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Estate planning basics: The 5 documents most adults need

Five documents protect your family from probate, court-appointed guardianship, and tax surprises. Get them done — the cost is modest and the alternative is chaos.

Jahanzeb Nawaz — Founder, FinBrief

Written by

Jahanzeb Nawaz

Founder, FinBrief

Reviewed by the FinBrief Editorial Team

Updated · 11 min read

If you don't have an estate plan, your state has one for you — and you won't like it. Without basic documents in place, the courts decide who raises your children, who manages your money if you're incapacitated, and whether life support continues. The cost of fixing this is modest. The cost of not fixing it is enormous.


The 5 documents almost every adult should have

DocumentWhat it doesIf you skip it
Last will and testamentDirects where stuff goes, names guardians for minor children, names an executorState intestacy law decides; court appoints guardian for kids
Durable financial POANames someone to manage finances if you're incapacitatedFamily must petition court for conservatorship — slow, public, expensive
Healthcare POANames someone to make medical decisions for youDoctors / state default rules pick; family may be locked out
Advance directive (living will)Spells out end-of-life wishes (ventilator, feeding tube, etc.)Family guesses or fights about it
Updated beneficiary designationsRoutes 401(k), IRA, life insurance, POD accountsStale designations override your will — ex-spouse may inherit

1. Last will and testament

The will is what most people think of as "estate planning" — and it's important — but it's actually only one piece of the puzzle. What it does:

  • Directs distribution of "probate assets" — anything in your name alone, not jointly titled, and without a beneficiary designation. Common examples: bank accounts in your name only, vehicles, personal property, taxable brokerage accounts (unless TOD-registered).
  • Names a guardian for minor children — arguably the most important reason for parents to write a will. Without this, family members may contest in court.
  • Names an executor — the person who handles the probate process (collecting assets, paying debts, distributing per the will).
  • Can create a testamentary trust — a trust that springs into existence at your death, useful for managing money for minor children.

What a will does NOT control: retirement accounts, life insurance, joint accounts, POD/TOD accounts, and assets in a living trust. Those pass outside probate.


2. Durable financial power of attorney

This document names someone (your "agent" or "attorney-in-fact") to manage your financial affairs if you become incapacitated — paying bills, signing checks, accessing bank accounts, filing your tax return, making investment decisions on accounts that don't have a beneficiary designation.

"Durable" means it survives incapacity (a non-durable POA terminates when you become incapacitated, which defeats the purpose). Without one, your family has to petition a court for conservatorship — a process that takes months, is publicly recorded, and costs thousands in legal fees.


3. Healthcare power of attorney

Names someone to make medical decisions when you can't — what treatments to pursue, which hospital, whether to consent to surgery. Different from the financial POA (different agent, different scope; usually a separate document).

Hospitals will look for this. In the absence of one, many states default to a hierarchy (spouse first, then adult children, etc.), but it's not universal and it doesn't apply to unmarried partners. If you're in a long-term unmarried relationship, this document is non-optional.


4. Advance directive / living will

Documents your specific wishes for end-of-life care:

  • Do you want a ventilator if there's no realistic chance of recovery?
  • Feeding tubes?
  • Resuscitation if your heart stops?
  • Pain management priorities (some people prefer comfort even if it shortens life; others want every measure)

This document works alongside the healthcare POA: the POA agent makes the call, guided by the directive's stated wishes. Without it, families often fight or freeze. Many states have a standard form; a few minutes filling it out today saves months of family grief later.


5. Beneficiary designations — the silent override

This is where most people's estate plans actually break. Beneficiary designations on retirement accounts, life insurance, and POD/TOD accounts override your will. If your 401(k) still names an ex-spouse from 2010, the divorce decree doesn't matter — the 401(k) plan pays the ex.

  • Audit annually. Pull up each account; verify primary and contingent beneficiaries.
  • Always name a contingent beneficiary. If your primary dies before you (or with you), the account flows to the contingent — otherwise it falls into probate.
  • Don't name your estate as beneficiary. It forces probate and accelerates tax recognition on inherited IRAs.
  • Consider per-stirpes designations. If a beneficiary predeceases you, per-stirpes routes their share to their children. Most beneficiary forms allow this.

