Is the instant deposit option available for a partial payment that our client submitted today via credit card?

Hello there, affinitydoor.

Yes, the instant deposit option is available for the partial payment that your client submitted today via credit card. You can request a one-time instant deposit for this payment.

To receive your funds on the same day, ensure that you make your requests before 3:00 PM PT. Any remaining payments after 3:00 PM PT will be processed the following day. You have the option to request a one-time instant deposit at any time. 

1. To do this, navigate to the Sales section and then select Deposits. 
2. In the Instant Deposit section, choose the Get it now option.
3. Review the total amount and associated fees, then proceed by selecting Get it now.
4. The deposited funds should appear in your bank account within minutes. You will receive an email confirmation once the money has been successfully deposited.
    

You can check this article for more details: Get instant deposits in QuickBooks Online.

Please let me know if you have more concerns about this. I'll be around to help.