Dental practices run three parallel payment systems — insurance reimbursement (no card processor involved), patient co-pays and self-pay (standard card processing), and patient financing (CareCredit, Sunbit, or in-house plans). Each has different cost structure and chargeback exposure. Getting all three right is how high-volume practices save $10,000–$40,000/year.
| Payment Stream | Who Pays | Fee to Practice | Chargeback Risk | Optimization Lever |
|---|---|---|---|---|
| Insurance reimbursement | Insurance company (electronic) | $0 processing; insurance writes off the delta | None (not a card transaction) | Clean coding and timely filing; not payment processing |
| Patient co-pay / balance due (card) | Patient by card at or after appointment | 2.6%–3.5% per transaction | Medium — "insurance covered more than expected" disputes | Interchange-plus saves 0.5%–1.2% vs flat-rate for this volume |
| Self-pay (no insurance) | Patient by card, ACH, or financing | 2.6%–5% (card) or 4%–13% (financing) | Medium-high — "treatment outcome" disputes | Financing lowers card fee but adds merchant discount; ACH cheapest for large balances |
| In-house payment plan (ACH) | Patient by recurring ACH | 0.5%–0.8%, max $5 | Low — specific to authorized recurring debit | ACH is lowest-cost option for large multi-month treatment balances |
| Patient financing (CareCredit/Sunbit) | Financing company (same day) | 4%–13% merchant discount | None (practice is paid immediately) | Shorter promotional periods = lower merchant discount rate |
Patient financing enables case acceptance for high-dollar procedures — implants ($3,000–$6,000), full-mouth restorations ($15,000–$50,000), Invisalign ($3,500–$8,000). Without financing options, most patients decline treatment they can't pay upfront. The cost is the merchant discount rate — what the practice pays to receive payment immediately.
| Option | Merchant Discount Rate | Approval Rate | Promo Periods | Best For |
|---|---|---|---|---|
| CareCredit (Synchrony) | 4%–13% depending on promo length | ~60–70% of applicants | 6, 12, 18, 24 months (deferred interest) | Patients with established credit wanting 0% promotional period |
| Sunbit | 5%–8% | ~85% of applicants | 3–72 months (simple interest) | Patients CareCredit declines; thin-file or impaired credit |
| Proceed Finance | 0%–6% | ~70–75% | Various (BNPL and installment) | Practices wanting lower merchant cost with competitive approval rates |
| LendingClub Patient Solutions | 4.99%–7.99% | ~60–70% | 24–84 months | Large-balance long-term plans (orthodontics, full-arch implants) |
| In-house payment plan (ACH) | 0.5%–0.8%, max $5/transaction | 100% (practice sets terms) | Practice-defined; typically 3–12 months | Established patients; practices with low collection risk tolerance |
CareCredit's promotional financing is "deferred interest" — if the patient pays off the full balance within the promotional period, no interest is charged. If even $1 remains at the end of the period, all accrued interest at the standard rate (26.99% APR) is charged retroactively to the original purchase date. Patients frequently misunderstand this and dispute the charge as misrepresentation when they see a large interest charge. The dental practice doesn't receive that interest (CareCredit does), but the chargeback attempt can still disrupt the practice. Train front desk staff to explain deferred interest clearly at point of enrollment.
In-house payment plans via ACH are cheaper for the practice but transfer collection risk back to the practice. The break-even is:
In-house plans make sense when: the practice has a long-term patient relationship with strong payment history, the procedure is for existing (not new) patients, and the practice has a clear collections process for failures. Third-party financing makes sense for new patients, large treatment plans, and situations where the practice wants guaranteed payment upfront.
The most common dental chargeback scenario: a patient is quoted an estimated co-pay before treatment, the insurance processes differently than estimated, and the patient is billed more than expected. The patient disputes the card charge claiming "amount was more than agreed."
What you need to win these disputes:
A front desk team member who tells a patient "your insurance should cover about 80%, so you'll probably owe $200" without getting a signed financial agreement has created a verbal contract at that $200 number. When the insurance pays at 60% and the actual patient responsibility is $450, the patient's dispute that they were told $200 carries significant weight — and without a written document showing the insurance-estimates-are-not-guarantees language, the processor may side with the patient. Every estimate must be in writing, signed, and include the standard variance language before treatment begins.
