Capital Gains Tax on Inherited Property: How the Stepped-Up Basis Rule Works in 2026
When someone close to you passes away and leaves you assets, the financial questions tend to arrive before you feel ready for them. One of the most significant, and least understood, involves something called the step-up in cost basis. Understanding this rule may change how you think about whether and when to sell what you've inherited, and how much of it you ultimately keep.
The rules that govern inherited assets and capital gains taxes are not widely taught, yet they can have meaningful consequences. For families receiving an inherited home, brokerage account, or investment portfolio, understanding how the stepped-up basis works is a practical starting point for making well-informed decisions.
What Is Cost Basis and What Happens When You Inherit?
Cost basis is the original value assigned to an asset for tax purposes. For most assets, this is simply what was paid to acquire it. When the asset is later sold, the taxable gain is the difference between the sale price and that basis. If someone purchased shares of stock for $15,000 and later sold them for $60,000, the taxable gain would be $45,000, not the full $60,000 in proceeds.
When an asset is inherited rather than purchased, the original owner's cost basis does not transfer to the beneficiary. Instead, the basis is reset to the fair market value of the asset on the date of the owner's death. This reset is what the tax code calls a step-up in cost basis, or stepped-up basis, codified under IRC Section 1014. The definition is straightforward: the heir's starting point for calculating any future gain is the value of the asset at the moment they received it, not what the original owner paid.
Using the same example: if those shares were worth $60,000 at the time of death, the heir's new basis becomes $60,000. Selling the shares shortly after at that value would produce no taxable capital gain at all. The decades of appreciation that accumulated during the original owner's lifetime are effectively erased for capital gains purposes.
One detail that often surprises people: all inherited assets are automatically treated as long-term capital gains property, regardless of how long the heir has held them. Selling an inherited stock the day after receiving it still qualifies for long-term rates on any gain above the stepped-up basis, an advantage that gifted assets do not carry.
When the Value Has Fallen: The Step-Down
The step-down in basis on inherited assets works by the same mechanism, applied in reverse. When an asset is worth less at the time of death than the original purchase price, the basis steps down to the lower fair market value. Any loss that accumulated during the original owner's lifetime cannot be claimed by the heir, which means a significantly depreciated position may carry planning considerations worth discussing with a tax professional. The right approach depends on the individual's full tax situation and other factors.
Published: October 16, 2026
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Inherited Stock and Brokerage Accounts
For most heirs, inherited stock does not generate an immediate capital gains tax liability. Because the cost basis resets to fair market value at the date of death, taxable gain only arises if the heir later sells the position for more than it was worth at that moment. If the deceased held individual stocks, mutual funds, or ETFs for many years, the original purchase prices may be far below current market values. Without the step-up rule, an heir would inherit not just the assets but the embedded tax liability from decades of appreciation. With it, that gain is reset, and the beneficiary's exposure begins only from the date of inheritance forward.
For anyone managing an inherited brokerage account, it is generally worth confirming that documentation of each position's value as of the date of death has been obtained, whether through the custodian, estate administrator, or the estate's tax professionals. That record supports the stepped-up basis calculation and simplifies tax reporting if the assets are later sold.
Capital Gains Tax on Inherited Real Estate
The step-up in basis on inherited real estate follows the same framework and often produces a more significant result. If a parent purchased an inherited home decades ago for $120,000 and that home is worth $620,000 at the time of death, the heir's new cost basis becomes $620,000. A beneficiary who sells the inherited home shortly after inheritance at or near that value may owe little or nothing in capital gains tax on the inherited property. If the heir holds the property for several years and it continues to appreciate, only the gain above $620,000 would generally be subject to tax.
For inherited real estate, fair market value as of the date of death is typically established through a qualified appraisal conducted close to that date. This documentation supports the stepped-up basis and is generally necessary for accurate tax reporting when the property is sold.
