Learn what yield to call (YTC) is, how it impacts callable bond investments, and how to calculate it. The Bonds will be issued as registered bonds.This form is for general instructions that apply to all corporation tax forms. It includes a variety of topics about how to fill out your form. This calculator can help you figure out how much you can be charged based on the amount of the bond. The tax implications of purchasing a bond at a premium (for more than face value) depend on the type of bond you buy and where you live.