Rolling Reserve Cash Flow Calculator for Dental Practices

Why dental practices get placed on a rolling reserve

Most chairside payments are low risk: a patient pays their portion at the front desk and the treatment is already done. Reserves usually come from the parts of a dental practice where money arrives before the work is finished. Examples include prepaid orthodontic and clear aligner cases, multi-phase implant treatment paid in full up front, and large treatment plans collected before the first appointment. If a patient cancels or disputes the charge, the processor can be on the hook for a refund on work that was never delivered.

Other common triggers are a newly opened practice, a change of ownership, a move from a small solo office to a multi-provider group, or a sudden jump in volume after adding implants or sedation. Underwriters may also look harder when a growing share of payments is card-not-present: balances collected over the phone after insurance processes, text-to-pay links, patient portal payments, and in-house membership plans billed monthly to a card on file.

Your card mix also affects the inputs you use. Dental tickets range from small copays to cases worth several thousand dollars, and many patients pay with rewards cards, HSA/FSA cards, or, for some insurers, virtual cards. There are no tips, so your card volume is simply the patient and insurer payments you collect by card. Enter that figure, not total production.

Worked example: a hypothetical dental practice

These numbers are hypothetical and are not a quote. A general dentistry office runs $80,000 a month in card volume with flat volume. Its processor sets a 5% reserve with a 90-day hold. Deposits arrive 2 days after the batch closes. The practice averages 1 chargeback a month at $600, uses the default $25 dispute fee, and keeps a $40,000 operating buffer. The tool withholds $4,000 a month, and releases begin in month 4. The reserve levels off at $12,000. Add about $5,067 of sales in transit, and peak cash held is about $17,067, first reached in month 3. That is roughly 43% of the buffer, which shows as Within buffer. In month 1 alone, deposits come in about $9,067 lower than sales minus fees and chargebacks.

Now change the terms to a 10% reserve with a 180-day hold, with every other input the same. The practice now gives up $8,000 a month, nothing is released until month 7, and the reserve climbs to $48,000. With about $4,800 in transit, peak cash held is about $52,800 in month 6. That is more than the $40,000 buffer, so the tool shows a High warning. Same practice, same patients, very different cash position.

Estimates are based on published industry averages and are not a quote. Actual rates depend on card mix, ticket size, industry, and underwriting.

Seasonal swings in dental practice card volume

Many dental practices have uneven months. Patients often rush to use remaining insurance benefits before year-end, which makes November and December busier. January and February can be slower while deductibles reset. Orthodontic starts can bunch up in summer and before the school year. If your monthly volume moves like this, check the seasonal box and enter your own 12 months from last year's statements.

Seasonality matters because a reserve withholds a percentage of each month's volume, so your biggest month produces your biggest withholding. With a 90-day hold, a December tranche comes back around March. With a 180-day hold, it comes back around June. Use the monthly table to see whether a large release lands in a slow month, where it helps, or whether the busy-season buildup lines up with a large equipment payment, lab bills, or a new associate's first payroll.

What to watch for, and what a good result looks like for dental practices

Chargebacks feed directly into the reserve conversation. Dental disputes often come from patients surprised by a balance after insurance processes, patients unhappy with cosmetic results, or a card statement descriptor that shows a corporate entity name the patient does not recognize. Clear treatment estimates, signed financial agreements, and a descriptor that matches your practice name can all reduce disputes. When insurance overpays and a patient has a credit balance, refunding it promptly to the original card can head off a dispute.

Look at your statement for fees that add up alongside a reserve: higher rates on keyed-in phone payments, PCI non-compliance fees, separate gateway fees for recurring membership billing, statement and annual fees, and early termination clauses that make it expensive to leave.

A good result for most practices is a peak cash held figure comfortably inside the operating buffer, a release start month you can plan around, and a written date for the processor to review the reserve. The gated report adds a wind-down schedule showing when the last reserve dollar comes back if you stop processing, plus a side-by-side comparison of your terms against six reserve and hold combinations. To review your terms with someone, talk to a payments specialist.

Frequently asked questions