- Incenter
- Inspired Financial
- Institute for Divorce Financial Analysts
- Integrity 1st Mortgage
- Intercontinental Exchange
- Internal Revenue Service
- International Association of Registered Financial Consultants
- International Capital Market Association
- International Retirement Resource Center
- iReverse
- JAMA
- Japan Housing Finance Agency
- Joint Center for Housing Studies
- JPMorgan Chase
- Kaiser Health News
- Key Home Lending
- Keystone Asset Management Inc.
- Kiel Mortgage
- Kiplinger