How do i create customer invoices with the time to pay to be the end of the next month.

We can create a custom invoice payment term for the end of next month, Jenny. 
 

When creating customer invoices in QuickBooks Online, you have the option to select the Terms to set the due date for the invoice. See the screenshot below for your reference.

If the term you want is not available, you can create your own by following these steps:

1. From the Cog Wheel, select Account and Settings.
2. Click on the Sales menu.
3. From the Sales form content section, click the pencil icon to edit.
4. On the Preferred Invoice Terms drop-down, select + New.
5. Enter the name, like (End of Next Month).
6. Tick on Due by certain day of the month and set the day of month to 30 or 31.
7. Set the days of due date to 31 under Due the next month if issued within.
   
   
    
8. Once done, click Save then Done.

Saving it as your preferred invoice term will set it as default to all future invoices. To verify, please go back to the invoice page and enter the information. You will see the term your created from the Terms field. See the screenshot below for your visual reference.

Please know that you can always select another term if you prefer a different due date for a future invoice.

Once you're done creating invoices and sending it to your customers, learn how to record the payment in QuickBooks Online.

If you have more questions or concerns, please leave a reply below. We'd be glad to assist.