Fla. Stat. § 738.402

A fiduciary shall allocate to income an amount received as a distribution of income from a trust or an estate in which the trust has an interest other than a purchased interest and allocate to principal an amount received as a distribution of principal from such a trust or estate. If a fiduciary purchases an interest in a trust that is an investment entity, or a decedent or donor transfers an interest in such a trust to a fiduciary, s. 738.401 or s. 738.608 applies to a receipt from the trust.