My question is multi layered; first, I am doing the accounting and tax prep for a trust. Within the trust there is a land contract. One of the beneficiaries is cashing out and I need to determine the present value of the land contract to satisify the attorney and other beneficiaries. I only have the book value (starting at the inception of the trust) and have applied the payments to principal and interest as it is paid down. Where would I look for assistance with this computation? Any suggestion would be appreciated. The next step would be determining is there is a gain or loss or basis adjustment for the beneficiaries.