Mainstream BNPL and installment financing some med spas plug in at checkout
A trusted, low-friction mainstream BNPL that pays you up front and carries the risk — but it is general-purpose, not aesthetics-built, can't finance memberships, and hides its merchant fee behind a negotiation.
Affirm is one of the largest consumer point-of-sale lenders in the United States, best known for retail and e-commerce installment financing. A handful of med spas adopt it because it does the two things owners most want from patient financing: it runs a soft credit pull with an instant decision, and it pays the practice up front (typically by ACH within one to three business days) while Affirm assumes the default and fraud risk on the loan.
It is not an aesthetics-built product. Affirm offers Pay-in-4 at 0% APR plus longer monthly installment loans that range from roughly 10% to 36% APR, with amounts up to about $17,500. There is no med-spa marketing, no concept of financing a membership or recurring treatment plan, and integrations into the aesthetic stack are indirect: it appears natively inside Zenoti Payments and reaches Mangomint through that platform's Stripe integration. For a clinic that already lives in one of those systems and wants a trusted, low-friction consumer brand at checkout, Affirm is a reasonable add-on rather than a category-leading financing partner.
Ideal customer
Med spas already on Zenoti or a Stripe-based POS that want a trusted mainstream BNPL brand at checkout for one-off elective treatments, and that don't need to finance memberships or recurring plans.
Affirm is a mainstream, retail-first installment lender that a minority of med spas bolt onto checkout. Its appeal is mechanical rather than aesthetic: a soft credit pull with an instant decision means patients can qualify without a hard inquiry, and the practice is funded up front (ACH in one to three business days) while Affirm absorbs the default and fraud risk. For an owner who simply wants a trusted consumer brand to spread the cost of a single elective treatment, that is a clean value proposition.
What Affirm is not is a financing product designed for aesthetics. There is no med-spa marketing, no way to finance a membership or a recurring treatment plan, and the loan ceiling (around $17,500) trails the dedicated medical lenders that routinely underwrite larger plans. It reaches the aesthetic stack indirectly — natively inside Zenoti Payments and through Stripe for platforms like Mangomint.
Choose Affirm if you already run Zenoti or a Stripe-based POS, want a recognizable BNPL brand for one-off treatments, and value being paid up front with no default risk. Look elsewhere if memberships or recurring plans are central to your model, if you need higher loan caps, or if transparent, comparable merchant pricing is a deal-breaker. Negotiate the discount fee hard and disclose patient APRs plainly.
By Med Spa Vendor Hub Editorial Team. Last reviewed June 29, 2026. Independent editorial review — how we score.
Affirm pays the practice up front and charges a per-transaction merchant discount fee that is negotiated per merchant rather than published. Industry norms sit in the mid-single-digit percent range, and 0% promotional financing carries a higher merchant fee. Patient APR runs 0% on Pay-in-4 and roughly 10%–36% on monthly installment loans, up to about $17,500.
Pay-in-4
0% APR to patient
Four interest-free installments; merchant pays a discount fee and is funded up front.
Monthly installments
~10%–36% APR to patient
Longer-term loans up to ~$17,500; merchant discount fee negotiated, higher for 0% promotions.
Pricing is researched from public sources and verified periodically; confirm current rates with the vendor.
Independent ratings from third-party review platforms, cited with sources. These are not our score.
A vendor-neutral guide to choosing patient financing for a med spa—covering why financing drives conversion, the six provider models, the deferred-interest trap, merchant economics, and how to match a provider to your patients.
Patient financing has no subscription - the practice pays a merchant discount fee (a % of each financed sale) and the patient pays APR or deferred interest. Here's a transparent 2026 breakdown of real merchant fees and patient rates by lender.
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