Your monthly or yearly subscription invoice can be found under the ‘Invoices’ tab on your billing page.
Here you will find all your Link My Books invoices for your account. The action menu for each invoice gives you the option to download the invoice or send it to Xero or QuickBooks.
If you are using Xero, you can chose to automatically post your subscription invoice rather than manually do that.
A full guide to your billing page can be found in our billing page walkthrough help article.