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eOffer/eMod is a tool to submit Contract Offers and Contract Modification requests to GSA Federal Acquisition Service online.


What is eMod?

eMod is a web-based application that allows MAS contractors to electronically prepare and submit contract modification requests to the Federal Acquisition Service (FAS).

When would you use eMod?

Currently, there are eight types of modification requests:

  • Additions
  • Administrative Changes
  • Cancellation
  • Deletions
  • Legal
  • Pricing
  • Technical
  • Terms and Conditions

You can choose multiple modification types for a single eMod request.

Modification Sub Type page

Who initiates it?

The contractor initiates the modification process by submitting a modification request in eMod.

What is the purpose of eMod?

To streamline and expedite the modification process and to create an electronic modification for the contract file.

Learn about the eMod process

The eMod process has five basic steps.

Step 1 - Authentication

As of March 8th, 2021, contractors do not need a digital certificate to access eMod.

Offerors will use FAS ID credentials to access eMod. FAS ID is a secure, centralized identity management system that allows contractors to access many GSA applications with one email and password. FAS ID was created as part of our overall IT modernization effort and is used to access applications, such as FAS Sales Reporting Portal (SRP), GSA Advantage Purchase Order Portal, GSA Vendor Portal, the Mass Mod Portal, eBuy, etc. Follow the instructions on the eOffer homepage to register for FAS ID, if needed.

Step 2 - Completing the Modification Request (eMod)

Contractors can choose the type of modification request they want to submit from a list of types of modification requests. Contractors then complete the required information and add supporting documents e.g. pricelist.

Step 3 - Submitting the Modification Request

Once the contractor is satisfied with the responses and supporting documents, they will click "Submit eMod Request". When this button is clicked it creates a proposal document that shows your responses. This proposal document is electronically sent to the Contracting Office along with all attachments.

Step 4 - eMod Review

Once the eMod request has been assigned and reviewed by the GSA Contracting Official they will contact the contractor with clarifications or additional requested information.

Step 5 - Award Contract

After the eMod review process is complete, the Contracting Officer(CO) will create the modification package (all the files that will make up the final contract mod). Creating the package generates an email to the contractor, notifying them to go into eMod and sign the modification package. Once the package is signed by the contractor, it generates an email notification for the GSA CO to sign the documents. After the CO has signed the documents, a notification is emailed to both the contractor and the CO. The contractor can go into eMod and download the modification documents.