Another way to give charities more credibility and the donors peace of mind is to use an electronic purchase order system such as Rubberstamp.io. it has been my experience that people are "inherently skeptical of charities" so by using the Rubberstamp system you could effectively manage expenses and lend complete lucidity to your funding as this system records every dime spent. Rubberstamp allows organizations to save 10% of expenses. https://www.rubberstamp.io/