Offset Now

How to Participate in MIT's Air Travel Carbon Offset Program

While avoiding travel remains one of the most effective strategies for carbon emissions reduction, we recognize that such an approach may not always be practical. Therefore, MIT has contracted with Climate Vault, a non-profit organization, to facilitate the purchase of government-regulated carbon credits for MIT travel.

two people walk on a passageway surrounded by trees
Steps to Purchase


  1. Visit Buy-to-Pay: After completing your MIT business travel, visit Buy-to-Pay (B2P), MIT’s procurement platform.
  2. Select Climate Vault: On the B2P home page, navigate to the Air Travel Carbon Offsets block and click the Climate Vault icon. (Note: This option is currently available to travelers from Sloan, SA+P, and the Kavli Institute for Astrophysics and Space Research.)
  3. Add Your Purchase to Your Cart:
    1. $50 for each domestic trip
    2. $75 for each international trip
    3. Flexible Option for a custom amount ($1 per unit)
  4. Review your Cart: Just like other requisitions, you will be prompted to fill out a "ship to" address (please use your campus mailing address and note that no physical item will be shipped) and a cost object. Note: you cannot use sponsored funds to purchase air travel carbon offsets. Purchases are non-refundable.
  5. Submit for Approval: Submit. Your requisition will be routed to the appropriate financial approvers before being routed to VPF for final processing.
  6. Collective Purchase: Purchases made by MIT travelers will be pooled periodically. Climate Vault will then use these funds to purchase and vault government-regulated carbon credits.


Payment Restrictions

Please be aware that sponsored accounts cannot be used to purchase carbon offsets due to spending limitations. We recommend using faculty discretionary accounts or general institute funds.


For questions about the program, email