How do I create a supplier payment on account? Payment for a pro-forma invoice?

Hello there, @adezyanian. I want to ensure you'll be able to create a payment for your supplier in QuickBooks Online (QBO).

Thanks for sharing information about your concern. To help you with this, you can simply use the Pay bills feature to create a payment for your supplier. I'll guide you on how:

1. In your QBO account, select the +New button and choose Pay bills.
2. Check the box of the bill you need to pay. 
3. Enter the amount in the Payment field.
4. When done, select Save & close. 

For reference, check out this article: Enter and manage bills and bill payments in QuickBooks Online.

Also, with QBO its easy to bill a customer for an expense. To do so, simply select the Billable checkbox and enter their name in the Customer field. For the detailed guide, read this link: Enter billable expenses.

I'll be always here ready to lend a hand if you have any other concerns about paying your supplier in QBO. Have a great day ahead and stay safe. 

Thank you for your reply and notes. Unfortunately this is doesn't help me as I want to apply a credit on the supplier account and not to any invoices.

Thank you for your email. Unfortunately this doesn't work for me as I want to apply a credit on the supplier account and not apply a payment against any supplier invoices.

Thanks for getting back in here, @adezyanian. Allow me to chime in and provide further information to create supplier payment. 

We can apply credit to any transactions, either to bills or invoices.

Here's how:

1. Select the (+) New menu and choose Vendor Credit.
2. Enter the vendor name and the credit details for the vendor. Make sure the amounts are positive.
3. Click Save and close.

You can use the vendor credit as payment for an open bill. Here's how you can apply it to the open bill:

1. Open the bill you want to pay.
2. Click the Make payment button.
3. In the Bill Payment window, the bill is marked in the Outstanding Transactions section.
4. Proceed to the Credits section and mark the vendor credit.
5. Click Save and close.

Additionally, I'm sharing some articles you can utilize in the future to help enter refunds for customers or suppliers and help enter bills:

• Record a customer refund or supplier refund in QuickBooks Online
• Enter and manage bills and bill payments in QuickBooks Online

Feel free to get back to this thread if you have further questions about applying credits to a supplier. I'm always around to help. Keep safe!

Create a dummy supplier invoice for 0.01p - make an expense for your payment on account and allocate the payment to the 0.01p with the remainder being a credit on the account  - go back and delete the dummy invoice. POA should now be there 

How do I post a payment on account on a suppliers account? Its not a proforma, or a credit note?

https://quickbooks.intuit.com/learn-support/en-uk/banking/how-do-i-post-a-payment-on-account-on-a-su...

Hope this helps.