Pennsylvania Step-Up in Basis: Why PA Denies It for Joint Property

Every heir who inherits property and later sells it faces a capital gains tax calculation. The federal government generally allows a full "step-up" in basis to the property's fair market value at the date of death, eliminating federal capital gains tax on all appreciation that occurred during the decedent's lifetime. Pennsylvania does not always follow this rule — and where it diverges, the tax bill can be devastating.

Understanding Pennsylvania's approach to step-up in basis is essential for executors, surviving spouses, and beneficiaries planning to sell inherited real estate or investments.

What Step-Up in Basis Means

When you inherit property, your "basis" in that property — the starting point for calculating capital gains — determines how much tax you owe when you sell it. Without a step-up, you'd inherit the decedent's original purchase price as your basis. With a step-up, your basis is reset to the property's fair market value on the date of the decedent's death.

Example: A parent bought stock for $10,000 in 1985. By the time of their death, it's worth $90,000. Without a step-up, the child who inherits the stock has a $10,000 basis and owes capital gains tax on $80,000 of gain when they sell. With a full step-up, the child's basis becomes $90,000 — selling immediately generates zero capital gains.

Under federal law, this step-up applies broadly to inherited property. Under Pennsylvania law, it depends on how the property was titled.

Pennsylvania's Rule: No Step-Up for Two Forms of Joint Ownership

Pennsylvania's personal income tax code explicitly denies a step-up in basis for two specific categories of property:

1. Property acquired as a surviving joint tenant with right of survivorship. If a property is held by two or more people as joint tenants with right of survivorship (JTWROS) and one owner dies, the surviving owner does not receive a step-up in basis for the inherited share.

2. Property inherited by a surviving spouse from property owned as tenants by the entireties. This form of joint ownership is unique to married couples in Pennsylvania. When one spouse dies, the other inherits their interest — but without any basis adjustment to the date-of-death value.

For every other form of property transfer — property received through a will, through intestate succession, or through a trust — Pennsylvania generally does follow the federal step-up rule.

The Surviving Spouse Tax Trap

This rule creates a significant and often-unexpected tax liability for surviving spouses who sell the marital home.

The scenario: A couple bought their home in 1992 for $80,000. By the time the first spouse dies in 2025, the home is worth $450,000. The surviving spouse wants to sell.

Federal tax treatment: The IRS allows a step-up for the deceased spouse's half of the property. For a home held as tenants by the entireties, federal law typically treats the surviving spouse as receiving a step-up for the entire property value (in common law states). Federal capital gains on a $450,000 sale: potentially zero or minimal after the $250,000 primary residence exclusion.

Pennsylvania tax treatment: Pennsylvania denies the step-up for tenants by the entireties property. The surviving spouse's basis for Pennsylvania purposes remains the original $80,000 purchase price (plus any documented capital improvements). If the home sells for $450,000, Pennsylvania taxes the full $370,000 of gain at the applicable Pennsylvania personal income tax rate — even though the federal government may treat the gain as zero.

This is not a rounding error or a technicality. On a $370,000 Pennsylvania gain, the state income tax bill at the current rate can easily exceed $10,000.

The Executor's Dual-Ledger Obligation

For estates with joint property, the executor — and any CPA or accountant handling the estate — must maintain two separate records of basis:

• The federal basis (stepped up to date-of-death value for most inherited property)
• The Pennsylvania basis (original cost for tenants by the entireties and JTWROS property)

These records must be provided to the surviving spouse or inheriting beneficiary so they can report the correct gain on both their federal 1040 and Pennsylvania PA-40 when they eventually sell the property. Beneficiaries who don't receive this dual-basis documentation often make the mistake of using their federal basis for Pennsylvania returns — an understatement of Pennsylvania gain that can result in audit, additional tax, interest, and penalties years later.

What Does Get a Step-Up in Pennsylvania

Despite the joint property exception, Pennsylvania does permit basis step-up in most other inheritance scenarios:

• Property received through the decedent's will passing to a sole heir
• Property received through intestate succession
• Property held in a trust where the beneficiary receives a full distributive share
• Property titled solely in the decedent's name (no joint owner)

In these cases, the beneficiary's Pennsylvania basis matches the federal step-up basis — the fair market value as of the date of death. The value reported on the Pennsylvania inheritance tax return (REV-1500) is typically the same value used to establish the stepped-up basis.

Timing the Sale to Establish a Defensible Basis

For estate-held real estate, Pennsylvania provides a practical valuation shortcut: if real estate is sold within 15 months of the date of death in an arm's-length transaction, the Department of Revenue will accept the gross sale price as the date-of-death fair market value. This eliminates the need for a separate historical appraisal and gives the estate a defensible basis number for both inheritance tax and capital gains tax purposes.

This 15-month safe harbor is especially useful when the estate needs to sell quickly and no appraisal was obtained at death. The sale price serves as the definitive documentation of value.

For Investment Accounts: The Brokerage Basis Problem

Joint brokerage accounts held with right of survivorship create the same no-step-up problem for Pennsylvania. If a husband and wife held a joint investment account that was accumulated with funds entirely from one spouse's earnings, and it contains appreciated stock purchased years ago, the surviving spouse inherits the account without any Pennsylvania basis adjustment.

When the surviving spouse later sells appreciated positions in that account, they owe Pennsylvania income tax on gains calculated from the original purchase price. The capital gains tax owed can be significant on positions held for many years with substantial appreciation.

The solution, where feasible, is to sell appreciated positions within the account before the first spouse's death to reset the basis through realized gains — or to restructure the account to title appreciated positions individually rather than jointly. Both require advance planning and professional tax guidance.

How This Affects the Estate's PA-41 Filing

If the estate sells joint-tenancy or tenants-by-entireties property during the administration period before distributing it to the surviving spouse, the sale proceeds are reported on the PA-41 fiduciary income tax return. The capital gain calculation for Pennsylvania purposes uses the original (unadjusted) basis, potentially creating a significant PA-41 tax liability even when the federal Form 1041 shows a minimal or zero gain.

Executors who prepare the federal Form 1041 and then copy those figures to the PA-41 without adjusting for the basis difference are understating Pennsylvania income. This is one of the most common errors in estate income tax compliance.

Planning Ahead

The Pennsylvania step-up denial for joint property is a known feature of the law — not a loophole or an oversight. For couples with significant appreciated property, pre-death planning can restructure how property is titled to either:

1. Convert joint tenancy to a form of ownership that will receive a step-up at death
2. Realize gains while both spouses are alive at lower marginal rates, resetting the basis
3. Establish trusts or other structures that allow the property to pass in a way that qualifies for the step-up

These strategies require working with a Pennsylvania estate planning attorney before death. After death, the options are largely limited to documentation and damage control.

The Pennsylvania Final Tax & Estate Tax Guide covers the dual-basis accounting obligation, capital gains reporting on the PA-41, and the 15-month safe harbor for real estate valuation — with guidance designed for executors navigating Pennsylvania's unique departure from federal step-up rules.

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