New S Corp

Hi! my partner and I recently opened up an S Corp. We are opening a business bank account and getting our first direct deposit on Wednesday and our CPA isn’t very helpful when it comes to answering questions. I just want to know what is considered business expense that can be paid using the business debit card?

For example, we use our cars to go to meetings and meet with potential clients. I know you can write it off on your taxes at the end of the year but can you use the business card to pay for gas? we do also use it for personal use sometimes but mostly for work. Or would we have to pay ourselves and then use that money to pay for gas? We are hoping to not have to pay ourselves or deduct salaries for 6 months. The income we receive the first 6 months will stay in the account to help us build savings.

Could we get some advice? 🙏🏻