Welcome to Harbor
Anne Arundel County launched Harbor on 7/6/26 to modernize how we work with suppliers. This new system replaces the Port system and become the single platform for doing business with the County.
- Faster, more predictable payments
- Easier invoice submission and tracking
- Centralized supplier information (one place to manage your account)
- Improved communication with the County
- Reduced paperwork and duplication
- More efficient use of taxpayer funds
- Stronger supplier partnerships
- Increased transparency in County operations
- Better service delivery to residents
Purchase Orders Issued Before 7/1/2026 that Include Retainage
Any Invoice for a purchase order issued before 7/1/2026 that includes retainage needs to be emailed to your Department Contact, which will be given to you by your Project Manager. Invoices with retainage entered through the supplier portal may reflect as canceled and will be re-entered by your Department Contact.
Getting Started
Learn more about the Harbor system and the information you will need to gather prior to registration.
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System HelpAccess help guides that describe how to perform specific functions in the system.
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Supplier PortalAccess the Supplier Portal where you can register and begin conducting business with the county.
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Frequently Asked QuestionsView the answers to common questions about Harbor.
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Support RequestEnter a request for support with a question or issue.