Offer your thoughts or opinion on the input financial query or topic using your financial background.

At what point is the contents of a trust considered to be the property of the beneficiary?
No, you will not have to pay taxes on the corpus (principal) of the trust distribution.  If the trust tax forms were filed correctly, you might have as much as a $9000 loss that will flow to you on the trust's termination.  Previously, the trust was supposed to file a return each year, and either claim the dividends or realized cap gains each year, and pay taxes at trust's rate, or distribute them to the beneficiaries via K-1 form. This is the best way to handle this as the trust has a steep tax table (relative high rates) vs the kiddie tax which would let you get nearly $1K/yr tax free each year as a minor.  During that time, losses net again gains, but can't be 'distributed' to the beneficiary. They are carried forward year to year. In the year the trust is terminated, that loss is not lost, but it's then passed on to the beneficiary, still via K-1. See Schedule K-1 instructions and Schedule K-1 itself.  On a lighter note, the trustee failed you. In the 16 years (Jan 2000-Dec 2015), the market (S&P) grew by 88%, with a compound 4.02%/yr return. Instead of any gain, you got a loss with a -2.75%/yr return. If this were a paid professional, you'd have a potential claim for a lawsuit. This is a reason why amateurs should not be assigned the role of trustee.  To clearly answer the mix of questions you asked - Note - it's always a good idea to seek professional advice. But, the nature of this board is that if any of my answer isn't accurate, a high ranked member (top 20 or so on this list) will likely set me straight within 24 hours.