# Regulation Best Interest

*Regulation & Compliance — Finicade finance glossary*

Regulation Best Interest requires US broker-dealers to act in a retail customer best interest when recommending securities — above suitability.

Regulation Best Interest requires US broker-dealers to act in a retail customer's best interest when recommending securities — a standard above suitability and below full fiduciary duty. Critics argue the gap is where commission-driven sales still live, since Reg BI permits conflicts that are disclosed and mitigated rather than eliminated. Investment advisers remain subject to the stricter fiduciary standard.

**Also known as:** Reg BI, best interest standard

**Related terms:** [Fiduciary Duty](https://finicade.com/glossary/fiduciary-duty), [Suitability](https://finicade.com/glossary/suitability), [Broker-Dealer](https://finicade.com/glossary/broker-dealer), [Conflict of Interest](https://finicade.com/glossary/conflict-of-interest), [FINRA](https://finicade.com/glossary/finra)

Source: https://finicade.com/glossary/regulation-best-interest