What the Step-Up in Basis Does Not Apply To
Traditional retirement accounts such as IRAs and 401(k)s do not receive a step-up, and distributions are generally taxed as ordinary income under rules that vary based on the beneficiary's relationship to the original owner. Roth IRAs also fall outside the step-up, though distributions are generally tax-free because contributions were made with after-tax dollars. Assets transferred as gifts during the original owner's lifetime carry a different rule entirely: the recipient takes on the donor's original cost basis rather than receiving a reset at the time of transfer. Each category is explained in more detail below.
These accounts do not receive a step-up in basis. In most cases, these accounts were funded with pre-tax dollars, and distributions are taxed as ordinary income to whoever receives them. Under the SECURE Act of 2019, most beneficiaries are subject to the inherited IRA 10-year rule, which requires the account to be fully depleted within ten years of the original owner's death. Depending on the circumstances, distributions may also be required in the years leading up to that deadline, not just at the end. Certain beneficiaries, including surviving spouses and others who meet specific criteria, may qualify for different distribution rules. Whether the 10-year rule applies at all, and what distribution schedule it requires, depends on the beneficiary's relationship to the original owner, when the original owner died, and other factors. This is an area where guidance from a qualified tax professional is particularly worth seeking as the specifics carry real tax consequences.
Roth accounts also do not receive a step-up, but the outcome differs. Because Roth contributions were made with after-tax dollars, distributions from an inherited Roth IRA are generally tax-free for the beneficiary. Tax treatment can vary depending on the account's history, so a tax professional can confirm what applies to a specific inherited Roth.
When an appreciated asset is given as a gift rather than passed through an estate, the recipient receives the donor's original cost basis, not a stepped-up one. The same shares of stock that would carry a reset basis at death would transfer the full embedded gain to the recipient if given as a gift while the donor is still alive. This distinction is worth understanding carefully when families consider how to transfer appreciated assets across generations.
Joint Ownership and Community Property
For assets held as joint tenants with right of survivorship, which is a common form of joint ownership between spouses outside community property states, only the deceased owner's share typically receives a step-up. The surviving spouse's share generally retains its original basis.
Community property states apply different rules that can produce a more advantageous result for capital gains purposes. In those states, both halves of community property may receive a step-up in basis when one spouse dies, which can be a meaningful advantage when the surviving spouse later sells the asset. The states that follow community property law include Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin. The double step-up applies only to assets actually titled as community property; couples in these states who hold assets as joint tenants with right of survivorship do not qualify and are treated the same as joint owners in a common law state. For assets held in a revocable living trust, the step-up generally applies at the grantor's death, because the trust is treated as the grantor's own property during their lifetime.
Is the Step-Up in Basis Rule Changing? What the Law Currently Says
As of the publishing date of this article, the core rule under IRC Section 1014 remains in place. Gains that accrued during the original owner's lifetime are not recognized at death, and the heir's basis is reset to fair market value. The step-up has been the subject of recurring legislative proposals, and families involved in longer-term estate planning may find it useful to revisit this area if significant changes are enacted. For larger estates, state estate or inheritance taxes may also carry separate thresholds and rules that affect the broader picture.
What to Do After Inheriting Property or Investments
Inheriting assets often means receiving real financial complexity alongside the assets themselves. The step-up in cost basis can reduce or eliminate capital gains taxes on an inherited home, stock portfolio, or brokerage account, but the specific outcome depends on how each asset was held, titled, and documented. Retirement accounts follow separate rules entirely, and state law can shift the picture further.
If you are working through an inheritance or helping a family member understand what they've received, Rockford Financial Planning works with individuals and families navigating exactly these kinds of transitions. We would be glad to have a conversation about how these rules connect to your broader financial picture.
Rockford Financial Planning is a fee-only, fiduciary financial advisory firm based in Wilmington, Delaware, serving clients nationwide. We work with families and small businesses to bring clarity to complicated financial decisions, from retirement and investment planning to coordinating strategies across generations. Meetings are available in person, by phone, or virtually, whatever works best for you.
