# COMAR Title 21 — State Procurement Regulations

## Subtitle 06 — Contract Formation and Award

### Chapter 09 — Invoicing, Payment, and Interest on Late Payments

#### Regulation .03 Receipt of Invoices.

*COMAR 21.06.09.03*

For the purposes of determining a payment due date and the date on which interest will begin to accrue if a payment is late, an invoice shall be deemed to be received:

A. For invoices that are mailed, when a proper invoice is received by the agency, as of the date the agency annotates the invoice with the date and time of receipt; or

B. For invoices electronically transmitted, on the date the transmission is received by the agency, or the next business day if received after 5 p.m. Eastern Time.