What Is a Letter of Instruction and Why Does Every Will Need One?

Most people focus on writing a will and forget one critical document. A letter of instruction fills the gaps your will cannot. It guides your loved ones through one of the hardest moments of their lives.

A letter of instruction is an informal, personal document that accompanies your will. It provides your family with practical guidance on where to find your assets, how to handle your affairs, and what your final wishes look like in plain language. Unlike a will, a letter of instruction does not require witnesses, notarization, or court approval. It simply exists to make things easier for the people you leave behind.

Your will handles the legal transfer of property. Your letter of instruction handles everything else. It answers the urgent, everyday questions your grieving family will have during a deeply difficult time. Together, these two documents form a complete and thoughtful estate plan. Here are five essential things you need to understand about a letter of instruction.

1. A Letter of Instruction Is Not a Legal Document, But It Is Powerful

A letter of instruction carries no legal weight on its own. Courts do not enforce it. Judges do not read it. But that does not make it unimportant. Your family will rely on it immediately after your death, often before the will ever enters probate. It tells them where your bank accounts are located, where your insurance policies are stored, and who your attorney and accountant are. That kind of practical information is invaluable when emotions are high and time feels short. A legal document transfers your assets. A letter of instruction transfers your knowledge.

2. A Letter of Instruction Should Cover These Key Areas

Your letter of instruction should be thorough without being overwhelming. Cover the essentials and organize them clearly so anyone can follow along. Consider including the following sections:

• Financial accounts: Bank names, account numbers, and the location of statements
• Insurance policies: Life, health, auto, and homeowners policy numbers and contact information
• Digital assets: Email accounts, social media logins, and password manager access
• Real estate and vehicles: Deed locations, mortgage details, and title information
• Professional contacts: Your attorney, financial advisor, accountant, and doctor
• Funeral and burial wishes: Preferences for service, burial or cremation, and any prepaid arrangements
• Personal messages: Notes to loved ones that you want shared after your passing

3. A Letter of Instruction Differs from a Will in Important Ways

Your will is a formal legal instrument. It names beneficiaries, appoints an executor, designates guardians for minor children, and distributes your property. Courts oversee the process. Witnesses must sign. Specific legal requirements must be met. A letter of instruction has none of those requirements. It speaks in your own voice, in plain language, and it can be updated at any time without legal formality. The will says who gets what. The letter of instruction says where everything is and how you want things handled. Both documents serve your family, but they serve very different purposes.

4. The Right People Need to Know Where Your Letter of Instruction Is

Writing a letter of instruction only helps if your family can find it. Your executor needs to know its location before you pass. Many people store the letter with their will in a fireproof home safe, a filing cabinet, or a secure digital folder. Some people share a copy directly with their executor or a trusted adult child. Avoid storing it only in a bank safe deposit box, since access to that box may be restricted immediately after death. The goal is simple: the right person finds the right document at the right time. Planning for access is just as important as writing the letter itself.

5. You Should Update Your Letter of Instruction Regularly

Life changes constantly. Accounts open and close. Properties are sold. Passwords expire. Relationships shift. Your letter of instruction should reflect where your life stands today, not five years ago. Financial experts recommend reviewing your letter every one to two years and any time a major life event occurs, such as a marriage, divorce, new child, or significant asset purchase. Because the letter requires no legal formalities, updating it takes only minutes. You can rewrite it, reprint it, and replace the old copy without involving an attorney. Staying current means your family gets accurate information when they need it most.

The Big Question: Should You Write a Letter of Instruction?

The answer is yes, without hesitation. A letter of instruction costs nothing to create and requires no legal expertise. It reduces the burden on your family at the worst possible time. It prevents confusion, delays, and disputes over your estate. Many estate planning attorneys charge hundreds of dollars just to discuss the concept, but the truth is you do not need to pay a professional to put this together. You simply need a clear head, an organized approach, and the willingness to sit down and write it. Pair your letter of instruction with a properly executed will, and your family will have everything they need to honor your wishes.

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