reduce as your history improves, capped reserves that stop growing once they reach a set amount, and upfront reserves taken as a lump sum instead of a rolling hold. Some providers publish indicative terms; many assess case by case and will not commit before underwriting. That is normal, but it means you must get the terms in writing before signing, not after.
Questions to ask before you sign
- What is the reserve percentage and the hold period, in writing?
- Is the reserve capped, and if so at what amount?
- Will it reduce over time, and against what specific criteria — volume, months of history, chargeback ratio?
- Under what circumstances can you increase it, and how much notice do I get?
- What happens to the reserve balance if I terminate, and how long after closure is it released?
- Is the reserve held in AED or converted, and who bears the FX movement?
Frequently asked questions
No, but most do, and merchants with a prior termination or an elevated chargeback ratio should expect one. Some providers waive reserves for card-present-weighted businesses or for merchants with a long clean history. Ask early — it is the single largest variable between otherwise similar offers.
Yes. Reserve funds are your money, held temporarily against future chargebacks and released on the agreed schedule. If the account closes, the balance is normally retained until the dispute window on your final transactions has passed, then released. Confirm that final timeline in the contract.
Sometimes, particularly the step-down schedule rather than the opening percentage. The strongest lever is evidence: clean processing history, a low dispute ratio, and documentation that shows the driver behind any past problem has been fixed.
Compare providers by reserve terms, not just rate
This guide is general information about payment processing and does not constitute legal or regulatory advice. Requirements change and vary by jurisdiction and by licence type. Confirm anything material with UAE-qualified counsel or the relevant authority before acting on it.