Buffett is scheduled to appear on CNBC for 2 hours starting at 6 a.m. Central.
The interview will be Buffett's first extended one since he finished radiation treatments for prostate cancer last month.
Buffett is Berkshire Hathaway's chairman and chief executive. The 82-year-old has said he feels good and his cancer is not considered life-threatening because it was caught early.
Berkshire owns roughly 80 subsidiaries, including clothing, furniture and jewelry firms. Its insurance and utility businesses typically account for more than half of the company's net income. It also has major investments in such companies as Coca-Cola Co. and Wells Fargo & Co.
Berkshire Hathaway Inc.: www.berkshirehathaway.com