
UNDERSTANDING
THE ESTATE TAX EXEMPTION, THE UNLIMITED MARITAL DEDUCTION, AND PORTABILITY.
ABOUT THE AUTHOR

Elan R. Kaney, Esq.
LL.M in Taxation
NYU School of Law
25+ Years of Experience
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Estate Planning
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Probate
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Trust Administration
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Business Succession Planning
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Tax Planning & Advocacy
My goal is to help Florida families protect what matters most to them and plan for the future with clarity and confidence.
2026 Estate Tax Exemptions & Rate
Individual Estate Tax Exemption: $15 million
Married Estate Tax Exemption with Portability: $30 million
Top Federal Tax Rate: 40%
Annual Gift Exemption: $19,000 per recipient
- Elan R. Kaney
THE RIGHT PLAN TODAY
can save your family time, money and stress tomorrow.
KEY TAKEAWAYS

ESTATE TAX
EXEMPTION
The Estate Tax Exemption determines how much wealth may pass free of federal estate tax.

UNLIMITED
MARITAL
DEDUCTION
The Unlimited Marital Deduction generally allows assets to pass to a surviving spouse without immediate estate tax.

PORTABILITY
Portability may allow a surviving spouse to use a deceased spouse's unused exemption.

TRUSTS
Portability can be valuable but does not replace all trust planning.
Trusts may still provide significant tax and non-tax advantages.

PERIODIC
REVIEWS
Estate tax laws change over time, making periodic review important.
Understanding
the Estate Tax Exemption,
the Unlimited Marital Deduction, and
Portability
Many people have heard the phrase "estate tax" but are surprised to learn that relatively few estates are currently subject to federal estate tax. Three important concepts often determine whether estate tax planning is necessary:
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The Estate Tax Exemption;
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The Unlimited Marital Deduction; and
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Portability.
Understanding how these rules work together can help families make informed estate planning decisions and preserve wealth for future generations.
What Is the Federal Estate Tax?
The federal estate tax is a tax imposed on certain transfers occurring at death.
Generally speaking, the tax applies to the value of assets owned by a person at death, including:
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Real estate;
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Investment accounts;
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Business interests;
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Life insurance in certain circumstances;
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Other property interests.
The estate tax is separate from income taxes and capital gains taxes.
What Is the Estate Tax Exemption?
The Estate Tax Exemption is the amount that may pass free of federal estate tax. For many families, the exemption determines whether sophisticated tax planning is necessary. The larger the estate, the more important exemption planning may become.
What Is the Unlimited Marital Deduction?
The Unlimited Marital Deduction is one of the most powerful concepts in federal estate tax law. Generally speaking, assets passing to a surviving spouse may qualify for an unlimited deduction from the taxable estate.
Example:
John dies owning: $15,000,000
He leaves all assets to his wife, Susan.
Because the transfer qualifies for the Unlimited Marital Deduction, no federal estate tax may be due at John's death, even if the estate exceeds the exemption amount.
The tax is effectively postponed until Susan's death.
Does the Marital Deduction Eliminate Estate Tax?
Not necessarily. The Unlimited Marital Deduction often delays estate tax rather than eliminates it.
Example:
John leaves $15,000,000 to Susan.
No estate tax is due at John's death.
Years later, Susan dies owning: $18,000,000
Estate tax planning may then become important when Susan's estate is administered.
For this reason, many estate plans incorporate trust provisions designed to preserve both spouses' exemptions.
What Is Portability?
Portability is a federal tax concept that allows a surviving spouse to utilize a deceased spouse's unused estate tax exemption. The deceased spouse's unused exemption is often referred to as the Deceased Spousal Unused Exclusion Amount (DSUE).
Example:
John dies owning: $5,000,000
His exemption amount exceeds the value of his estate.
As a result, a substantial portion of John's exemption remains unused.
If a timely estate tax return is filed and portability is elected, Susan may be able to add John's unused exemption to her own exemption.
This can significantly increase the amount Susan may transfer free of estate tax at her death.
Why Is Portability Important?
Before portability was enacted, many married couples relied heavily upon complex trust planning to preserve both spouses' exemptions. Portability provides additional flexibility and may simplify planning for some families. However, portability does not necessarily eliminate the need for trusts.
What Portability Does Not Do:
Portability is helpful, but it has limitations. For example, portability generally does not:
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Protect appreciation occurring after the first spouse's death;
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Provide creditor protection;
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Protect assets from remarriage concerns;
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Provide divorce protection for beneficiaries;
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Preserve generation-skipping transfer tax exemptions.
Trust planning may still be beneficial even when portability is available.
Example: Married Couple with $20 Million
John and Susan have a combined estate worth: $20,000,000
Without Planning
John dies.
All assets pass to Susan.
Susan later dies owning the entire estate.
Estate tax exposure may exist depending upon exemption amounts in effect at that time.
With Portability
John's unused exemption may be preserved through a portability election.
Susan may benefit from both exemptions.
With Trust Planning
Additional opportunities may exist to:
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Preserve exemptions;
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Protect appreciation;
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Provide creditor protection;
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Benefit future generations.
Why Wealthy Families Still Use Trusts
Many people assume portability has eliminated the need for estate tax planning. In reality, trusts may continue to offer significant benefits. Examples include:
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Credit Shelter Trusts
Designed to preserve exemption amounts and future appreciation.
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Dynasty Trusts
Designed to benefit multiple generations.
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Generation-Skipping Trusts
Designed to preserve family wealth while minimizing transfer taxes.
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Tax Basis Optimization Planning
Designed to maximize income tax benefits for future beneficiaries.
Example: The Difference Can Be Significant
Assume John dies owning assets worth: $10,000,000
Those assets are expected to grow substantially.
If the assets appreciate to: $20,000,000 before Susan's death, the manner in which the assets were structured may significantly affect future estate tax exposure.
Proper planning can make a substantial difference.
Do Most Families Need Estate Tax Planning?
Not necessarily.
Many families are more concerned with:
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Asset protection;
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Beneficiary protection;
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Incapacity planning;
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Capital gains tax planning.
However, families with substantial assets should periodically review their plans to ensure they remain prepared for future changes in tax law.
About Elan R. Kaney
Elan R. Kaney is a Florida attorney with more than 25 years of legal experience in estate planning, probate administration, trust administration, business succession planning, and taxation. Ms. Kaney earned her LL.M. in Taxation from New York University School of Law, one of the nation's premier graduate tax law programs, and her Juris Doctor from Emory University School of Law.
She regularly assists Florida families with homestead planning, revocable trusts, probate administration, trust administration, and strategies designed to minimize court involvement and preserve family wealth for future generations.
Disclaimer
The information contained in this article is provided for general educational and informational purposes only and should not be construed as legal, tax, or financial advice.
Reading this article does not create an attorney-client relationship with Elan R. Kaney, Esq., Kaney Law, or any affiliated person or entity. You should not act or refrain from acting based upon the information contained in this article without first obtaining legal advice tailored to your specific situation.
The law is subject to change, and the information contained herein may not reflect the most current legal developments. Every estate presents unique facts and considerations that may affect the rights of heirs, beneficiaries, surviving spouses, creditors, and fiduciaries.
