That depends on two factors, do you accept credit cards and ACH? Or just one of the two?
Credit cards: Your credit card processor does all the funding, any questions related to funding will be answered by your card processor.
ACH: Depends on your funding days and your ACH limit. If you haven't gone over your daily limit, you'll most likely receive your funds within 3 business days. However, if you go over your daily limit, it might take up to an additional day to fund. Of course, weekends and holidays might delay the process further.