If the card is a second card on an existing account, all charges will be the responsability of the main accountholder and will, in most consumer cards, be included in the general card statement.

Have you thought about a business card? Many banks offer small business cards and non-profits can qualify. Since it is a new "business" you would probably be approved on your personal credit rather than that of the non-profit. Each member of the business could then get a card and would receive separate statements and generally quarterly and year-end statements separated by cardholder and category spend. However, under a personal guarantee all charges would be the responsability of the main cardholder.

Citi offers a Citi AAdvantage Sm Business Card. Don't know of one affiliated with UA but there prolly is one.

You will have to prove the status of the business/non-profit.

Just curious - how do you get a home registered as a non-profit and why?