Step-Up in Basis for Inherited Property in New York

When you inherit real estate, stocks, or other capital assets in New York, you don't inherit the original owner's tax history with them. Under the step-up in basis rule, your cost basis is reset to the property's fair market value on the date of death — not what the decedent originally paid.

This single rule eliminates most accumulated capital gains on inherited property. New York State fully conforms to it. But there's a specific limitation that affects jointly owned property in New York — one that catches many surviving spouses off guard when they eventually sell.

What Basis Is and Why It Matters

When someone buys a capital asset — a house, a stock portfolio, a cooperative apartment — the purchase price establishes their "cost basis." When they sell, they owe capital gains tax on the difference between the sale price and their basis.

Without a step-up rule, heirs would inherit both the asset and the decedent's original basis. Selling a house purchased in 1975 for $80,000 and now worth $1.2 million would generate $1.12 million in capital gain — and a substantial tax bill.

The step-up in basis prevents this.

How the Step-Up Works Under IRC § 1014

Under Internal Revenue Code § 1014, when an asset passes through an estate, the heir's basis is automatically adjusted to the asset's fair market value (FMV) on the date of death. New York State fully conforms to this federal rule for state capital gains tax purposes.

Example: A parent purchased a Brooklyn townhouse in 1985 for $200,000. By the time of their death in June 2026, it's appraised at $2,500,000. The heir inherits the property with a new basis of $2,500,000. The executor sells it three months later for $2,500,000. Capital gain: zero.

The $2,300,000 of appreciation that accumulated during the parent's lifetime is entirely erased from the tax ledger. This is legal, permanent, and requires no special filing — it's automatic upon inheritance.

If the heir holds the property and it continues to appreciate, only the gain above the stepped-up basis is taxable. Sell for $2,700,000 in 2028 and the taxable gain is $200,000 — not $2,500,000.

The New York Limitation: Common Law vs. Community Property

Here's where New York differs meaningfully from states like California or Texas.

In community property states, virtually all property acquired during marriage is treated as equally owned by both spouses. When one dies, both halves of the property receive the step-up to the date-of-death fair market value — even the surviving spouse's half. The entire property gets a new basis.

New York is a common law state. The step-up applies only to the deceased spouse's share of the property.

For jointly owned real estate, each spouse owns 50%. When one spouse dies:

• The deceased spouse's 50% share receives the step-up to date-of-death fair market value.
• The surviving spouse's 50% retains their original cost basis — typically the original purchase price, from however many years ago.

Example: A couple bought a Manhattan co-op in 1992 for $400,000 ($200,000 each). One spouse dies in 2026 when the unit is worth $2,000,000. The deceased spouse's $200,000 basis steps up to $1,000,000 (their 50% of the $2,000,000 date-of-death value). The surviving spouse's basis remains $200,000.

Total combined basis: $1,200,000.

If the surviving spouse sells for $2,200,000 the following year, the taxable gain is $1,000,000 — not zero. That's a significant tax bill, substantially larger than it would be in a community property state.

This distinction matters most for surviving spouses planning to sell soon after the death. Understanding the partial step-up — and calculating the actual taxable gain — before a sale is essential.

Why a Date-of-Death Appraisal Is Not Optional

The step-up is calculated as of the exact date of death. Without a documented fair market value on that specific date, there's no defensible basis to report when the property is eventually sold.

For real estate, this means a formal property appraisal conducted by a qualified independent appraiser. For publicly traded stocks, the IRS uses the average of the high and low trading price on the date of death. For co-op shares, closely held business interests, and collectibles, specialized valuations are required.

Appraisals should be obtained promptly — during estate administration, not years later when a sale is pending. A retroactive appraisal is harder to defend and more likely to attract IRS scrutiny.

The same appraisal that documents the stepped-up basis also provides the values reported on Form ET-706 (the New York State Estate Tax Return) for estates above the threshold. A single professional appraisal serves both purposes.

The Step-Up and Transfer-on-Death Deeds

New York enacted a Transfer-on-Death (TOD) deed statute in July 2024. Property transferred via a TOD deed bypasses the Surrogate's Court and passes directly to the designated beneficiary at death.

The step-up in basis applies to TOD property. Assets that pass outside of probate — through TOD designations, joint tenancy with right of survivorship, or beneficiary designations on retirement accounts — can still receive the step-up if they are included in the decedent's gross estate for federal estate tax purposes under IRC § 2033 and related provisions.

For most TOD transfers, the beneficiary inherits with a basis equal to the date-of-death fair market value.

One caution specific to New York's TOD statute: if the estate is insolvent, creditors have an 18-month window to reach back into TOD property. Title insurance companies are aware of this and may decline to insure a sale of TOD property until the 18-month window closes. This is a separate concern from the basis calculation, but it affects the practical timeline for selling.

Co-Op Apartments and the Step-Up

New York City cooperative apartments are legally personal property — shares of stock in a housing corporation combined with a proprietary lease. They are not classified as real estate under New York law.

The step-up in basis rules apply to them exactly the same way they apply to any capital asset. If a decedent held co-op shares purchased for $350,000, and those shares are valued at $1,600,000 at date of death, the heir inherits with a $1,600,000 basis. A sale at $1,600,000 produces zero capital gain.

The same joint ownership limitation applies: if a married couple held co-op shares jointly, only the deceased spouse's half receives the step-up.

What to Document and Keep

When you inherit property in New York, retain:

1. The date of death
2. An independent appraisal or documented fair market value as of that date
3. Any post-inheritance capital improvements (these can be added to the basis)
4. The eventual sale price and closing costs

The capital gain at sale is the difference between the sale price (net of closing costs) and the stepped-up basis, adjusted for any improvements. The holding period for tax rate purposes begins at the date of death, not the date of the original purchase — so even if you sell within a few months, inherited property held more than 12 months typically qualifies for long-term capital gains rates. Many tax advisors treat inherited property as automatically long-term regardless of actual holding period; confirm with your CPA for the specific facts.

The Relationship to Estate Tax

The step-up in basis and the New York estate tax are calculated using the same date-of-death values. An estate with real estate valued at $2,000,000 uses that $2,000,000 figure both as the stepped-up basis for heirs and as part of the gross estate for ET-706 purposes.

There's no trade-off between them. Higher values benefit heirs through a larger step-up but also increase the estate's taxable value. Accurate, independent appraisals at death are in everyone's interest.

For estates with significant real estate, investment portfolios, or business interests, the New York Final Tax & Estate Tax Guide covers the appraisal documentation process, the basis reporting framework, and the estate tax return sequence that runs in parallel.

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