Fed Rate Hike Could Add $900 Million to Berkshire Income

The Federal Reserve’s September 16 quarter-point rate increase could add about $900 million a year to Berkshire Hathaway’s interest income, based on its latest reported cash and Treasury holdings. The estimate assumes short-term yields rise by the same 0.25 percentage point as the Fed’s benchmark rate.

Berkshire reported $359.2 billion in cash, cash equivalents and Treasury bills at June 30, using its measure that adjusts for unsettled Treasury purchases. The balance sheet’s gross total was about $365.5 billion. The company completed its $8.5 billion Taylor Morrison acquisition on July 24, so the June figure predates that cash outlay.

The Fed lifted its target range to 3.75% to 4%, its first increase in three years. On September 22, the three-month Treasury bill yield was 4.01%, according to Federal Reserve data. Short-term bills typically mature quickly, allowing Berkshire to reinvest the proceeds at newer rates.

The $900 million figure is an annualized estimate, not a sudden payment. Berkshire’s bills mature at different times, and their yields do not move in lockstep with the Fed’s rate. The full effect would build as the company reinvests maturing securities.

Berkshire’s recent results show how rates shape the income stream. After-tax insurance investment income fell 8.3% in the first half of 2026 from a year earlier, which the company attributed mainly to lower interest rates. The September hike came after that reporting period.

The cash also gives chief executive Greg Abel room to fund acquisitions and other investments without borrowing or selling stocks. Berkshire’s second-quarter filing said it held the money mainly in Treasury bills, while reporting $4.8 billion of share repurchases in the first half.

Investors will get a clearer read on the rate change in Berkshire’s next results. The key question is whether higher short-term yields lift investment income enough to offset cash used for acquisitions and other deployments.