Can I make a one-off donation by direct debit? GiveNow Service July 25, 2018 15:11 Updated One-off donations can only be made by credit card. Donations by direct debit are only available for regular donations. Related articles How does the donation process work? Are all donations on GiveNow tax deductible? How much of my donation will go to the organisation? Can I make a regular donation? How do I update my credit card or bank details?