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Frequently Asked Vendor Questions

I am a new vendor. What is required to process my invoice?

Chesapeake has several invoice requirements. To ensure your company is providing all necessary information, please read our Invoice Compliance document and our Chesapeake Invoice Format Memo.


Who do I contact for questions about my 1099?

Call the 1099 Inquiry Line at 877-CHK-1GAS (877-245-1457) or send an email to


What is Electronic Invoicing?

Electronic Invoicing (EI) is how Chesapeake and its vendors are able to exchange invoice-related data via the Internet. Oildex is the Application Service Provider that facilitates this company to company data interchange.


What are the benefits of EI to vendors?

The biggest benefit is that you have the ability to confirm Chesapeake received your invoice. It also allows invoices to be processed in a more timely manner.


How do we get started on EI?

Registration and setup are required. To determine if Electronic Invoicing is right for you, review the Electronic Invoicing On-Boarding Information document.


Can I set up direct deposit?

Chesapeake is now offering an electronic funds transfer (EFT) option for its vendors. EFT payments are only available for accounts drawn within the United States. If you elect to receive electronic payments, you will no longer receive your payment detail by mail. You may access the detail on-line at and also request to have the detail emailed directly to you. Please complete the attached Vendor Direct Deposit Enrollment Form with a voided check, and return to the address provided. If you have any questions about the enrollment process, please contact our Accounts Payable department at 877-CHK-1GAS (877-245-1427) or email at


How often are payments made?

Checks and direct deposits are created each business day for Accounts Payable.


Who do I contact if I receive payment for an amount different than what was billed?

Please check the Invoice Discrepancies information available for a brief explanation of payment discrepancies. If the information given is unclear or you would like to discuss this matter further, please contact our Vendor Relations team at or call them at 877-CHK-1GAS (877-245-1427).


How do I resubmit an electronic invoice that was incorrect or not paid?

If you have invoices that need to be resubmitted to Chesapeake for any reason, please contact the Vendor Relations team at or 877-CHK-1GAS (877-245-1427). They will instruct you on the correct procedure to resubmit the invoice. Original invoices and invoice numbers should not be altered, and resubmitted invoices through Oildex will not be paid.


What are Stale dated checks?

Our accounts payable checks are not negotiable after 90 days. If you did not deposit your check within that time frame, we must re-issue the check. Please contact our Vendor Relations team at or 877-CHK-1GAS (877-245-1457).


Why is backup withholding deducted from my AP check?

A valid Tax Identification Number or Social Security Number must be provided to Chesapeake for reporting and identification purposes. If it is not, the Internal Revenue Service requires withholding of 28% of all payments (30% for foreign residents) until the information is provided.

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