Can I make a one-off donation by direct debit? GiveNow Service November 12, 2018 15:48 Updated One-off donations can only be made by credit card. Donations by direct debit are only available for regular donations. Related articles How much of my donation will go to the organisation? How does the donation process work? Can I make a regular donation? Are all donations on GiveNow tax deductible? How do I update my credit card or bank details?