Last Updated: May 18, 2026
HR ยท CONTRACTORS
Contractor Invoicing
To ensure timely payment, follow the steps below. Incomplete or incorrect invoices cannot be processed and may result in delays.
Invoice submission
Send invoices to finance@tierraagency.com.
Required documentation
- W9 Form (not required for non-US contractors)
- US Vendors: payment will not be processed until W9 has been received
Invoice requirements
Required details on the invoice
- Company Name or Individual Name
- Invoice Number
- Date of Invoice Submission
- Description of Services
For wire payment
- Bank Name
- Bank Address
- Bank Account Number
- Routing Number
- SWIFT (if international)
For Zelle / PayPal
- Phone Number
Payment schedule
Payments are processed on the 10th and 25th of each month.
If either of these days falls on a weekend, payment is processed on the following business day.