9.5 Federal Gift, Estate, and GST Taxes and Basis Rules

Federal Gift, Estate, and GST Taxes and Basis Rules

The taxation of wealth transfers represents one of the most quantitatively rigorous and strategically vital disciplines within retirement and estate planning. Federal tax law imposes an integrated wealth transfer system designed to tax the gratuitous transmission of property during life and at death. To provide sound counsel, retirement advisors must understand the mechanics of the Unified Transfer Tax System, calculate gross estate liabilities, leverage exclusions, and evaluate the profound income tax basis differences between lifetime gifting and testamentary bequests.

Tax considerations must always be evaluated in tandem with client cash flow needs. Transferring assets prematurely to minimize estate taxes can compromise a retiree's income security or saddled beneficiaries with disadvantageous carryover income tax basis. This section examines the federal gift, estate, and generation-skipping transfer tax regimes alongside fundamental income tax basis rules.

The Unified Transfer Tax System

The Tax Reform Act of 1976 unified the federal gift tax (governed by IRC Chapter 12) and estate tax (IRC Chapter 11) into a single, cohesive transfer tax system. Under this structure, gratuitous transfers made during life and transfers occurring at death are calculated against a single cumulative rate schedule.

• Rate Structure: The federal estate and gift tax rate schedule is progressive, with a top marginal statutory rate of 40% applied to taxable transfers exceeding the statutory threshold.
• Cumulative Calculation: Lifetime taxable gifts (gifts exceeding annual exclusions) are not taxed in isolation; they are tracked cumulatively on IRS Form 709 (United States Gift and Generation-Skipping Transfer Tax Return) and added back to the taxable estate at death to determine the marginal estate tax bracket.

Basic exclusion under current law

The One Big Beautiful Bill Act changed the previously scheduled TCJA sunset. The federal estate/gift basic exclusion is $15,000,000 per individual for 2026, and the GST exemption is also $15,000,000. Do not teach a scheduled January 2026 reversion to approximately $7 million as current law. Later years are subject to statutory inflation adjustments and any later legislation.

For historical context, the basic exclusion was $13,610,000 in 2024 and $13,990,000 in 2025. Those values are not the 2026 exclusion. A lifetime taxable gift consumes available exclusion; the annual gift exclusion is a different rule. A planning analysis must consider prior taxable gifts, deductions, portability, and state transfer taxes.

Federal Gift Tax Mechanics and Exclusions

A gift for federal tax purposes occurs whenever an individual transfers property, or an interest in property, for less than full and adequate consideration in money or money's worth.

The Annual Exclusion (IRC Section 2503(b))

Under IRC Section 2503(b), an individual can transfer up to a statutory dollar threshold to an unlimited number of donees each calendar year completely free of gift tax and reporting requirements. For 2025/2026, the annual gift tax exclusion is $19,000 per donee.

• Present Interest Requirement: To qualify for the annual exclusion, the donee must receive an immediate right to the use, possession, or enjoyment of the property (a present interest). Transfers of a future interest (such as transfers into an irrevocable trust without Crummey withdrawal powers) do not qualify for the annual exclusion and require filing Form 709 regardless of dollar amount.

Spousal Gift Splitting (IRC Section 2513)

If a married donor makes a gift to a third party from their separate funds, the couple can elect gift splitting under IRC Section 2513. Gift splitting treats the transfer as if made one-half by each spouse, effectively doubling the annual exclusion to $38,000 per donee in 2025/2026.

• Form 709 Requirement: Gift splitting is not automatic; it requires timely filing of IRS Form 709, where both spouses sign mutual consent. If elected, gift splitting applies to all gifts made by both spouses during that calendar year.

Unlimited Qualified Transfer Exclusions (IRC Section 2503(e))

Congress provides an unlimited, complete exclusion from gift and generation-skipping transfer taxes for two specific categories of payments under IRC Section 2503(e):

1. Direct Tuition Payments: Payments made directly to a qualifying educational institution (colleges, universities, private primary/secondary schools) for tuition expenses. Payments for room, board, books, supplies, or living expenses do not qualify.
2. Direct Medical Payments: Payments made directly to a healthcare provider or medical facility for qualifying medical care, surgery, hospitalization, or health insurance premiums on behalf of any individual.

