Grantor Retained Annuity Trust (GRAT) for Pre-IPO Founders

A Grantor Retained Annuity Trust is an estate-freeze technique — not a tax shelter, not a loophole, and not aggressive. Congress wrote the rules for GRATs into IRC section 2702 in 1990, and the IRS publishes the hurdle rate every month. The structure is mechanical: the founder puts assets in, gets an annuity back, and whatever appreciation exceeds the hurdle rate passes to the next generation free of transfer tax. For pre-IPO founders holding stock that could multiply at IPO, the GRAT is the most capital-efficient way to move that upside out of the taxable estate.

This is a decision-stage article. If you are a founder holding pre-IPO equity worth $5 million or more, your estate planner has already mentioned GRATs. The question is timing, structure, and whether to combine the GRAT with other tools before the TCJA exemption sunsets at the end of 2025.

How a zeroed-out GRAT works: the mechanics

The founder (grantor) creates an irrevocable trust and transfers pre-IPO shares into it. The trust document specifies a fixed annuity that the trust will pay back to the founder over a term of years — typically two or three years for pre-IPO stock. The annuity is calculated so that its present value, discounted at the IRS Section 7520 rate, equals the full value of the contributed assets. This makes the taxable gift approximately zero (technically a few dollars, because the IRS requires a non-zero remainder).

During the trust term, the GRAT pays the annuity to the founder — in cash, in kind (returning shares), or a mix. At the end of the term, whatever assets remain in the GRAT after all annuity payments pass to the remainder beneficiaries. The remainder transfer is not a gift because the entire gift tax value was consumed by the retained annuity at inception.

The GRAT is a grantor trust for income tax purposes under IRC section 671-679. The founder pays income tax on all trust income during the term. This is a feature, not a bug: the income tax payments are not treated as additional gifts under IRC section 2511, so the trust grows tax-free at the founder's expense — further depleting the taxable estate.

The Section 7520 hurdle rate: the only number that matters

The IRS publishes the Section 7520 rate monthly, based on 120% of the applicable federal midterm rate. In mid-2025, the rate is approximately 5.8%. This is the bogey. If the GRAT assets appreciate at exactly 5.8% annually, the annuity payments return the entire value to the founder and the remainder beneficiaries receive nothing. If the assets appreciate at 50% (as pre-IPO stock often does at IPO), the annuity payments return a fraction of the trust value and the remainder beneficiaries receive a windfall — all transfer-tax-free.

Higher 7520 rates make GRATs less efficient because the annuity payments must be larger, leaving less for the remainder. The current rate environment (5-6%) is moderate. GRATs were most powerful during the near-zero rate era of 2020-2021, when a 7520 rate of 0.4% meant almost any positive return cleared the hurdle. At 5.8%, the hurdle is real — but pre-IPO stock expected to appreciate 100-500% at IPO clears it by orders of magnitude.

Worked example: founder with $30 million in pre-IPO stock

Sarah, age 42, is the co-founder and CTO of a Series D startup. She holds 2 million shares with a current 409A valuation of $15 per share — $30 million in total. The company's last preferred round priced at $40 per share, and the IPO (expected in 18-24 months) is projected at $60 per share. Sarah's cost basis in the shares is $0.10 per share (founder stock), or $200,000 total.

Sarah's full estate includes:

• Pre-IPO stock: $30,000,000 (409A value; projected $120,000,000 at IPO)
• Vested RSUs in a prior company (public): $4,000,000
• Primary residence: $3,000,000
• Traditional 401(k): $1,200,000
• Roth IRA: $400,000
• Cash and other assets: $1,400,000
• Total estate: $40,000,000 (current); projected $130,000,000 post-IPO

Scenario A: no GRAT — IPO in 2026, death in 2040

The stock goes to $60 per share at IPO. Sarah's 2 million shares are now worth $120 million. Assume the estate grows to $150 million by 2040. With a post-sunset exemption of approximately $7 million (or $14 million with portability if married), the taxable estate is approximately $136 million. At the 40% federal estate tax rate: $54,400,000 in federal estate tax.

