Overflow

Overflow provides an online giving platform for churches and nonprofits. Donors can give by card, ACH, Apple Pay, Google Pay, stock, cryptocurrency, donor advised funds (DAFs) and other methods within one system. The product line also includes Overflow Tap, tap-to-give and tap-to-connect products, Overflow AI for giving analytics and reports, and Generosity University, an education offering. Overflow states that it integrates with existing CRMs.

Customers are churches and nonprofit organizations. The company earns processing fees on gifts, with rates for card, ACH, stock and DAF transactions published on its pricing page. It also offers data migration from other giving platforms through a dedicated migration team.

Overflow was founded in November 2019 with an MVP launch, and its official launch followed in July 2020. The company is based in Silicon Valley, where it opened an office in March 2024, and it also lists an office in Birmingham, opened in February 2025. It expanded into Canada in 2022 and has acquired DEKA, Willfora and Novity. Its funding history includes pre-seed, seed, Series A and Series B rounds. Open roles are remote and span customer success, engineering, product, revenue, partnerships and operations.

Product: Church and nonprofit online giving platform with card, ACH, stock, crypto and DAF acceptance, Overflow Tap, Overflow AI analytics and migration services.