Hi Bluesy Bluesy , 

Thanks for reaching out, recently responded to your other post here as well.  What region are you in? As Sage HR may or may not be available and is not a software product that integrates with Sage 100. 

Yes, Sage HR provides a method to update your invoicing and billing information. To change your billing and payment details for Sage HR and Payroll in Canada, simply log into your Sage HR account, go to 'Settings' by selecting your name at the top right corner, and then choose 'Billing' to view and edit your subscription and billing information.

You can find support resources and contact options on our website at www.Sage.com/Resources

Warm Regards,

Erzsi