© 2026 Wealth Care Lawyer — Klaus Gottlieb, Esq. Serving the California Central Coast.
Jurisdiction: Federal; California conformity Primary Authorities: I.R.C. §§ 2036, 2038, 2501, 2511, 2512; Treas. Reg. § 25.2511-2; I.R.C. § 1014 (Basis Step-Up) Last Reviewed: 2026 Category: Gift Tax | Estate Tax | Advanced Planning
A gift is complete for federal tax purposes when the donor relinquishes dominion and control over the transferred property — the ability to reclaim it, redirect it, or change who receives it. A gift is incomplete when the donor retains any such power. Treas. Reg. § 25.2511-2 is the governing standard: a transfer is incomplete to the extent the donor has reserved a power to revest beneficial ownership, change the beneficial interests, or alter the time or manner of enjoyment.
The key insight is that incompleteness is not always a flaw to be corrected. It is sometimes engineered deliberately. A donor who wants to retain practical access or flexibility — or who holds highly appreciated, low-basis property — may find that an intentionally incomplete transfer structure is substantially more valuable to their family than a completed gift.
The central tradeoff: an incomplete gift keeps the asset in the donor’s taxable estate under I.R.C. § 2038, which means the asset receives a step-up in cost basis at death under I.R.C. § 1014. For donors whose estates are below the federal exemption (currently $15 million per individual under the OBBBA), that step-up costs nothing in estate tax. For donors above the exemption, the step-up may or may not be worth the estate tax cost — which requires actual modeling.
A transfer is complete when the donor has so parted with dominion and control as to leave no power to change its disposition — whether for the donor’s own benefit or for the benefit of another. The standard is practical, not formal.
A gift is incomplete if the donor retains:
A retained power held only in conjunction with an adverse party — someone whose interests would be adversely affected by the exercise of the power — does not cause incompleteness. This exception is important in certain trust structures where a co-trustee with a conflicting economic interest must consent to distributions.
The same logic that makes a gift incomplete for gift tax purposes generally causes the transferred assets to remain in the donor’s taxable estate. I.R.C. § 2038 includes any property the decedent transferred during life if, at death, they retained the power to alter, amend, revoke, or terminate the transfer. I.R.C. § 2036 includes property transferred with a retained right to income or possession.
This is the central tension: the retained control that prevents a taxable gift also keeps the property in the estate. Whether this is a problem depends entirely on whether the estate is taxable — and, if so, whether the estate tax cost exceeds the capital gains benefit of the step-up.
Property included in a decedent’s gross estate receives a step-up in cost basis to fair market value at the date of death, eliminating embedded capital gain accumulated during the donor’s lifetime. Property given away as a completed gift during the donor’s lifetime carries the donor’s original (carryover) basis — no step-up occurs at death because the property is not in the estate.
For highly appreciated, low-basis property — a stock purchased decades ago, a rental property purchased in the 1980s, a family business interest — the dollar value of the step-up can dwarf any gift tax planning benefit.
Four questions, asked together, determine whether an incomplete structure is the right approach:
1. Does the donor hold highly appreciated, low-basis property?
The higher the embedded gain, the more valuable the step-up. For a donor holding $3 million of appreciated stock with a $200,000 basis, the embedded gain is $2.8 million. At a combined 23.8% federal rate (20% long-term capital gains plus 3.8% net investment income tax), the tax on that gain is roughly $667,000. If the property passes through the estate, that liability is eliminated. If it was gifted away years earlier, the recipient inherits the low basis and owes the full amount when they sell.
For assets with modest appreciation relative to their current value, the step-up benefit is small and a completed gift may be preferable for other reasons.
2. Is the donor’s estate likely to be taxable?
Under the OBBBA, the federal exemption is $15 million per individual ($30 million per married couple), indexed for inflation. For donors clearly below this threshold, keeping appreciated assets in the estate costs nothing in estate tax and preserves the step-up. The incomplete gift is often the correct default in this range.
For donors above the exemption, the estate tax cost of keeping the asset in the estate (40% on the excess) must be weighed against the capital gains benefit of the step-up. This comparison requires actual numbers, not general principles.
3. Does the donor need to retain practical access?
Completed gifts are irrevocable. A donor who is uncertain about future financial needs — long-term care costs, business reversals, changed family circumstances — may be unwilling to make irrevocable transfers of significant assets. Incomplete structures preserve the practical ability to access or redirect assets if circumstances change, at the cost of the estate inclusion they produce.
