Paying for your subscription on time is important, and I understand your concern, @JP232.
In QuickBooks Online (QBO), subscription payments are automatically charged to the billing information you’ve provided once the due date arrives. Since it operates as a subscription-based service, there isn’t an option to manually initiate a payment.
To ensure the payment goes through, make sure that your billing information is accurate and up-to-date so your account can be charged on the upcoming due date.
For more details regarding billing and subscription management, refer to this guide: Manage billing, payment, and subscription information.
If you'd like to review your QBO payment history, you can refer to this helpful article: View your payment history in QBO.
Feel free to comment below if you have any other concerns about subscriptions or billing.