Step-Up in Basis: A Tax Break for Heirs
I often discuss step up in basis because it simplifies how inherited assets are taxed. It adjusts the tax cost of an asset to its fair market value upon inheritance. That means when I inherit property I only pay capital gains tax on the increase in value after I receive it.

I know taxes can feel confusing but understanding step up in basis helps me navigate estate planning more confidently. It’s a powerful tool that can reduce taxes for my heirs and preserve more of my legacy.
What Exactly Is a Step-Up in Basis?
I see a step-up in basis as a tax rule that sets the cost basis of inherited assets to their fair market value at the previous owner’s death. This approach affects the capital gains I’m responsible for if I sell those assets later.
Effects on the Beneficiary
I benefit from a reduced taxable gain when the fair market value at inheritance exceeds the original purchase price. If the asset’s value has dropped, a step-down occurs instead of a step-up. This mechanism applies to stocks, real estate, and other types of property, potentially making estate settlements less burdensome.
Important Points to Remember
- Basis reset: The adjusted cost basis resets to the fair market value at the previous owner’s death.
- Capital gains impact: The resulting gain or loss depends on the difference between the new cost basis and the sales price.
- Flexibility: These rules influence how I plan to manage or sell inherited assets.
- Possible step-down: If the market value is lower than the original price, the cost basis decreases.
How the Step-Up in Basis Functions
This mechanism resets the tax basis of inherited assets to their market value on the date of the previous owner’s death. Beneficiaries pay capital gains on the appreciation that occurs after inheritance.
Illustrative Example
I received 100 shares of a company’s stock from my relative. The original owner’s basis was $10 per share, but the price was $20 at inheritance. I’d only see taxable gains on the difference beyond $20 if I sold at a higher price.
| Stage | Stock Price | Basis for Gains |
|---|---|---|
| Original Ownership | $10 | Not applicable |
| Inheritance | $20 | Reset to $20 |
| Future Sale | $25 | Gain taxed on $5 |
Understanding Step-Up in Basis in Community Property States
I see unique tax advantages in community property states for married couples. Double step-up in basis applies to assets held as community property at the first spouse’s death, so the surviving spouse receives a new cost basis on the entire property.
Residents in nine states, including one on the West Coast, benefit from this rule if the property is classified as community property. Some other states offer community property trust options to both residents and nonresidents, allowing a similar tax outcome. In common law states, only the deceased spouse’s portion of a jointly owned asset receives a step-up in basis.
Illustrative Example
I notice how different states apply these rules when I look at a hypothetical pair, Ann and Bill, who hold stock worth $200,000 in a joint brokerage account with a $100,000 cost basis. They live in a common law state. At the time of Bill’s death, only his portion of the assets recognizes a step-up in basis. If Ann and Bill had lived in a community property state or held a qualifying community property trust, the entire asset might have been eligible for a double step-up in basis instead of just half.
Step-Up in Basis Considered a Tax Loophole
I notice that many refer to step-up in basis as a legal measure that minimizes capital gains for heirs. Critics call it a tax loophole because estates bypass taxes on substantial unrealized gains.
Pros and Cons
Pros
- Minimizes taxable gains on appreciated property, saving thousands or hundreds of thousands of dollars.
- Encourages intergenerational wealth transfer.
- Addresses double taxation concerns from those who argue that elimination might impose multiple tax layers.
- Benefits high-value estates disproportionately.
- Reduces potential tax revenue and shifts financial burdens elsewhere.
- Draws scrutiny from policymakers focused on broadening the tax base.
How to Calculate Step-Up in Basis?
I start by locating the fair market value on the decedent’s date of death. That figure acts as the new basis if it’s higher than the original purchase price. This means any previous unrealized gains are removed from future capital gains calculations. I gather records of acquisition costs, improvements, and market valuations to confirm the original basis and compare it with the stepped-up basis. I then estimate any projected capital gains by subtracting the stepped-up basis from a future sale price.
