Should I be taxed on gross or net interest and dividends? I was charged fees that reduce the net income, but Turbotax does not offset these costs in its calculations.

I did not receive a 1099 INT or DIV for this income. I was provided interest and dividends earned and fees charged.  If I report the gross proceeds, I am overstating the actual income received.  Do I adjust the amount of interest and dividends by the amount of fees or report gross income to the IRS?