Scenario B: two-year zeroed-out GRAT funded in 2025

Sarah funds a 2-year zeroed-out GRAT with 1.5 million shares valued at $15 per share — $22.5 million at the 409A valuation. The Section 7520 rate is 5.8%. The annuity is structured to return $22.5 million plus the 5.8% hurdle over two years: approximately $12.14 million in Year 1 and $12.14 million in Year 2 (total annuity payments of approximately $24.27 million).

The IPO occurs 18 months after the GRAT is funded. The stock price goes from $15 to $60 per share. The 1.5 million shares in the GRAT are now worth $90 million. The GRAT pays the Year 1 annuity of $12.14 million by returning approximately 202,333 shares (at $60 per share). The GRAT pays the Year 2 annuity of $12.14 million by returning another 202,333 shares. Total shares returned to Sarah: approximately 404,666 shares.

Shares remaining in the GRAT at termination: 1,095,334 shares worth approximately $65,720,040 at $60 per share. This entire amount passes to Sarah's remainder beneficiaries — her children's dynasty trust — with zero gift tax and zero estate tax.

Sarah used approximately $0 of her $13.61 million lifetime gift tax exemption (the GRAT was zeroed out). She retains 904,666 shares (500,000 she never contributed plus 404,666 returned as annuity payments) worth $54.28 million, plus her other assets. Her taxable estate is approximately $65 million instead of $130 million — and the $65.7 million that passed through the GRAT is permanently excluded, including all future appreciation.

Estimated estate tax savings: at least $26,280,000 (40% of the $65.7 million transferred). If the stock continues to appreciate post-IPO, the savings grow further.

The basis trade-off: carryover basis under IRC section 1015

The 1,095,334 shares that pass to the remainder beneficiaries carry Sarah's original basis: $0.10 per share, or approximately $109,533 total. When the beneficiaries eventually sell at $60 per share, they recognize approximately $65.6 million in capital gains. At the combined 23.8% federal rate (20% long-term capital gains plus 3.8% net investment income tax under IRC section 1411), the capital gains tax is approximately $15,613,000.

Had those shares remained in Sarah's estate, the beneficiaries would receive a stepped-up basis under IRC section 1014, eliminating the capital gains entirely. The lost step-up costs $15.6 million. But the estate tax avoided is $26.3 million. Net benefit: approximately $10,670,000.

The math tilts further in the GRAT's favor as the stock price increases. If the shares appreciate to $100 post-IPO, the estate tax savings on $65.7 million at the higher valuation would exceed $40 million, while the capital gains cost (still based on the $0.10 basis) rises proportionally less. For low-basis, high-growth assets, the GRAT almost always wins the basis trade-off.

Rolling GRATs: mitigating mortality risk and timing uncertainty

If Sarah dies during the 2-year GRAT term, the entire trust is included in her taxable estate under IRC section 2036 — as if the GRAT never existed. This is the primary structural risk. A single 2-year GRAT is an all-or-nothing bet on Sarah surviving 24 months.

The standard mitigation is a rolling GRAT strategy. Instead of one 2-year GRAT with 1.5 million shares, Sarah creates three successive 2-year GRATs:

• GRAT 1 (January 2025): 500,000 shares, 2-year term
• GRAT 2 (July 2025): 500,000 shares, 2-year term
• GRAT 3 (January 2026, funded with annuity payments from GRAT 1): 2-year term

Each GRAT that completes its term locks in the transfer permanently. If Sarah dies during GRAT 3, only GRAT 3's assets return to the estate — GRATs 1 and 2 have already distributed their remainders. Rolling GRATs also allow the founder to re-GRAT shares that were returned as annuity payments, compounding the estate-freeze effect over multiple cycles.

The rolling strategy is especially important when the IPO timeline is uncertain. If the IPO is delayed, the first GRAT may terminate before the liquidity event, returning shares to Sarah at the low pre-IPO valuation. She simply rolls those shares into a new GRAT and tries again. The cost of a GRAT that fails to beat the hurdle rate is zero — the founder gets everything back.

