A Disabled Discretionary Trust within the Will is a trust that is established in a person's will for the benefit of specific disabled beneficiaries. It is a type of discretionary trust, which means that the trustees have discretion over how and when the trust assets are distributed to the beneficiaries.

The main advantage of a Disabled Discretionary Trust within the Will is that it provides for the care of disabled beneficiaries and allows them to continue receiving means-tested benefits, as the trust assets will not be counted as their own. This can help disabled beneficiaries avoid losing their benefits due to receiving a lump sum of money.

In addition, disabled beneficiaries can benefit from more favourable tax treatment, as they may be entitled to certain tax reliefs and exemptions.