4. Is the planning goal income tax management rather than estate tax reduction?
Several incomplete gift vehicles are designed primarily to achieve income tax outcomes — state income tax avoidance, capital gains deferral, or grantor trust income tax treatment — rather than estate tax reduction. For these purposes, the estate inclusion consequence is accepted (or irrelevant) and the incompleteness is the mechanism that enables the tax result.
📌 PLANNING NOTE: The incomplete gift is often the right answer for a donor who holds highly appreciated property and has an estate well below the federal exemption. Keeping the asset in the estate preserves the step-up at no estate tax cost. The planning question is not “should I give this away?” but “do I have a reason to give this away that outweighs the loss of the step-up?” In many cases, the honest answer is no.
The most common incomplete transfer in California estate planning is the revocable living trust. The settlor transfers assets to the trustee but retains the power to amend or revoke the trust entirely. The gift is wholly incomplete — no gift tax return is required, and no exemption is consumed. The assets remain fully in the estate and receive a full basis step-up at death.
This is not usually framed as an “incomplete gift strategy,” but technically that is what it is. The revocation power is the defining feature. For donors below the exemption with appreciated assets, the revocable trust is simultaneously the right probate-avoidance tool and the right basis-preservation tool.
A GRAT is an irrevocable trust in which the grantor transfers assets and retains the right to receive an annuity for a fixed term. At the end of the term, any remaining trust assets pass to the remainder beneficiaries. The gift is partially complete at funding: the taxable gift equals the present value of the remainder interest — the value of the assets minus the present value of the retained annuity stream, discounted at the § 7520 rate.
If the assets appreciate faster than the § 7520 rate, the excess passes to the remainder beneficiaries as a completed transfer that was not subject to gift tax at that amount. A “zeroed-out GRAT” sets the annuity high enough that the remainder interest has near-zero present value at funding, meaning virtually no gift tax is triggered regardless of how much the assets appreciate.
The practical use case: a donor holds a concentrated stock position or a business interest expected to significantly outperform the § 7520 rate. A GRAT transfers the upside to the next generation gift-tax-free while the grantor retains the annuity stream. If the grantor dies during the trust term, the assets are pulled back into the estate under § 2036 — so GRATs work best for donors in good health with assets likely to appreciate sharply over a short term.
An IDGT is structured to be outside the estate for estate tax purposes (the transfer is a completed gift) but still treated as the grantor’s own property for income tax purposes. The “defect” — a retained power under I.R.C. §§ 671–679 that causes grantor trust income tax treatment — does not, if carefully drafted, also cause estate inclusion under §§ 2036 or 2038.
The result: the grantor pays income tax on trust income as if the assets were still theirs, which is itself an additional untaxed wealth transfer to the trust beneficiaries. The trust assets grow without income tax drag. The grantor’s estate shrinks by the taxes paid on trust income.
IDGTs are typically funded by a sale of assets to the trust for a promissory note, not a gift. Because the trust is a grantor trust — the grantor is selling to themselves for income tax purposes — no capital gain is recognized on the sale. The note bears interest at the applicable federal rate (AFR), which is typically lower than expected investment returns; the spread accrues to the beneficiaries without gift tax.
A QPRT transfers a personal residence to a trust while the grantor retains the right to live in it for a fixed term. The taxable gift at funding is the present value of the remainder interest — the value of the home discounted by the retained term interest and the § 7520 rate. If the grantor outlives the term, the home passes to the remainder beneficiaries at that reduced gift tax value, and any appreciation during the trust term escapes gift and estate tax entirely.
If the grantor wants to remain in the home after the trust term expires, they must pay fair market rent — an additional wealth transfer that is not a taxable gift. If the grantor dies during the term, the full value of the home is included in the estate under § 2036, and the GRAT-like mortality risk applies.
QPRTs work best with a higher § 7520 rate (which increases the value of the retained term, reducing the taxable gift), an appreciating property, and a grantor who is confident of outliving the trust term.
An ING trust is a structure specifically designed to be an incomplete gift for gift tax purposes while simultaneously not being a grantor trust for income tax purposes — the opposite of an IDGT. This combination allows the trust to be a separate taxpayer domiciled in a no-income-tax state (Nevada, Delaware, Wyoming), potentially sheltering trust income from California’s high state income tax rates.
The incomplete gift result is achieved by giving the grantor a retained power sufficient to prevent completion — typically a limited withdrawal right or a distribution committee of adverse parties. The trust is then treated as a separate taxpayer in its domicile state rather than California.
