April brought a big surprise – unexpectedly robust individual income tax receipts of $483 billion, a $103 billion, or 27%, increase over April 2023, according to the Congressional Budget Office. Uncle Sam can use the revenue, but even a $100 billion surprise will hardly make a dent in ongoing massive federal deficits. But why was it unexpected?

The increase included a $77 billion, or 26%, increase in final payment of taxes paid in estimated installments throughout the year, so-called non-withheld taxes. A large portion of non-withheld taxes are taxes on capital gains.













