A CRT lets you convert a highly appreciated asset (like stocks or investment real estate) into a lifetime income without paying capital gains tax when the asset is sold. It also reduces your income and estate taxes, and lets you benefit a charity that has special meaning to you.
With a CRT, you transfer the asset to an irrevocable trust. This removes it from your estate. You also get an immediate charitable income tax deduction.
The trust then sells the asset at market value, paying no capital gains tax, and reinvests in income-producing assets. For the rest of your life, the trust pays you an income. Since the principal has not been reduced by capital gains tax, you can receive more income over your lifetime than if you had sold the asset yourself. After you die, the trust assets go to the charity you have chosen.