Understanding what typical dental transactions actually cost at different processing methods:
| Transaction Type | Typical Amount | Card Flat-Rate (2.9%+$0.30) | Interchange-Plus (~2.1%+$0.10) | ACH (0.8%, max $5) |
|---|---|---|---|---|
| Routine cleaning co-pay | $25–$75 | $1.03–$2.48 | $0.63–$1.68 | $0.20–$0.60 |
| Composite filling co-pay | $80–$200 | $2.62–$6.10 | $1.78–$4.30 | $0.64–$1.60 |
| Crown (patient portion) | $400–$900 | $11.90–$26.40 | $8.50–$19.00 | $3.20–$5.00 (capped) |
| Single tooth implant (self-pay) | $3,000–$5,000 | $87.30–$145.30 | $63.10–$105.10 | $5.00 (capped) |
| Invisalign (full treatment, self-pay) | $4,000–$7,000 | $116.30–$203.30 | $84.10–$147.10 | $5.00 (capped) |
| Full arch implants | $20,000–$40,000 | $580.30–$1,160.30 | $420.10–$840.10 | $5.00 (capped) |
A $25,000 full-arch implant case paid in full via card at 2.9%+$0.30 costs $725.30 in processing fees. Via ACH: $5.00. The savings on a single case is $720. A practice that converts 20 large-case self-pay patients per year from card to ACH saves $14,400/year. ACH settlement takes 1–3 business days, which is irrelevant for these cases. The only friction: ACH requires a bank account number and routing number — slightly more information than a card swipe — but most patients are willing to provide this for large transactions.
Dental practices using software (Dentrix, Eaglesoft, Open Dental, Curve) should choose a processor with a native integration to avoid double-entry and reconciliation overhead.
| Software | Native Payment Integration | Third-Party Integration | Notes |
|---|---|---|---|
| Dentrix | Dentrix Payments (via Worldpay) | Stripe, Clover via bridge | Worldpay's rates not published; negotiate; alternative integrations require more setup |
| Eaglesoft | Eaglesoft Payments (via Worldpay) | Limited | Same as Dentrix — same parent company (Henry Schein); Worldpay not interchange-plus by default |
| Open Dental | Open Dental Pay (Stripe-powered) | Multiple options via PayConnect | Most flexible; Stripe integration supports ACH; interchange-plus available via some integrations |
| Curve Dental | Built-in payments (via Stripe) | Limited | Cloud-native; Stripe rates apply; ACH available |
| Standalone (no PMS) | N/A | Square, Stripe, Helcim | Manual reconciliation required; fine for small practices; Helcim best for interchange-plus |
Henry Schein's dental software (Dentrix, Eaglesoft) uses Worldpay as the integrated payment processor. The default rate offered to dental practices is typically flat-rate, not interchange-plus. At $80,000/month in patient card payments, the difference between flat-rate 2.9% and interchange-plus ~2.1% is $640/month — $7,680/year. Dentrix users who haven't specifically negotiated interchange-plus pricing are likely paying flat-rate without realizing a better option was available. Ask your Worldpay/Henry Schein rep explicitly about interchange-plus pricing.
Assumes: 60% insurance co-pay card, 30% self-pay card, 10% self-pay ACH. Average co-pay $175, average self-pay ticket $600.
| Monthly Card Revenue | Flat-Rate (2.9%+$0.30) | Interchange-Plus (~2.1%+$0.10) | Optimized (IP + 10% ACH) | Annual Savings vs Flat-Rate |
|---|---|---|---|---|
| $20,000 | $8,532/year | $6,240/year | $5,412/year | $3,120/year |
| $40,000 | $16,944/year | $12,360/year | $10,680/year | $6,264/year |
| $80,000 | $33,768/year | $24,600/year | $21,240/year | $12,528/year |
| $150,000 | $63,060/year | $46,080/year | $39,780/year | $23,280/year |
Dental offices process under MCC 8021 (Dentists and Orthodontists). This healthcare category has slightly higher interchange rates than general retail (1.75%–2.20% on standard consumer cards), which is why interchange-plus has a higher per-transaction impact for dental practices than for lower-interchange categories.
Most practices should offer both. CareCredit (4%–13% merchant discount) has better promotional period options for qualified patients. Sunbit (5%–8%) approves 85%+ of applicants and fills the gap for patients CareCredit declines. Use CareCredit as the primary option; Sunbit as the fallback. Together, they cover nearly all patients who need financing.
Yes. To win: pre-treatment financial agreement with insurance variance language (estimates are not guarantees), treatment records showing service was delivered, and EOB from the insurance company. The pre-treatment agreement is essential — verbal estimates without written acknowledgment are nearly impossible to defend in a chargeback.
Yes for in-house payment plans. ACH saves $60–$140 per patient on a $5,000 treatment split into 5–6 monthly payments vs card billing. Use ACH for established patients with payment history. For new patients or large balances without a relationship, third-party financing (CareCredit, Sunbit) transfers the collection risk to the lender.
For practices on Dentrix/Eaglesoft: negotiate interchange-plus with Worldpay or explore Open Dental integration with Stripe for more flexibility. For practices on Open Dental or Curve: Stripe integration with ACH enabled is well-suited. For high-volume practices ($80K+/month in patient payments): Helcim's interchange-plus saves $7,000–$15,000/year vs flat-rate.
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