#  Paying your Bill 

 



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### **Harvard Labs - Internal billing (33-digit Harvard Billing Code)**

- Invoices for internal Harvard Labs, paying via a 33-digit Harvard billing code, are managed through PPMS with departmental grant managers.

### **External Labs**

- Invoices for External labs or Harvard labs billing externally (e.g. HHMI) are sent from Harvard Accounts Receivable and may be paid online or by mail (see below for details).
- External service projects require a PO before work begins.



 

 ### CMI Billing Address:

Harvard University   
Central Accounts Receivable   
P.O. Box 4999   
Boston, MA 02212



 

 ### Harvard Accounts Receivable

[ar\_customers@harvard.edu](mailto:ap_customerservice@harvard.edu)

[Pay a Bill - AR portal](https://oc.finance.harvard.edu/how-to/accounts-receivable/pay-an-ar-bill)

question about a bill:  
Contact: Mack Carroll  
[Mackenzie\_Carroll@hms.harvard.edu](mailto:Mackenzie_Carroll@hms.harvard.edu)