Pay Bill online

I am looking to have my customers be able to pay their bill on my website by using PayPal. I would like more then just the PayPal button pasted on the site. I am looking for a plugin where they can add their account/invoice number, name, payment amount, etc then hit “submit payment” and it takes them to paypal to pay.

I currently use quickbooks for all my invoicing and would like it to some how connect as well if possible.

Any plugins out there for this?
THank you