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Estate Planning Basics: Wills, Trusts, and the Tax Math Everyone Should Know

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By Derek Jordan, BA Business Marketing  ·  Updated May 2026  ·  Reviewed for accuracy
📅 Updated May 2026 ⏱ 13 min read 🧮 Estate Tax Calculator

Disclaimer: This guide is educational and does not constitute legal or tax advice. Estate planning laws vary by state and change frequently. Consult with a qualified estate planning attorney and tax professional for advice specific to your situation.

Estate planning is something most people know they should do but keep putting off. According to a Gallup survey, only about 46% of American adults have a will. The consequences of dying without an estate plan range from expensive (probate costs of 2–7% of your estate) to devastating (a court deciding who raises your children). This guide covers the essential documents, the tax math, and how the pieces fit together — so you can make informed decisions and actually get it done.

The Five Documents Everyone Needs

1. Will (Last Will and Testament). Specifies who receives your assets, names a guardian for minor children, and appoints an executor to manage the process. Without a will, state intestacy laws make these decisions for you — and the result may not match your wishes.

2. Revocable Living Trust (optional but often recommended). A legal entity that holds your assets during your lifetime and distributes them after death without going through probate. You maintain full control as the trustee while alive. Assets in the trust pass privately and immediately to beneficiaries, avoiding the delays and costs of probate court.

3. Durable Power of Attorney. Designates someone to make financial decisions on your behalf if you become incapacitated. Without this document, your family must petition a court for guardianship or conservatorship — a costly and time-consuming process during an already stressful time.

4. Healthcare Power of Attorney (Healthcare Proxy). Designates someone to make medical decisions on your behalf if you cannot communicate your wishes. This person should understand your values and preferences regarding medical care.

5. Living Will (Advance Healthcare Directive). Documents your wishes regarding life-sustaining treatment, resuscitation, pain management, and organ donation. This works alongside the healthcare power of attorney to ensure your medical wishes are honored.

Will vs. Trust: When Each Makes Sense

FeatureWill OnlyRevocable Living Trust
Avoids probateNoYes
PrivacyPublic recordPrivate
Effective during incapacityNo (need separate POA)Yes (successor trustee steps in)
Multi-state real estateProbate in each stateSingle trust covers all states
Cost to create$300–$1,000$1,500–$3,500
Ongoing maintenanceMinimalMust re-title assets to trust
Names child guardiansYesNo (still need a will for this)
Controls distributions after deathLimitedFlexible (age-based, conditional)

Most trust-based estate plans include a “pour-over” will that catches any assets not titled to the trust and names guardians for minor children.

The probate cost math: Probate typically costs 2–7% of the gross estate value depending on the state, including court fees, attorney fees, executor fees, and appraisal costs. For a $500,000 estate, probate could cost $10,000–$35,000 and take 6–18 months. A trust costs $1,500–$3,500 upfront and avoids virtually all of these costs. For estates above $200,000–$300,000 with real estate, a trust typically pays for itself several times over. Use the Probate Cost Calculator to estimate potential costs in your state.

Federal Estate and Gift Tax

The federal estate tax exemption is $13.99 million per person in 2026 ($27.98 million for married couples using portability). Estates below this threshold owe zero federal estate tax. Estates above the exemption are taxed at a flat 40% on the excess.

However, two critical caveats apply. First, the current high exemption is scheduled to sunset after 2025 under the Tax Cuts and Jobs Act. If Congress does not act, the exemption could drop to approximately $7 million per person (adjusted for inflation) starting in 2026 or as legislated. Second, many states impose their own estate or inheritance taxes with much lower thresholds. States like Oregon ($1 million), Massachusetts ($2 million), and New York ($6.94 million) can impose significant state-level estate taxes on estates that owe nothing federally.

Estate SizeFederal Estate Tax (2026)Potential State Tax (Example: OR)Total Tax Exposure
$500,000$0$0$0
$1,500,000$0$50,000–$70,000$50,000–$70,000
$5,000,000$0$350,000–$475,000$350,000–$475,000
$15,000,000$404,000$1,200,000+$1,604,000+

Federal tax calculated at 40% above exemption. Oregon estate tax has a graduated rate structure from 10–16%. State taxes vary widely; not all states impose estate or inheritance tax. Source: IRS, Oregon DOR.

Use the Estate Tax Calculator to estimate your federal estate tax exposure, and the Inheritance Tax Calculator to check state-level implications. Knowing your net worth is the first step in understanding whether estate taxes could affect your family.

Beneficiary Designations: The Most Overlooked Piece

Beneficiary designations on retirement accounts (401(k), IRA), life insurance policies, and transfer-on-death (TOD) registrations on brokerage accounts override your will and trust. This is the single most common source of estate planning mistakes.

If your will says “everything goes to my spouse” but your 401(k) beneficiary is still your ex-spouse from 10 years ago, the 401(k) goes to your ex-spouse. The will has no authority over assets with beneficiary designations. Review all designations annually, especially after marriage, divorce, birth of a child, or death of a named beneficiary.

The step-up in basis: When you die, inherited assets receive a “step-up” in cost basis to the fair market value at the date of death. If you bought stock for $50,000 and it is worth $500,000 at death, your heirs' cost basis becomes $500,000 — wiping out $450,000 in unrealized capital gains. This is one of the most valuable features in the tax code for estate planning and is a key reason to hold appreciated assets rather than selling and gifting cash. Use the Capital Gains Calculator to understand the impact.

Life Insurance in Estate Planning

Life insurance serves two primary estate planning purposes: income replacement (ensuring your family can maintain their lifestyle if you die prematurely) and estate tax liquidity (providing cash to pay estate taxes without forcing the sale of illiquid assets like a business or real estate). For most families, a term life insurance policy is the most cost-effective solution. See our guide on how much life insurance you need and the term vs. whole life comparison for the detailed math.

Frequently Asked Questions

Do I need a will or a trust?
Everyone should have a will at minimum. A trust is additionally recommended if you own real estate (especially in multiple states), have minor children, have a blended family, value privacy, or want to avoid probate costs. Most homeowners with families benefit from a trust.
How much does estate planning cost?
A basic will costs $300–$1,000. A trust package typically costs $1,500–$3,500. Complex estates can cost $5,000–$15,000+. Compared to probate costs of 2–7% of estate value, professional estate planning often saves money.
What is the federal estate tax exemption?
$13.99 million per person in 2026 ($27.98 million for couples). The current high exemption is scheduled to sunset, potentially dropping to approximately $7 million per person. Several states also impose estate or inheritance taxes with thresholds as low as $1 million.
What happens if I die without a will?
State law determines asset distribution, which may not match your wishes. Unmarried partners receive nothing. A court appoints an administrator and decides guardianship of minor children. The estate goes through probate, costing 2–7% of its value.
How often should I update my estate plan?
Review every 3–5 years and after major life events: marriage, divorce, birth of a child, death of a beneficiary, significant asset changes, moving to a new state, or changes in tax law. Check beneficiary designations annually.

Estimate Your Estate Tax Exposure

See whether your estate could face federal or state estate taxes. Use the free Estate Tax Calculator to model your estate — no signup required.

Related tools: Inheritance Tax Calculator · Net Worth Calculator · Life Insurance Calculator · Gift Tax Calculator · Probate Cost Calculator · Capital Gains Calculator

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📚 Sources: [1] IRS — Estate Tax Overview [2] Gallup — Will Ownership Survey [3] American Bar Association — Estate Planning Resources [4] IRS — Gift Tax FAQ