UPDATE 1-Ad firm Interpublic beats profit estimates as client spending grows

(Adds U.S. and overseas revenue, comparison with analysts' estimates)

Feb 14 (Reuters) - Interpublic Group's profit topped analysts' forecasts in the fourth quarter as the advertising company benefited from higher client spending.

Interpublic on Wednesday also hiked its dividend payout by 17 percent and announced a $300 million increase to its stock buyback program.

Interpublic, which owns ad agencies including FCB, McCann and MullenLowe, said revenue from the United States rose 2.2 pct to $1.29 billion in the quarter ended Dec. 31, while overseas revenue rose 4.9 percent to $1.06 billion.

Total revenue rose 3.4 percent.

Net income available to IPG stockholders fell to $316.6 million or 81 cents per share, from $317.6 million or 78 cents per share.

Excluding one-time items, Interpublic earned 79 cents per share, beating analysts' average estimate of 77 cents, according to Thomson Reuters I/B/E/S. (Reporting by Sonam Rai in Bengaluru; Editing by Sai Sachin Ravikumar)