CRUT is the abbreviation of charitable remainder unitrust. It is an irrevocable trust under which the beneficiary who cannot be a charitable beneficiary receives a fixed percentage, of the net fair market value of the trust on an annual basis. The fixed percentage should not be less than 5% of the trust's annual value. The annual income paid to the beneficiary must be either for life or for 20 or fewer years. Depending on the value of the trust assets, the yearly payment will increase or decrease. Additional contributions can be paid into the trust after it has been created.