By NUMUS editorial team
A rolling reserve sets aside part of eligible payment proceeds and releases older amounts according to the account’s terms while new amounts continue to be withheld. Understanding it means answering three questions: what goes in, when it becomes eligible to come out, and what can change that outcome?
Square’s description of its own rolling reserves illustrates this mechanism: a percentage of affected card payments is set aside, with releases occurring over time. Its specific terms belong to Square accounts, not every processor. Square: Manage payment reserves.
If the account relationship itself is unfamiliar, begin with our merchant account guide. Here, the task is narrower: turn the actual reserve provision into a schedule you can understand and question.
Start with the written terms
Collect the offer, reserve notice and relevant agreement provisions. Keep their dates together. A percentage mentioned during a sales call does not explain which payments it applies to, how the holding period is measured or what happens after processing stops.
Create a short summary with five fields:
- Calculation base: the transactions or proceeds included in the calculation.
- Amount: the percentage, fixed amount or target balance.
- Timing: when withholding starts and how release eligibility is calculated.
- Conditions: obligations that can reduce the reserve and circumstances that can change its terms.
- Reporting: where additions, deductions and releases appear.
Leave a field marked “not confirmed” until you have an answer. That is more useful than filling a gap with a term from another merchant’s account.
Reserve, payout delay or processing fee?
The words can describe different movements of money. PayPal distinguishes rolling, minimum and upfront “jumpstart” reserves; Shopify Payments describes fixed-amount and percentage-based reserves. These are provider-specific naming systems, so ask for the mechanism rather than relying on a label. PayPal: Account reserves, Shopify: Reserve overview.
| Description in the offer | Question that identifies the mechanism |
|---|---|
| Rolling reserve | Does each withheld amount have its own release schedule? |
| Minimum or target balance | Does withholding build toward a target, and what replenishes it after deductions? |
| Fixed or upfront amount | Is a defined sum withheld immediately or accumulated, and what releases it? |
| Normal payout schedule | When are available funds scheduled to be transferred? |
| Payout pause or account-review hold | What restriction is active, what information is outstanding and who can clarify it? |
| Processing fee | What service charge is being assessed, separately from funds held in reserve? |
A delayed deposit does not, by itself, establish that there is a reserve. Shopify’s payout documentation separately discusses settlement, payout schedules, bank processing and account-review delays. Use the distinction to ask the right question; do not apply Shopify’s timing to another provider. Shopify: Payout timing.
A fictional rolling-reserve schedule
The following example is invented to show arithmetic. An 8% withholding rate and this release pattern are not a NUMUS quote, a typical rate or recommended terms.
Assume:
- The reserve starts at zero, and the calculation base is the eligible proceeds shown below.
- Each month contributes 8% of those proceeds.
- For this simplified monthly model, Month 1’s contribution releases in Month 4, Month 2’s in Month 5, and Month 3’s in Month 6.
- All modeled releases occur as assumed; there are no deductions, term changes or other adjustments.
Real accounts may calculate eligibility by individual transaction dates or another schedule. This table does not convert a stated number of days into calendar months.
| Month | Eligible proceeds | New withholding at 8% | Assumed release | Ending reserve balance |
|---|---|---|---|---|
| 1 | $25,000 | $2,000 | $0 | $2,000 |
| 2 | $40,000 | $3,200 | $0 | $5,200 |
| 3 | $30,000 | $2,400 | $0 | $7,600 |
| 4 | $50,000 | $4,000 | $2,000 | $9,600 |
| 5 | $20,000 | $1,600 | $3,200 | $8,000 |
| 6 | $35,000 | $2,800 | $2,400 | $8,400 |
For Month 4, the calculation is $7,600 + $4,000 − $2,000 = $9,600. The reserve grows even though releases have begun, because the new contribution is larger than the older amount released. In Month 5, the reverse happens.
Month 4’s $50,000 of eligible proceeds, less $4,000 newly withheld, plus $2,000 released, leaves $48,000 before other adjustments. That is not a predicted bank deposit. The model excludes fees, refunds, disputes, deductions, payout cutoffs and bank arrival times.
Try your own numbers in the rolling reserve calculator. It models each day’s withholding and calendar-day release, lets you compare two reserve scenarios, and includes a downloadable daily schedule. Its daily model uses different assumptions from the simplified monthly example above.
The example’s practical lesson is to model changing volume. A stable monthly withholding assumption can conceal the effect of a launch, seasonal peak or decline in sales.
Bring your actual terms and the questions this exercise raises to NUMUS. Discuss reserve questions in your offer.
Reconcile the balance and the release separately
For your own record, start with this reconciliation:
Opening reserve + new withholding − releases − amounts applied to obligations ± other adjustments = ending reserve.
Record what each adjustment means, rather than treating every reduction as money paid to you. Then match any released amount to its next destination in the provider’s reporting.
A release from reserve and arrival in your bank are separate events. Square, for example, says released funds move into its available balance and then follow the account’s transfer settings. That is a useful distinction, not a transfer promise for your account. Square: Reserve duration.
Keep a simple release log: expected eligibility date, expected amount, actual reserve entry, payout reference and unresolved difference. Our processing-statement guide explains the broader reconciliation between sales, fees and deposits.
Ask about changes before relying on a date
Shopify says its reserve review can result in maintaining, reducing or increasing a reserve. Its documentation also separates an expiry date from the subsequent payout process. This illustrates why a reserve’s review, release and bank-arrival dates should not be treated as interchangeable. Shopify: Extending and removing reserves.
Ask the proposed provider:
- Which written provision determines the calculation base and release clock?
- What happens to the reserve when a related payment is refunded or disputed?
- What obligations can be paid from it, and how are those entries reported?
- Can the percentage, target or duration change, and how is notice provided?
- What is the review process, and does a review necessarily result in a change?
- What happens to existing funds if sales fall, processing stops or the account closes?
- Who can investigate a release that differs from the schedule?
Stopping new processing does not answer these questions. Obtain the account-specific closeout explanation before treating the balance as available cash.
Prepare a useful processing conversation
Place the modeled reserve schedule beside your delivery commitments and operating expenses. Mark uncertain releases as uncertain. Recalculate the example with lower sales, larger refunds or a later release so you can see which assumptions matter; this is a planning exercise, not a financing recommendation.
Use the application checklist to organize the business information behind the offer. If your model needs a more specialized placement discussion, explore high-risk merchant account support.
NUMUS can discuss your business and the reserve questions in a proposed processing relationship. The applicable provider determines eligibility and written terms. Discuss reserve questions in your offer.
Sources are linked beside the relevant explanations. Read our editorial approach.