Estate Planning Basics: Documents Everyone Needs and When to Get Them
55% of Americans have no will. When you die without one, a court decides what happens to your assets, your children, and your medical care — using your state's default rules, not your wishes. The cost of basic estate documents: $300–$1,500. The cost of dying without them: potential probate fees of 3–7% of your estate, family conflict, and court proceedings. Here's what every adult actually needs.
The 5 core documents and who needs each
1. Last Will and Testament
Who needs it: Everyone with any assets, children, or preferences about their estate.
What it does: Distributes your assets, names a guardian for minor children, designates an executor to manage the estate process.
Cost: $300–$600 for a simple will from an estate attorney; $100–$200 from online services (LegalZoom, Trust & Will).
Without it: Intestate succession laws apply — your state's default distribution rules, which may not match your wishes. Courts appoint a guardian for children without input from you.
2. Revocable Living Trust
Who needs it: Those with significant assets, multiple properties, blended families, or wanting to avoid probate.
What it does: Assets in the trust transfer directly to beneficiaries without probate. Provides for management of your affairs if incapacitated. More private than a will (not public record).
Cost: $1,500–$3,000 for an attorney-drafted trust + the cost to retitle assets into the trust.
Without it: Even with a will, estates with real property typically go through probate — 6 months to 2 years, costing 3–7% of estate value.
3. Durable Power of Attorney (Financial)
Who needs it: Every adult.
What it does: Names someone to manage your finances if you become incapacitated. Pay bills, manage accounts, file taxes, make financial decisions on your behalf.
Without it: Family must petition a court for guardianship/conservatorship — costly (often $5,000+), slow (months), and public.
4. Healthcare Proxy / Medical Power of Attorney
Who needs it: Every adult over 18.
What it does: Names someone to make medical decisions if you can't. Every adult should have this — hospitals cannot legally discuss your care with family without it.
Critical note: Parents of college-age children: once your child turns 18, HIPAA prevents you from accessing their medical records or making decisions without a healthcare proxy. Have them sign one before they leave for college.
5. Advance Directive / Living Will
Who needs it: Every adult.
What it does: Documents your wishes for end-of-life care — resuscitation preferences, ventilator use, feeding tubes, organ donation. Relieves family of impossible decisions during a crisis.
POLST: A Physician Orders for Life-Sustaining Treatment form is the medical order version, typically for those with serious illness. More immediately actionable than an advance directive for paramedics and ER staff.
When to update your estate documents
| Life Event | What to Update |
|---|---|
| Marriage | Will, beneficiary designations on all accounts and insurance |
| Divorce | Will (urgently), beneficiary designations, POA if spouse was agent |
| Birth of a child | Will (guardian designation), beneficiary designations |
| Death of a beneficiary or named agent | Will, POA, healthcare proxy, trust (if any) |
| Major asset acquisition (house, business) | Will, trust if appropriate |
| Move to a new state | Review — some documents may not be valid across state lines |
Beneficiary designations override your will. Retirement accounts (401k, IRA), life insurance policies, and bank accounts with TOD (transfer on death) designations pass directly to the named beneficiary — regardless of what your will says. An ex-spouse named as beneficiary 10 years ago gets the money, not your current family. Review beneficiary designations annually.
Cost comparison: attorney vs. DIY
| Approach | Cost | Best For |
|---|---|---|
| Estate attorney (full package) | $1,500–$3,000 | Married couples, significant assets, complex situations |
| Online services (Trust & Will, LegalZoom) | $200–$500 | Simple situations, young adults, basic wills |
| DIY (state-specific forms) | $0–$50 (notary) | Very simple situations; risk of errors is real |
| No documents | $0 now, 5% of estate + years of court later | Never appropriate |
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Randive, A. (2026). Estate Planning Basics: Documents Everyone Needs and When to Get Them. DecisionsCalc. https://decisionscalc.com/articles/estate-planning-basics/