A promotion redistributes the cost of financing
A merchant-funded offer can reduce the customer’s stated financing cost because the merchant pays the provider through a discount or program fee. The lender receives that support in exchange for funding, servicing and bearing agreed exposures. The merchant hopes additional completed sales or larger purchases earn enough to justify the subsidy. Each participant therefore needs a different profitability measure.
Synchrony’s filing describes merchant fees associated with promotional financing as a commercial example. True zero-interest financing and arrangements have different consequences if the customer has not paid by the relevant deadline. Regulation Z addresses finance charges and, specifically in section 1026.16(h), advertising for covered deferred-interest plans. The actual agreement and disclosures determine the offer. [1][2][4]
Illustrative unit economics
Suppose a $1,000 purchase receives six months of promotional financing. The lender expects a merchant discount of $80, funding costs of $25, servicing and fraud costs of $15, and an expected credit loss of $30. Before overhead, the simplified contribution is $10. If default losses rise to $50, contribution becomes negative $10. These are hypothetical assumptions, not reported company economics.
For the merchant, the fee can be justified by higher conversion, average ticket size or incremental sales, but only if the uplift exceeds discount cost, returns and cannibalization. For the lender, outcomes depend on repayment after promotion, customer selection, utilization and loss severity. A promotion with long duration can create higher funding cost even when nominal is zero.
A merchant needs incremental profit, not just financed volume
Hypothetical example: a merchant pays an 8% financing fee on $1 million of promotional sales, or $80,000. If a credible comparison suggests only $200,000 of those sales were incremental and those sales carry a 30% contribution margin before the financing fee, incremental contribution is $60,000. After the $80,000 fee across all financed sales, the simplified result is negative $20,000 before other effects.
This does not establish that the promotion failed: retention, product mix or later purchases may add value. It does establish what would need evidence. Charging the fee only against incremental sales in the analysis would overstate returns when the merchant actually pays it on the entire financed volume.
Customer completion includes repayment and resolution
Analysis: compare what the customer must pay each month to achieve the advertised outcome with the contractual minimum and the customer’s actual payment behavior. A low required payment may not retire a balance before a promotional deadline. Clear reminders, payment allocation and a workable dispute process are part of the product experience, not merely administrative details.
Returns and cancelled work also affect the result. Track whether credits reach the financing account promptly and whether the merchant, servicer and customer agree on the remaining balance. Provider revenue created by customer misunderstanding is a different business proposition from revenue supported by repeat satisfied use.
What would support a durable program
A convincing assessment reconciles merchant incremental contribution, lender net returns and customers reaching the repayment outcome they understood. Compare like products and periods, including funding changes, subsidy rates, cancellations and service costs.
Approval and checkout conversion are useful intermediate measures. The complete result is an economically sustainable sale, delivered as promised, with financing the customer can understand and manage.
Sources
- Synchrony Financial — 2025 Form 10-KFiling / reportBack to text: ↑
- Regulation Z §1026.4 — finance chargeOfficial textBack to text: ↑
- CFPB — Consumer Credit Card Market Report 2025Official source
- CFPB: Regulation Z §1026.16(h), deferred-interest advertising provisions; reviewed September 30, 2026Official textBack to text: ↑