Alaska Native Claims Settlement Act Settlement Trusts Remedial Tax Act of 1999

Exempts from income taxation any such Settlement Trust electing coverage by this Act. Declares that for an electing trust: (1) no amount shall be includible in the gross income of a Settlement Trust beneficiary by reason of a contribution to the Settlement Trust during such taxable year; and (2) the ordinary requirements for taxation of trusts and beneficiaries shall not apply.

Requires an electing trust to distribute at least 55 percent of its adjusted taxable income each taxable year. Imposes a tax on a trust, in the amount of the failure, if the distribution is insufficient.

Includes in the beneficiary's gross income, as ordinary income, any distribution from an electing trust (only when the actual distribution is received). Provides that distributions from the trust will be taxable as ordinary income even if the distribution represents a return of capital. Requires tax withholding on trust distributions over a certain amount.