Estate Planning Checklist: 8 Documents Every Adult Should Have

Why Estate Planning Is Not Optional — Regardless of Your Age or Wealth

The term "estate" sounds like it implies a mansion and a fleet of attorneys. It doesn't. Your estate is simply everything you own — your bank accounts, your car, your apartment lease, your retirement accounts, your phone, your dog. And your "plan" for what happens to all of it when you die — or become incapacitated — defaults to whatever your state's law dictates if you haven't specified otherwise.

Here is what that looks like in practice:

• If you die without a will, your state's intestacy laws determine who inherits your property. Your estranged sibling may inherit instead of the partner you've lived with for a decade. Your closest friend gets nothing.
• If you become incapacitated without a durable power of attorney, your family may need to go to court — at significant expense and delay — to establish a conservatorship just to pay your bills or make medical decisions.
• If you have minor children and no will naming a guardian, a judge who has never met your family decides who raises your kids.

Estate planning is not about death. It's about control — specifically, maintaining control over what happens to your assets and your care when you can't speak for yourself. This checklist gives you the eight documents that provide that control.

Document 1: Last Will and Testament

A last will and testament is the foundational document of any estate plan. It specifies how your assets should be distributed after death, names your executor (the person responsible for administering your estate), and — critically for parents of minor children — designates a guardian for your children.

What a Will Does

• Names the beneficiaries who will receive your assets
• Designates an executor to manage the estate administration process
• Names a guardian for any minor children
• Specifies any specific bequests (who gets grandma's ring, who gets the car)
• Establishes charitable gifts if desired

What a Will Does NOT Do

A will does not avoid probate — assets left through a will typically must go through the probate process, which is a court-supervised procedure that can take months to years and involves legal fees. Assets held in a trust, or with named beneficiaries (like retirement accounts and life insurance), typically pass outside of probate regardless of what your will says. This is why a will alone is often not a complete estate plan — it's the starting point.

What Happens Without One

You die "intestate," meaning the state's intestacy laws determine distribution. These laws follow a rigid formula — typically spouse first, then children, then parents, then siblings — with no room for your actual wishes, relationships, or circumstances.

Document 2: Revocable Living Trust

A revocable living trust is a legal arrangement in which you transfer ownership of your assets to a trust during your lifetime. You remain the trustee (in control) while alive and competent. At death, the assets in the trust pass directly to your named beneficiaries without going through probate.

Key Benefits of a Living Trust

• Avoids probate: Assets in a properly funded trust pass directly to beneficiaries — faster, privately, and without court fees.
• Provides for incapacity: Unlike a will (which only controls what happens at death), a living trust allows your successor trustee to step in and manage your affairs if you become incapacitated.
• Privacy: Wills become public record when they go through probate. Trusts remain private.
• Multi-state property: If you own real estate in more than one state, a will typically requires probate in each state. A trust handles all states through a single document.

The Critical Step: Funding the Trust

A living trust only controls the assets that are formally transferred into it. An unfunded trust — one that's been drafted but never had assets titled to it — provides none of these benefits. Working with an estate planning attorney to properly fund the trust is essential, and it's one of the most commonly skipped steps when people use online DIY tools.

Document 3: Durable Financial Power of Attorney

A durable financial power of attorney (POA) designates a person — your "agent" or "attorney-in-fact" — to manage your financial affairs if you become incapacitated. "Durable" means the document remains effective even if you lose mental capacity (a standard POA typically becomes invalid upon incapacity, which is precisely when you need it).

What Your Agent Can Do

The scope depends on what you specify in the document, but typically includes: paying your bills, managing bank accounts, filing taxes, managing investments, handling real estate transactions, and applying for government benefits on your behalf.

Without This Document

If you become incapacitated without a durable POA, your family cannot legally access your accounts, pay your mortgage, or manage your finances without going to court to establish a conservatorship — a process that can take months, cost thousands of dollars, and require ongoing annual court supervision.

Choosing Your Agent

This is one of the most important decisions in your estate plan. Your agent should be someone you trust implicitly with money, who is organized and responsible, and who is willing to take on the administrative burden. Many people name a spouse as primary agent and an adult child or sibling as successor. A professional trustee or fiduciary can also serve this role if no family member is appropriate.

Document 4: Healthcare Power of Attorney (Healthcare Proxy)

A healthcare power of attorney — also called a healthcare proxy or medical power of attorney — designates a person to make medical decisions on your behalf if you cannot make them yourself. This is a separate document from your financial POA and addresses a separate domain: your body and your medical care.

What It Covers

Your healthcare agent can consent to or refuse medical treatments, authorize surgeries and procedures, access your medical records, communicate with your care team, and make decisions that are not addressed specifically in your advance directive.

Who Should You Choose?

The ideal healthcare proxy is someone who knows your values, can handle medical environments and stressful conversations without panicking, is willing to advocate assertively for your wishes even under pressure from family members or providers, and is geographically accessible in an emergency. This is often not the same person you would choose as your financial agent — choose based on the specific qualities each role requires.

Document 5: Advance Healthcare Directive (Living Will)

An advance healthcare directive — commonly called a living will — specifies your wishes for end-of-life medical care in writing. It operates independently of a healthcare proxy, providing explicit instructions for situations where your agent may face pressure from family, providers, or circumstances.

