Problem

Coil addresses the cost and fragility of card-based payments, especially for subscription businesses. Recurring credit-card charges are reportedly declined 15% of the time and account for 48% of churn, making failed payments a major source of involuntary or delinquent customer loss. Card processing fees also reduce merchants’ margins. The clearest use case is recurring billing: helping subscription businesses retain customers who would otherwise churn after a declined card, while lowering payment costs.

Product / Service

Coil is an embedded pay-by-bank payment method. Its initial product is a “Pay with coil” button that merchants can add to an existing checkout flow for one-time or subscription payments. Instead of using a credit card, customers pay through ACH or RTP bank transfers; on their first use they securely link a bank account through Plaid, and returning customers can authenticate with an SMS or email verification code. Coil handles the underlying payment complexity and is designed to avoid the account numbers, routing details, and microdeposits associated with traditional ACH experiences.

The benefit is a faster, simpler bank-payment experience for customers and potentially lower processing costs and less payment-related churn for merchants. Coil’s stated longer-term ambition is to become a default payment method for a post-credit-card payments environment.

Market

Coil competes in fintech payments, specifically the pay-by-bank, open-banking, ACH, and real-time-payment infrastructure market for merchants. Its closest competitive set includes established payment providers that offer bank-based or recurring payments, including Stripe, GoCardless, PayPal, and Trustly. Stripe supports ACH Direct Debit and instant bank payments, GoCardless offers ACH debit, and Trustly markets recurring payments that connect directly to a customer’s bank account, making these products adjacent or direct alternatives depending on the merchant’s checkout and billing needs.

Coil appears to be an early-stage company rather than a scaled payment processor. Y Combinator lists it as founded in 2022, part of Winter 2023, active, and operating with a one-person team. Public evidence in the research does not establish customer count or revenue: one company-data source says revenue and customers have not been confirmed and describes the company as bootstrapped, while a LinkedIn result reports US$500,000 from investors. The most defensible conclusion is that Coil has early accelerator and product-launch traction but no publicly demonstrated commercial scale, and the available evidence is insufficient to label it definitively pre-revenue.