WILL SOMEONE PLEASE EXPLAIN TO ME WHY IS IT GIVING ME AN ERROR ON LINE 18 OF THE SE FORM TO CALULATE THE PORTION ON LINE 3 THAT CAN BE ATTRIBUTED TO MARCH 27TH- DEC.

IS THIS FOR ESTIMATED TAX PAYMENTS? IS IT A CREDIT FOR SELF EMYLOYED PEOPLE TO OFF-SET THE PORTION OF SELF EMPLYMENT TAX? PLEASE HELP! 

HOW WOULD I KNOW WHAT INCOME IS AFTER MARCH? SOME CLIENTS JUST GIVE ME SPREED SHEETS OF TOTALS.

THANKS!!