What an Advance Directive Typically Addresses

• Whether you want life-sustaining treatment (ventilators, feeding tubes, CPR) if recovery is not expected
• Your wishes about comfort care and pain management (palliative care and hospice)
• Organ donation preferences
• Preferences about dying at home vs. in a hospital or care facility
• Any condition-specific instructions (dementia, terminal illness, permanent unconscious state)

Why Both the Proxy and the Directive Matter

The directive handles situations you've anticipated and documented. The healthcare proxy handles situations you haven't. Together, they ensure your wishes govern your care in virtually every foreseeable scenario. Without either, your family may face devastating disagreements at the worst possible moment — and medical providers may default to aggressive intervention regardless of what you would have wanted.

Document 6: HIPAA Authorization

The Health Insurance Portability and Accountability Act (HIPAA) restricts who can access your medical information. Without a signed HIPAA authorization, your healthcare agent — even with a healthcare POA in hand — may face resistance from providers who are reluctant to share information about your condition.

A HIPAA release form is a simple document that authorizes specific individuals to access your health information. It's often included as part of a comprehensive estate plan and takes minutes to complete, but it can prevent significant roadblocks when your agent needs to coordinate your care or speak with multiple providers across different health systems.

Name the same individuals as your healthcare proxy — plus any other family members you want kept informed — in your HIPAA authorization to ensure smooth communication.

Document 7: Beneficiary Designations

This is one of the most overlooked items on any estate planning checklist, and one of the most consequential. Many of your most valuable assets — retirement accounts (401(k), IRA), life insurance policies, bank accounts with TOD (transfer on death) designations, and brokerage accounts — pass directly to named beneficiaries upon your death, completely bypassing your will and your trust.

Why This Matters

Your will says everything goes to your spouse. But your 401(k) still has your ex-spouse listed as the beneficiary from fifteen years ago. Your ex-spouse gets the retirement account. Every time. Courts have consistently upheld beneficiary designations over conflicting will provisions — the beneficiary form wins.

What to Review and Update

• All employer-sponsored retirement plans (401(k), 403(b), pension)
• Individual retirement accounts (IRA, Roth IRA)
• Life insurance policies (employer-sponsored and individual)
• Bank accounts with TOD or POD (payable on death) designations
• Brokerage and investment accounts
• Annuities

Review every beneficiary designation when completing your estate plan, and update them after any major life event: marriage, divorce, birth of a child, or death of a named beneficiary. Make sure primary and contingent beneficiaries are named for each account — if your primary beneficiary predeceases you and there's no contingent, the asset may go through probate regardless of your other planning.

Document 8: Letter of Instruction (Memorandum of Wishes)

A letter of instruction is not a legally binding document, but it is often described as the most practically useful piece of an estate plan. It's a plain-language document that provides your executor, trustee, and family with information that your formal legal documents don't contain — and that they'll desperately need after your death.

What a Letter of Instruction Typically Includes

• Account inventory: Where your accounts are, account numbers, online login guidance
• Location of key documents: Where to find your will, trust, insurance policies, titles, deeds
• Digital assets: Email accounts, social media, cryptocurrency wallets, cloud storage
• Funeral and burial wishes: Specific preferences your loved ones may not know about
• Pet care: Instructions and preferences for any pets
• Personal property wishes: Non-binding but meaningful guidance on sentimental items not covered in the will
• People to notify: Friends, employers, organizations, professional contacts

Because it's not a legal document, a letter of instruction can be updated anytime — and should be. Keep it in a secure but accessible location known to your executor, and review it annually or after any major life change.

Estate Planning Checklist: Quick Reference

Here's the complete estate planning checklist at a glance:

1. ✅ Last Will and Testament — distributes assets, names guardian for minor children
2. ✅ Revocable Living Trust — avoids probate, manages incapacity, maintains privacy
3. ✅ Durable Financial Power of Attorney — financial management during incapacity
4. ✅ Healthcare Power of Attorney — medical decision-making during incapacity
5. ✅ Advance Healthcare Directive / Living Will — written end-of-life care instructions
6. ✅ HIPAA Authorization — allows medical information sharing with your designees
7. ✅ Beneficiary Designations — updated and consistent across all accounts and policies
8. ✅ Letter of Instruction — practical guidance for executor, family, and trusted contacts

When to Update Your Estate Plan

An estate plan is not a set-it-and-forget-it document. Review and update your plan after any of the following events:

• Marriage or divorce
• Birth or adoption of a child or grandchild
• Death of a named beneficiary, executor, trustee, or agent
• Significant change in assets or financial situation
• Relocation to a different state (laws vary significantly)
• Changes in tax law affecting estate planning strategy
• Change in your wishes regarding medical care or beneficiaries

Even without a triggering event, a full review every three to five years is good practice. Estate planning law changes, your circumstances evolve, and documents that were appropriate five years ago may no longer reflect your wishes or optimize your situation.

Do You Need an Attorney for Estate Planning?

Online will services have made basic estate documents more accessible and affordable. For a young, single person with minimal assets and no dependents, an online will may be sufficient — for now.

But for most adults, working with an estate planning attorney provides meaningful advantages:

• Customization: Template documents make generic assumptions. An attorney drafts for your specific family structure, asset mix, and goals.
• Trust drafting and funding: Online tools rarely provide proper trust funding assistance — leaving people with a trust that does nothing because assets were never transferred into it.
• Coordination: An estate planning attorney reviews the entire plan holistically — ensuring your will, trust, beneficiary designations, and POAs are consistent and work together.
• Tax optimization: For larger estates, there may be significant tax planning strategies that basic documents don't implement.
• State-specific compliance: Estate planning laws vary by state. A local estate planning attorney ensures your documents are valid and optimized for your jurisdiction.

You can read more about when to use an attorney vs. doing it yourself in our guide to Estate Planning Basics: Do You Need an Attorney?