Getting tired of typing out the full word and want to make sure the full word is spelled the same every time.

On sheet 1 (Bills) I have

A____B
Code Description
B01 Rent
B02 Power
B03 Cable

on Sheets 2-13 (Paid, Jan - Dec) I have

A____C
Code Description

I tried on sheet Jan =IF(ISBLANK(A3),"",SUMIF(Bills!A2:A27,"="&Jan!A3,Bills!B2:B26))
but it comes back with 0 instead of Rent, Power, Cable why???