U.S. investment bank and financial services company Goldman Sachs Group Inc. has agreed to acquire boutique wealth-management firm United Capital Financial Partners Inc.

Goldman Sachs has offered to pay $750 million in cash to buy United Capital.

Under the transaction, United Capital's 220 financial advisers, 22,000 clients and $25 billion worth of assets will slot into Goldman Sachs' portfolio.

Additionally, U.S. financial services company Moelis & Co. advised United Capital while law firm Kilpatrick Townsend & Stockton LLP was its legal adviser.