These qualified transfers have no dollar ceiling, can be made on behalf of any individual (regardless of relationship), and do not reduce the donor's $19,000 annual exclusion or lifetime basic exclusion amount. The payment must be made directly to the institution or provider; reimbursing the student or patient disqualifies the payment and converts it into a standard gift.

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Federal Gross Estate Composition and Deductions

The federal estate tax calculation begins by determining the decedent's Gross Estate under IRC Sections 2031 through 2042. The gross estate encompasses the fair market value of all property, real or personal, tangible or intangible, wherever situated, in which the decedent held an interest at death.

Key Inclusions in the Gross Estate

• Section 2033 (Property Owned Outright): All solely owned assets, real estate, bank accounts, and Tenancy in Common fractional interests.
• Section 2035 (3-Year Lookback Transfers): Life insurance policies transferred within 3 years of death, alongside any gift taxes paid on gifts made within 3 years of death ("gross-up rule").
• Sections 2036–2038 (Retained Interests & Revocable Transfers): Property previously transferred where the decedent retained a life estate, voting rights, the right to designate who enjoys income, or the power to alter, amend, or revoke the transfer (including all Revocable Living Trust assets).
• Section 2040 (Joint Interests):
  • For married couples holding JTWROS or TBE (qualified joint interests), exactly 50% of the property's fair market value is included in the first-to-die spouse's gross estate, regardless of who provided the purchase consideration.
  • For non-spouses holding JTWROS, 100% of the property's value is included in the decedent's gross estate unless the surviving tenant can prove they contributed funds under the "consideration furnished" rule.
• Section 2041 (Powers of Appointment): Property over which the decedent held a General Power of Appointment (the right to appoint property to themselves, their estate, their creditors, or creditors of their estate).
• Section 2042 (Life Insurance): The full death benefit of any life insurance policy on the decedent's life if the proceeds are payable to the estate, or if the decedent possessed any incidents of ownership at death.

Allowable Estate Tax Deductions

From the gross estate, the executor subtracts allowable statutory deductions to arrive at the Taxable Estate:

• Funeral and Administration Expenses (IRC § 2053): Attorney fees, executor commissions, court costs, and funeral costs.
• Debts, Mortgages, and Liens (IRC § 2053): Valid claims against the estate.
• Casualty and Theft Losses (IRC § 2054): Uncompensated losses during estate administration.
• Charitable Deduction (IRC § 2055): Unlimited deduction for qualifying bequests to 501(c)(3) charities.
• Unlimited Marital Deduction (IRC § 2056): Complete deduction for qualifying property passing outright or into a qualifying trust (such as a QTIP) to a surviving U.S. citizen spouse.

Non-Citizen Spouses: The unlimited marital deduction is disallowed if the surviving spouse is not a U.S. citizen. To obtain the marital deduction for a non-citizen spouse, assets must pass into a Qualified Domestic Trust (QDOT) under IRC Section 2056A, requiring at least one trustee to be an individual U.S. citizen or domestic corporation.

Portability of the Deceased Spousal Unused Exclusion (DSUE)

Under IRC Section 2010(c)(5), if a deceased spouse does not fully exhaust their basic exclusion amount, the surviving spouse can elect to capture the remaining unused exemption—known as the Deceased Spousal Unused Exclusion (DSUE)—and add it to their own lifetime exclusion.

• Mandatory Form 706 Election: Portability is not automatic. The executor of the deceased spouse's estate must file a timely IRS Form 706 (United States Estate Tax Return), even if the estate is well below the statutory gross filing threshold.
• Strategic Value: For a couple with a $20 million net worth, electing portability upon the first spouse's death allows the surviving spouse to shelter up to $30 million if both available exclusion amounts are $15 million, no prior taxable gifts have consumed them, and portability is properly elected from estate tax upon the second death.

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Generation-Skipping Transfer (GST) Tax

The Generation-Skipping Transfer (GST) Tax (IRC Chapter 13) operates as an additional backstop to prevent wealthy families from avoiding estate taxes at intermediate generations by transferring wealth directly to grandchildren or later generations.