Retirement accounts: what cannot go into a GRAT

Sarah's $1.2 million 401(k) and $400,000 Roth IRA cannot be contributed to a GRAT. Transferring a qualified retirement account to any trust triggers a taxable distribution under IRC section 408(d) for IRAs or a plan distribution event for 401(k)s. The full balance would be taxed as ordinary income in the year of transfer — approximately $444,000 in federal income tax on the 401(k) at the 37% rate, plus state taxes.

These accounts remain in the taxable estate. For non-spouse beneficiaries (Sarah's children), the SECURE Act 2.0 requires complete distribution within 10 years of the account holder's death under IRC section 401(a)(9)(H). The traditional 401(k) is subject to both estate tax and income tax under the income-in-respect-of-a-decedent rules (IRC section 691) — the worst of both worlds. The Roth IRA distributes tax-free under IRC section 408A(d)(1) but is still included in the gross estate. Strategic Roth conversions during Sarah's lifetime can shift assets from the tax-inefficient 401(k) to the tax-efficient Roth, reducing the overall tax burden on heirs.

State estate tax interaction

Twelve states plus the District of Columbia impose state estate taxes. If Sarah lives in Washington state (home to many tech founders), the state estate tax exemption is approximately $2.193 million with a top rate of 20%. A $130 million estate would owe approximately $25 million in Washington estate tax on top of the federal estate tax. Assets transferred through a completed GRAT are removed from the state estate tax base in states that follow federal gift tax treatment — and most do.

Massachusetts taxes estates above $2 million with no portability. New York's exemption is approximately $6.94 million, but the state's cliff provision taxes the entire estate (not just the excess) if the estate exceeds 105% of the exemption. Oregon's exemption is $1 million. For founders in these states, the GRAT provides a double benefit: federal and state estate tax avoidance on the transferred amount. Connecticut is the notable exception — it imposes its own gift tax, so the GRAT transfer may trigger state gift tax even though the federal gift is zeroed out.

GRAT vs. SLAT: which comes first?

For a married founder with both pre-IPO stock and diversified assets, the optimal sequence is typically GRAT first for the pre-IPO equity (zeroed-out, preserving the full lifetime exemption), then SLAT for the diversified portfolio (using the $13.61 million exemption before the TCJA sunset). The GRAT handles the concentrated, high-growth asset; the SLAT handles the rest. This combination can remove the majority of a $50-100 million estate from transfer tax exposure while preserving the exemption and maintaining indirect access through the beneficiary spouse.

Key takeaways

• A zeroed-out GRAT transfers appreciation above the IRS Section 7520 hurdle rate (approximately 5.8% in mid-2025) to remainder beneficiaries with zero gift tax cost. For pre-IPO stock expected to multiply at IPO, this is the most capital-efficient estate-freeze tool available.
• The founder retains the annuity stream and pays income tax on trust income during the term. If the stock fails to beat the hurdle rate, the founder gets everything back — the downside is zero.
• Mortality risk is the primary structural risk: if the founder dies during the GRAT term, the assets are included in the taxable estate under IRC section 2036. Rolling 2-year GRATs mitigate this by locking in completed transfers and limiting exposure to the current GRAT.
• Remainder beneficiaries receive carryover basis under IRC section 1015, not a step-up under IRC section 1014. For founder stock with a near-zero basis, the capital gains tax on sale is significant — but almost always less than the 40% estate tax avoided.
• Retirement accounts (401(k)s, IRAs) cannot be contributed to a GRAT without triggering immediate income recognition. These accounts remain in the estate and are subject to the SECURE Act 10-year rule under IRC section 401(a)(9)(H) for non-spouse beneficiaries.
• State estate taxes in 12 states plus DC compound the federal exposure. GRATs remove assets from both federal and state estate tax bases in most states. Connecticut's state gift tax is the exception to watch.
• For married founders: GRAT the pre-IPO equity first (preserving the lifetime exemption), then use a SLAT for diversified assets before the TCJA sunset on December 31, 2025. The combination maximizes the estate freeze across both concentrated and diversified holdings.