Retirement tax questions

TurboTax doesn't do my taxes. I DO. I gather the number, forms.. I enter them into the Turbotax. The only thing that it does is it  CALCULATES numbers that I provided. I still have to answer the questions that only I have answers to.  It replaces the accountant in some area, but does require knowledge about taxes. Again, this very little to do with the original question: why TruboTax doesn't provide IRMAA and MAGI CALCULATIONS for Medicare purposes.  It DOES have all the information (same as brokers do to calculate RDA for )?  Is it because the government didn't make Intuit do it?