A letter of instruction is a cheat sheet for anyone involved in settling your affairs. Unlike a will, this letter has no legal authority.A letter of instruction can complement an estate plan and provide your loved ones with additional details about your assets and wishes after death. Writing a letter of instruction can help expedite the estate planning process. A letter of instructions provides important financial and personal information to survivors after death. Explore realworld legal case examples of Cook Islands Trusts, showcasing how they protect assets and provide financial security. How to set up a Cook Islands trust. Gives step-by-step instructions and information about asset protection from lawsuits and divorce. Reminder: Exemptions appear on your second installment tax bill issued later this year. To learn more about how the property tax system works, click here.