California’s Franchise Tax Board has been aggressive in challenging ING trusts, asserting that California-source income remains taxable regardless of trust domicile. These structures carry audit risk in California and require a California-specific tax opinion before implementation.
| Factor | Completed Gift | Deliberately Incomplete Transfer |
|---|---|---|
| Gift tax at transfer | Taxable event; uses exemption or pays tax | No gift; no exemption consumed |
| Estate inclusion at death | No — asset out of estate | Yes — retained control causes inclusion |
| Basis step-up at death | No — donee takes carryover basis | Yes — estate inclusion generates step-up |
| Donor access after transfer | None — irrevocable | Yes, to extent of retained power |
| Best situation | Estate above exemption; modest appreciation; donor committed to irrevocability | Estate below exemption; high appreciation; flexibility needed |
| Primary risk | Loss of step-up; irrevocability | Estate tax if estate grows above exemption |
Mary holds 10,000 shares of appreciated stock currently worth $2,000,000. Her original cost basis is $100,000. Her estate is $8 million — well below the $15 million federal exemption. She is considering gifting the shares to her son David.
Scenario A: Mary makes a completed gift today.
David receives the shares with Mary’s carryover basis of $100,000. When David sells for $2,000,000, his taxable gain is $1,900,000. At a combined 23.8% federal rate (20% long-term capital gains + 3.8% NIIT), he owes $452,200 in federal capital gains tax.
Mary’s estate is reduced by $2,000,000. Because her estate is below the exemption, that reduction produces zero estate tax savings.
Net family benefit of the completed gift: −$452,200 (the capital gains tax that would not have been owed had the asset passed through the estate).
Scenario B: Mary holds the shares until death (incomplete — in the revocable trust).
At Mary’s death, the shares are included in her estate at a fair market value of $2,000,000 (assumed flat for simplicity). David inherits them with a stepped-up basis of $2,000,000. When David sells, his taxable gain is zero. Federal capital gains tax owed: $0.
Mary’s estate remains at $8 million — still well below the exemption. Estate tax owed: $0.
The comparison:
| Completed Gift Now | Hold Until Death | |
|---|---|---|
| David’s basis | $100,000 (carryover) | $2,000,000 (stepped-up) |
| Capital gains tax on sale | $452,200 | $0 |
| Estate tax cost | $0 | $0 |
| Net family cost | $452,200 | $0 |
The completed gift costs the family $452,200 with no offsetting benefit, because Mary’s estate was never going to be taxable. The only question a completed gift answers — “how do I reduce my taxable estate?” — was not a question Mary needed answered.
If Mary’s estate were instead $20 million — above the exemption — the analysis changes. The completed gift removes $2,000,000 from the taxable estate, saving approximately $800,000 in estate tax (at the 40% rate). That saving exceeds the $452,200 capital gains cost, making the completed gift the better outcome. The crossover point depends on each client’s specific numbers and requires a modeled comparison, not a rule of thumb.
The hold-until-death scenario in this example is the simplest form of an incomplete transfer — appreciated assets sitting in a revocable trust, untouched until death. Other incomplete gift vehicles can deliver tangible economic benefits to the beneficiary during the donor’s lifetime: a GRAT distributes remaining trust assets to remainder beneficiaries when the term ends; an IDGT can make distributions to family members while the grantor continues paying income tax on trust earnings; a QPRT passes the residence to the remainder beneficiaries at the end of the retained term. These structures are explored in detail in the Vehicles section above.
Lean toward a completed gift when:
Lean toward an incomplete transfer when:
The most common mistake:
Making an irrevocable completed gift of highly appreciated property in a low-estate-tax situation, when holding the property until death would have given the recipient a stepped-up basis at no estate tax cost. The capital gains tax the recipient will eventually pay on the carryover basis is a real, unrecoverable cost — and it is often larger than any estate tax benefit the completed gift achieved.
⚠️ COMMON ERROR: “Getting assets out of the estate” is treated as an unconditional goal in many planning conversations. For donors below the federal exemption, it is not. Every completed gift of appreciated property forfeits the step-up. That forfeiture should be modeled in dollar terms before any completed gift of appreciated property is recommended.
NOT LEGAL ADVICE. This article is prepared for professional reference and educational purposes only. It does not constitute legal advice and does not create an attorney-client relationship. Legal and tax professionals must conduct their own independent research and due diligence before relying on any analysis contained in this article. Laws, regulations, and administrative interpretations are subject to change. Application of these principles to specific facts requires professional judgment that this article cannot substitute for.
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