Stripe's standard rate is 2.9% + .30 per transaction. This fee is paid directly to Stripe and only applies to payments processed via credit card.
As of 10/1/2019, the following information can be found on Stripe's website.
Fee discount for nonprofit organizations
Stripe offers a discounted processing fee for qualified nonprofit organizations. Stripe's custom charity pricing structure is only applicable for organizations accepting donations (e.g. not selling products or tickets), and by receiving these discounted rates, your organization will be agreeing to primarily use your Stripe account for this purpose.
If your organization has nonprofit status and will be processing 80% or more of donation payments on Stripe, email email@example.com with the following information:
• Your EIN, or a letter from the IRS designating your 501(c)(3) status
• Confirmation of the primary email address associated with your Stripe account
• Confirmation that greater than 80% of your payment volume will be tax deductible donations
Some examples of non-eligible donations include: membership fees, tuition payments, ticket sales, registration fees, and auction payments.
Current discounted nonprofit rate is 2.2% + .30 per transaction.