- Locate the date-of-death market value through appraisals or market data
- Confirm the original cost basis using purchase records and documented improvements
- Assess whether the new basis aligns with the fair market value at inheritance
- Calculate potential capital gains by subtracting that stepped-up basis from the sale price
Below is a simple example with hypothetical figures:
| Asset Description | Original Purchase Price | Date-of-Death Fair Market Value | Stepped-Up Basis | Future Sale Price | Capital Gain |
|---|---|---|---|---|---|
| Property | 200,000 | 300,000 | 300,000 | 320,000 | 20,000 |
I verify that the stepped-up basis replaces the previous purchase value if the market value has risen. This approach clarifies taxable positions when I’m evaluating the best time to sell or hold inherited assets.
Differing Treatments of Step-Up in Basis in Community Property States
Differing treatments of step-up in basis in community property states hinge on how each jurisdiction classifies marital assets. An entire cost basis adjustment applies when assets qualify as community property. Common law states only adjust the deceased spouse’s portion of jointly held assets, which can leave the survivor with the original basis on the remaining share.
I see nine jurisdictions—Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin—that recognize community property. Some states, including Alaska, Kentucky, South Dakota, and Tennessee, let married couples or individuals establish community property trusts that can enable a double step-up in basis. This approach can reduce future capital gains if the asset is sold post-inheritance.
| Ownership System | Examples of States | Step-Up in Basis |
|---|---|---|
| Community Property | Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, Wisconsin | 100% step-up at first spouse’s death |
| Common Law | Most other states | Only deceased spouse’s share |
| Community Trust Option | Alaska, Kentucky, South Dakota, Tennessee | Double step-up under federal rules |
I note that categorizing marital property as community property impacts a step-up in basis for estate tax purposes. Assets recorded as community property receive a unified basis reset, which can lower capital gains taxes for the surviving spouse.
Is Step-Up in Basis a Tax Advantage?
I see a clear tax benefit when an inherited asset’s basis increases to its fair market value. This increase often lowers the taxable gain if the asset is sold, since prior appreciation is excluded. I notice that large estates gain the most, especially when the property has significantly appreciated over time.
I reference 26 US Code 1014, which codifies this mechanism. It further grants a long-term capital gains holding period, regardless of how long the decedent owned the asset. I acknowledge that this reduces the immediate tax burden for heirs and may protect a substantial portion of their inheritance.
I find that a stepped-up basis makes estate strategies more flexible. If an asset’s value jumped from 500,000 dollars to 800,000 at the decedent’s death, the new basis is 800,000. I see that heirs are taxed only on the appreciation above that amount if they later sell, which effectively diminishes potential capital gains taxes.
Conclusion: Key Takeaways and Next Steps
I believe that being aware of step up in basis is vital for anyone wanting to optimize their estate plans. It’s given me a sense of control over how my assets will pass on
I encourage you to consult with a trusted advisor so you can leverage this method effectively. Stay alert to any changes in regulations and keep your documents updated. That way you’ll feel more secure and better prepared for the future
Frequently Asked Questions
How does the step-up basis work?
The step-up in basis adjusts an inherited asset’s cost basis to its fair market value on the decedent’s date of death. This means that any taxes due on future gains apply only to the value increase above the new basis. By resetting the asset’s basis, heirs can reduce or even eliminate capital gains that built up during the original owner’s lifetime.
Does all inherited property get a step-up in basis?
Most inherited assets get stepped up, especially long-term holdings like stocks and real estate that have grown in value over time. If, however, the asset’s market value is lower than its original basis, a step-down might occur instead. Generally, this rule applies to property passed on at death, giving heirs a fresh start for tax purposes.
What are the IRS rules on stepped-up basis?
Under IRS regulations, when you inherit an asset with unrealized gains, its basis resets to the fair market value at the owner’s death. The newly stepped-up basis cancels out the previously unrealized gains for tax purposes, meaning you pay capital gains tax only on the growth above the new basis after inheritance.
Does a surviving spouse get a step-up in basis?
Yes, but the extent varies by state. In community property states, both halves of community property receive a step-up (often called a double step-up). In common law states, only the deceased spouse’s share is adjusted to the fair market value at death. This difference can significantly affect future capital gains taxes for the surviving spouse.
What is the 6 month rule for stepped-up basis?
An estate’s executor may choose an alternate valuation date six months after the decedent’s death if an estate tax return is filed. This can adjust the asset’s basis to its fair market value on that date, rather than the date of death. It’s useful when asset values decline in that six-month period.







