What Was the Estate Tax Exemption in 2011?

The federal estate tax exemption in 2011 was $5 million per person, with a top tax rate of 35% on anything above that threshold.¹ The same law that set the $5 million figure also introduced portability, letting a surviving spouse inherit whatever exemption the first spouse to die had not used. For a married couple, that meant up to $10 million could pass to heirs free of federal estate tax.

Where the $5 Million Figure Came From

The estate tax had been on a moving track for a decade. A 2001 law gradually raised the exemption from $675,000 to $3.5 million by 2009, then repealed the tax entirely for 2010. That one-year gap meant the date of a person’s death could swing the tax bill by millions.

In December 2010, Congress passed the Tax Relief, Unemployment Insurance Reauthorization, and Job Creation Act. The law reinstated the estate tax for 2011 and 2012 at a $5 million exemption and a 35% top rate.² For most families the tax simply didn’t apply. Only estates above $5 million owed anything.

To know whether an estate crossed the line, the executor totaled everything the person owned at death: real estate, bank accounts, investments, retirement accounts, life insurance proceeds, and business interests. If the combined value stayed under $5 million, no federal estate tax return was required, unless the executor was electing portability.

How the 35% Rate Applied

Only the amount above $5 million was taxed.³ A $6 million estate owed tax on $1 million of excess, or roughly $350,000 before deductions. The first $5 million passed free.

The 35% rate was low by historical standards. The top rate ran at 55% through much of the 1990s and was 45% in 2009. The 2010 compromise reflected a split between lawmakers who wanted the tax gone and those who wanted it stronger. Payment was due nine months after death, with extensions available on a separate filing.² Late payment brought penalties and interest.

Deductions That Reduced the Taxable Estate

Several deductions came off the gross estate before the exemption was tested:⁴

Funeral and burial costs paid from the estate.
Administration expenses, including attorney fees, executor fees, and appraisal costs.
Debts and mortgages owed at the time of death.
Charitable gifts to qualified organizations.
Property passing to a surviving U.S. citizen spouse.

The marital deduction was the largest of these. Property left to a surviving spouse was fully exempt regardless of size.⁵ A $50 million estate left entirely to a spouse owed nothing. The tax question moved to the surviving spouse’s eventual death.

Lifetime Gifts Counted Against the $5 Million

The 2011 exemption was unified. It covered lifetime gifts as well as transfers at death.⁶ Give away $1 million in taxable gifts during life, and only $4 million of exemption remained at death. That structure kept people from emptying their estates by gift to avoid the tax.

Small gifts sat outside the system. Each person could give up to $13,000 per recipient in 2011 without using any of the $5 million.¹ Married couples could combine their annual exclusions for $26,000 per recipient. Tuition paid directly to a school and medical bills paid directly to a provider on someone else’s behalf didn’t count against either limit.

Portability Between Spouses

Portability was new in 2011 and it changed estate planning for married couples. Under prior law, each spouse had a separate exemption, and any portion the first spouse didn’t use was lost. To preserve both exemptions, couples typically set up credit shelter or bypass trusts, which cost money and added complications.

Portability allowed the unused exemption to carry over. If the first spouse used only $2 million of their $5 million exemption, the surviving spouse inherited the remaining $3 million and added it to their own for a combined $8 million shield.⁶ At the maximum, a couple could shelter $10 million.

The transferred amount is called the deceased spousal unused exclusion, or DSUE. Claiming it required the executor of the first spouse’s estate to file Form 706, the federal estate tax return, even when the estate owed no tax.² That tripped up many families with smaller estates who assumed no return was needed. Skipping the filing meant the unused exemption was gone. The standard deadline was nine months after death, with extensions available.

The Generation-Skipping Transfer Tax

Transfers to grandchildren or more distant descendants faced a separate tax. In 2011 the generation-skipping transfer tax exemption also sat at $5 million, and its top rate was 35%.⁷ The GST tax stops wealthy families from bypassing a full generation of estate tax by leaving assets directly to grandchildren.

Step-Up in Basis for Heirs

The estate tax exemption was one piece of the picture. Inherited assets also received a step-up in basis. The heir’s cost basis for capital gains purposes resets to the fair market value on the date of death, not what the deceased originally paid.⁸

The effect can be large. A parent who bought stock for $50,000 that was worth $500,000 at death passes it to an heir with a $500,000 basis. If the heir sells for $510,000, capital gains tax applies to $10,000, not the $460,000 of appreciation that built up during the parent’s life.⁹ The step-up applied whether or not the estate owed any estate tax, so heirs of estates well below $5 million still got the benefit. If the asset had fallen in value, the basis stepped down instead.

How 2011 Compares to Today

The $5 million exemption grew with inflation through 2017, then roughly doubled under the Tax Cuts and Jobs Act starting in 2018. For 2026, the One Big Beautiful Bill Act raised the basic exclusion to $15 million per person, three times the 2011 figure.¹ Married couples with proper planning can shelter up to $30 million.

The current $15 million exemption has no sunset provision, unlike the 2010 law that set the $5 million figure with a built-in expiration. Inflation adjustments to the new amount begin in 2027.⁶ The top rate has moved the other way, rising to 40% from the 35% that applied in 2011. The framework Congress built in 2011, with a unified credit, spousal portability, and a matching GST exemption, still shapes how the estate tax works.

1
Internal Revenue Service. What’s New – Estate and Gift Tax
2
Internal Revenue Service. Instructions for Form 706
3
GovInfo. 26 USC Subtitle B Chapter 11 Subchapter A – Estate Tax
4
Office of the Law Revision Counsel. 26 USC 2053 – Expenses, Indebtedness, and Taxes
5
Office of the Law Revision Counsel. 26 USC 2056 – Bequests, Etc., to Surviving Spouse
6
Office of the Law Revision Counsel. 26 USC 2010 – Unified Credit Against Estate Tax
7
Office of the Law Revision Counsel. 26 USC 2631 – GST Exemption
8
Office of the Law Revision Counsel. 26 USC 1014 – Basis of Property Acquired From a Decedent
9
Internal Revenue Service. Gifts and Inheritances