Probate — what it actually is, and why people avoid it

Probate is the court process of validating a will, paying debts, and distributing assets. It's not as bad as some online voices make it out to be — most states have streamlined probate for smaller estates. But it has real downsides:

  • Time: 6–18 months typical, longer in complex estates.
  • Cost: Court fees + executor compensation + attorney fees can run 3–7% of the estate.
  • Privacy: Probate is public record. Anyone can pull your will and asset list.
  • Multi-state property: Real estate in another state triggers a second probate ("ancillary probate") in that state — a key reason to consider a revocable living trust if you own out-of-state real estate.

When a revocable living trust makes sense

A revocable trust holds your assets during your lifetime (you're the trustee — you control everything as before), then a successor trustee distributes per your instructions at your death, bypassing probate. Good fits:

  • You own real estate in multiple states.
  • Your state has a slow or expensive probate process (California, Florida historically painful).
  • You want privacy — trust distributions are not public record.
  • You have a blended family with children from a prior marriage — trusts handle this much more cleanly than wills.
  • You have a child or beneficiary who needs structured distributions (substance issues, spendthrift, disabilities).

Estate tax — does this apply to you?

Federal estate tax exemption is $13.99M per individual / $27.98M per couple in 2025. The 2017 Tax Cuts and Jobs Act doubled the exemption, with the increase scheduled to sunset at end of 2025, returning to ~$7M individual / ~$14M couple. Whether Congress extends is uncertain as of the publication date — verify current rules before relying on them.

States have their own estate or inheritance taxes with much lower exemptions. Massachusetts: $2M. Oregon: $1M. Washington: $2.193M. New York: $7M-ish. Maryland and New Jersey have inheritance taxes that apply at much lower levels. If your net worth is above $2M and you live in one of these states, you need estate-planning attorney input.


How to actually do it

For most middle-class households without complex situations:

  1. Online service for basic will + POA + directives (Trust & Will, LegalZoom, Rocket Lawyer, Fabric by Gerber Life). $150–$500. Adequate for simple estates.
  2. Local estate attorney if you have any of: blended family, special-needs beneficiary, business interest, taxable estate (state or federal), property in multiple states, anyone you want to disinherit. $1,000–$5,000.
  3. Update beneficiary designations on EVERY account — retirement, life insurance, bank PODs, brokerage TODs.
  4. Store documents where your executor can find them. A safe deposit box can be tricky (banks may seal at death); a fireproof home safe + a copy with your attorney works better.
  5. Review every 3–5 years or after any major life event (marriage, divorce, birth, death, move to a new state, large change in net worth).

If your estate plan includes the right amount of life insurance for dependents:

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The bottom line

Get the 5 documents in place. Audit your beneficiary designations. If your situation is simple, an online service is fine; if it's complex, pay for an attorney. The hardest part of estate planning is starting — the actual work is usually a few hours.

Related reading

Frequently asked questions

Do I need a will if I'm young and don't have much?
Yes — especially if you have minor children or anyone financially dependent on you. A will lets you name a guardian for kids and direct where your stuff goes; without one, state intestacy law decides, and it's rarely what you'd want. Even single 25-year-olds with $20K in a 401(k) benefit from a basic will and updated beneficiary designations.
Do beneficiary designations override my will?
Yes, and this surprises people. Retirement accounts (401(k), IRA), life insurance, and POD bank accounts pass via beneficiary designation regardless of what your will says. If you got divorced 10 years ago and never updated your 401(k) beneficiary, your ex-spouse still gets the money. Check designations annually.
Do I need a trust?
Most middle-class households don't NEED one but may benefit. A revocable living trust avoids probate (faster, more private), and can be useful if you own real estate in multiple states. For high net worth (above the federal estate-tax exemption — $13.99M individual / $27.98M couple in 2025, scheduled to be cut in half in 2026 unless Congress extends), more sophisticated trusts become essential. Talk to an estate attorney.
What's the difference between a healthcare POA and an advance directive?
A healthcare POA names a person to make medical decisions for you when you can't. An advance directive (sometimes called a living will) spells out your wishes for end-of-life care — ventilator, feeding tube, comfort care. They work together: the POA makes decisions, guided by the advance directive's instructions.
How much does an estate plan cost?
Online services (LegalZoom, Trust & Will, Rocket Lawyer) run $150–$500 for a basic will + POA + directives package. A local estate attorney typically runs $1,000–$3,000 for a will-based plan, $2,500–$5,000+ for a revocable living trust plan. For complex situations (business ownership, blended families, special-needs heirs, taxable estates), pay for the attorney.