Browser requirements

Use a supported web browser to utilize BILL. We strongly recommend using the latest version of one of the following browsers:

  • Google Chrome
  • Microsoft Edge
  • Mozilla Firefox
  • Safari

Using an older version of a supported browser or an unsupported browser may cause BILL not to work as designed. The ability to continue using our service may be available, but the speed and performance will be impacted.

For mobile devices, BILL offers native apps for iOS and Android. Alternatively, log in to BILL using the web browser on any mobile device, but we cannot guarantee the quality of performance on all mobile devices or browsers equally.


  • While you are able to use BILL on Internet Explorer currently, it is not an optimized experience. For a better experience, use Microsoft Edge.
  • Important: As of 10/16/2020, BILL will no longer work with Internet Explorer. Please upgrade to one of the supported browsers listed above.

Untrusted session

If you get an untrusted session error when you are adding a bank, or requesting a multi-factor authentication(MFA)/2-step verification code:

  1. Log out of BILL
  2. Clear your browser's cookies/cache
  3. Use Chrome as your browser if at all possible
  4. Log back into BILL

If you continue getting the error, please contact Customer Support by selecting Contact Us at the top of this page.