Taxes on Social Benefits

This not a question, just a statement to be cautious and double check to be sure TT calculated tax on Social Security benefits.  I didn't and was expecting a return,  but IRS discovered an error in TT calculated tax on SS benefits and I now owe IRS.  In checking the SS Benefits Worksheet, the error appeared in the TT calculation on line 17 of the worksheet, (Multiply line 1 85% (0.85)).  Well, in my case the amount TT calculated on line 17 was only 26.5% instead of the full 85%.  So please be cautious and double check your tax on SS  benefits to ensure correctness,