For more detail, including information on payments to organizations outside the US, see this article: What fees are taken out of my donation?

Both payment card processing and Pledgeling's technology fee are deducted from the charge amount, with the net being donated to the charitable organization. 

  • card processing costs are 2.9% plus 30¢ per charge. Note that this is not per donation, but per aggregate charge to the developer's card on file.
  • the technology fee is found on your developer setting page


An example:


settings:

Billing threshold: $50

Donate API Fee: 5%

Payment method: Credit card on file


Say you process 100 API donations for $1 each. Since your total donations exceed your billing threshold amount, your card will be charged for $100 at the end of the day. The fee breakdown is as follows:


Amount charged to card on file: $100.00

Payment processing fee: $100 * 2.9% + $0.30 = $3.20

Tech fee: $100 * 5% = $5

Total disbursed to nonprofit(s): $91.80


The donor may optionally pay both fee types, so that if they intend to donate $100, the amount they'll be charged is grossed up to cover the fees:


Amount charged:     $108.91

Processing fee:     $108.91 * 2.9% + $0.30 = $3.46

Technology fee:     $108.91 * 5% = $5.45

Nat disbursed to nonprofit(s):     $100.00


Displaying this option (or not) is configurable via the Donation API.