How do you add multiple accounts to one check?

Hi @patderon ,

You should add American Express as a credit card account to your chart of accounts. You can add/connect it in Banking. Then, you can use the Pay Down Credit Card transaction when making a payment to it. 

Good morning, @patderon. 

Thanks for reaching out to the Community. 

To clarify, are you trying to create a check and pull the funds from multiple banks? If so, QuickBooks Online doesn't have the ability to do this. You're only able to pay the check from one account. If this isn't what you mean, are you trying to create a check and assign it to multiple vendors? If so, you can split the check by category, item, and/or customer. However, the ability to assign to multiple vendors isn't available in the product. 

I can see how both of these options would be beneficial for you and your business. If you'd like, I can submit feedback to our product development team, so this could be considered in a future update. 

Please let me know if you have additional questions or concerns. I'll be here to help you every step of the way. You can always reach out to the Community or me anytime you need assistance. Take care!