• Flat Tax Rate: The GST tax is imposed at a flat rate equal to the maximum federal estate tax rate (40%), in addition to any applicable gift or estate taxes.
• Skip Persons Defined: GST analysis begins by identifying transfers to a skip person; exemptions and exclusions may prevent tax, defined as:
  • A lineal family descendant assigned to a generation that is two or more generations below the transferor (e.g., grandchildren or great-grandchildren);
  • An unrelated individual who is more than 37.5 years younger than the transferor.
• Predeceased Parent Exception: Under IRC Section 2651(e), if a child of the transferor predeceases the transferor, that deceased child's children (the grandchildren) "move up" one generation and are not treated as skip persons.
• GST Exemption (not portable between spouses): Each individual has a lifetime GST exemption equal to the basic exclusion amount ($15 million in 2026), which can be allocated to lifetime gifts or testamentary transfers.

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Income Tax Basis Rules: Step-Up, Carryover, and IRD Assets

Income tax basis rules represent the vital intersection where estate planning directly impacts lifetime retirement income and wealth transfer. How an heir calculates gain or loss upon selling inherited or gifted property depends strictly on whether the transfer occurred during life or at death.

1. Stepped-Up Basis at Death (IRC Section 1014)

Capital assets transferred from a decedent at death receive a new income tax basis equal to the property's fair market value (FMV) on the decedent's date of death (or on the alternate valuation date 6 months after death under IRC Section 2032).

• Elimination of Capital Gains: A stepped-up basis wipes out 100% of the unrealized capital gains that accumulated during the decedent's lifetime.
• Example: A client purchased stock for $50,000 that grew to $600,000 at their death. The heir receives a stepped-up basis of $600,000. If the heir sells the shares immediately for $600,000, they recognize $0 in capital gains.
• Automatic Long-Term Holding Period: Under IRC Section 1223(9), inherited capital property is automatically treated as held for more than one year, ensuring that any subsequent gain or loss qualifies for preferential long-term capital gains tax rates, regardless of how long the heir actually owns the property.

2. Carryover Basis for Lifetime Gifts (IRC Section 1015)

When a donor makes a lifetime gift of appreciated property, the recipient takes the donor's adjusted cost basis (a carryover basis), alongside the donor's holding period.

• The Dual Basis Rule for Loss Property: If the fair market value of the gifted property at the date of the gift is less than the donor's adjusted basis (depreciated/loss property), a specialized dual basis rule applies upon the donee's subsequent sale:
  1. Gain Basis: To calculate a gain, the basis is the donor's adjusted basis.
  2. Loss Basis: To calculate a loss, the basis is the fair market value at the date of the gift.
  3. No Gain / No Loss Window: If the donee sells the property at a price between the FMV at the gift date and the donor's basis, neither gain nor loss is recognized.

Strategic Rule of Thumb: Highly appreciated assets should generally be retained until death to capture the IRC Section 1014 stepped-up basis. Conversely, selling depreciated investment property before gifting cash may preserve a usable loss, subject to related-party and other rules; gifting can still serve non-tax objectives; the owner should sell the asset personally to realize and harvest the capital loss on their own tax return.

3. Income in Respect of a Decedent (IRD) under IRC Section 691

The most dangerous trap in retirement wealth transfer involves Income in Respect of a Decedent (IRD). IRD encompasses all income and earnings that the decedent was entitled to receive, but which were not properly includible on the decedent's final personal income tax return prior to death.

• Common IRD Assets:
  • Traditional IRAs, SEP-IRAs, and SIMPLE IRAs;
  • Qualified retirement plans: 401(k), 403(b), and 457(b) balances;
  • Non-qualified deferred compensation and unpaid bonuses;
  • Non-qualified annuity contract earnings (growth over basis);
  • Accrued interest on Series EE/I U.S. savings bonds.
• NO Basis Step-Up: Under IRC Section 1014(c), IRD assets receive zero basis step-up at death. The inherited funds retain their pre-tax character, and the inherited pre-tax portion is taxable; documented after-tax basis is recovered under the applicable rules at the beneficiary's marginal tax rate.
• The IRC Section 691(c) Deduction: When an estate is subject to federal estate tax and includes IRD assets, the beneficiary faces potential double taxation: federal estate tax on the account value plus ordinary income tax upon withdrawal. To mitigate this double taxation, IRC Section 691(c) allows the beneficiary an itemized income tax deduction for the federal estate tax paid that was attributable to the net IRD asset included in the gross estate.

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Transfer Tax and Basis Reference Matrix

The following comprehensive table synthesizes federal transfer tax and income tax basis rules:

Sources and review date

Checked October 19, 2026: IRS 2026 estate/gift and GST exclusions. Annual limits apply to the year explicitly identified; examples state their assumptions.