Your annuity can be made up of one or two parts, depending on the type of annuity you are receiving. The first part, tier I, is included in all annuities.
The second part, tier II, is not included in your annuity computation if you are a remarried widow(er), surviving divorced spouse, divorced mother/father or a parent, if other survivor annuitants are entitled or potentially entitled to a widow(er), surviving divorced spouse or child benefit.