The primary duty of a trustee is to act in the best interests of the beneficiaries. This means that the trustee must make decisions that are in the best interests of the beneficiaries, even if those decisions are not in the best interests of the trustee or the trust itself.

The duty of loyalty is the duty of a trustee to avoid conflicts of interest. This means that the trustee cannot put their own interests ahead of the interests of the beneficiaries. For example, a trustee cannot use trust assets for their own personal benefit.

The duty of care is the duty of a trustee to preserve the trust assets. This means that the trustee must take reasonable steps to protect the trust assets from loss or damage. For example, a trustee must invest the trust assets in a prudent manner and must keep the trust assets separate from their own personal assets.

The duty to account is the duty of a trustee to provide the beneficiaries with information about the trust. This includes information about the trust assets, the trust income, and the trust expenses. The trustee must also provide the beneficiaries with an accounting of the trust assets and the trust income and expenses.

The duty to distribute income and principal is the duty of a trustee to distribute income and principal to the beneficiaries in accordance with the terms of the trust document. The terms of the trust document will specify how the income and principal are to be distributed. For example, the trust document may specify that the income is to be distributed to the beneficiaries in equal shares or that the principal is to be distributed to the beneficiaries in proportion to their needs.

The beneficiaries of a trust have the right to receive income and principal from the trust, the right to be informed about the trust, and the right to hold the trustee accountable for their actions. The beneficiaries also have the right to enforce the terms of the trust and to seek legal remedies if the trustee breaches their duties.

The beneficiaries of a trust have the duty to pay taxes on the trust income, the duty to reimburse the trustee for expenses incurred in administering the trust, and the duty to cooperate with the trustee in the administration of the trust. The beneficiaries also have the duty to refrain from interfering with the trustee's administration of the trust.

The rule against perpetuities is a rule that states that a trust cannot last for more than 100 years. This rule is designed to prevent trusts from becoming perpetual and to ensure that the trust assets are eventually distributed to the beneficiaries.

The cy-près doctrine is a doctrine that allows a court to modify the terms of a trust if the original purpose of the trust has become impossible or impracticable. This doctrine is designed to ensure that the trust assets are used for a purpose that is as close as possible to the original purpose of the trust.

A resulting trust is a trust that is created when a person transfers property to another person without specifying how the property is to be used. In such cases, the law presumes that the person intended to create a trust for the benefit of the transferor or the transferor's heirs.

A constructive trust is a trust that is created by a court order. Constructive trusts are typically imposed by courts to prevent unjust enrichment. For example, a court may impose a constructive trust on property that was acquired by fraud or duress.

A spendthrift trust is a trust that is designed to protect the trust assets from the creditors of the beneficiaries. Spendthrift trusts are typically created by settlors who want to ensure that the trust assets will be available to the beneficiaries for their support and maintenance.

A discretionary trust is a trust in which the trustee has the discretion to distribute income and principal to the beneficiaries or to accumulate income and principal. The trustee's discretion is typically limited by the terms of the trust document.

A charitable trust is a trust that is created for a charitable purpose. Charitable purposes include a wide range of activities, such as providing relief to the poor, promoting education, and advancing religion.