Debt Service
The amount of principal and interest required to be paid on an issue of bonds.
A Maturity schedule in which the combined annual amount of Principal and Interest payments remains relatively constant over the life of a Bond Issue. Some state laws require Level Debt Service for certain transactions.
The amount of principal and interest required to be paid on an issue of bonds.

The period of time (often set forth in the tax certificate), during which a particular category of proceeds may be invested in higher yielding investments without the issue being treated as arbitrage bonds under Section 148 of the Code.