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What Is an Inherited IRA and Who Must Use This Calculator?
An inherited IRA (also called a beneficiary IRA) is a retirement account that has been passed to someone other than the original owner upon the owner's death. If you have inherited a traditional IRA, 401(k), 403(b), or SIMPLE IRA, you are required to take distributions from the account, but the schedule, amounts, and deadlines depend heavily on your relationship to the deceased and when you inherited the account. Our inherited IRA calculator helps you model those distributions so you can plan your income and tax strategy across the entire withdrawal period.
Before the SECURE Act took effect in 2020, most beneficiaries could use the “stretch IRA” strategy, taking annual required minimum distributions based on their own life expectancy and extending the account over decades. The IRS guidance on RMDs for beneficiaries now distinguishes between two categories: eligible designated beneficiaries who may still use the stretch IRA approach, and most other non-spouse beneficiaries who are subject to the new 10-year rule. Understanding which category applies to you is the essential first step before using any inherited IRA RMD calculator.
The inherited IRA rules also intersect with the broader landscape of retirement income planning. If you are simultaneously managing your own retirement accounts and an inherited account, the distribution income can significantly affect your tax bracket, Medicare premiums, and eligibility for income-sensitive deductions. Use our required minimum distribution calculator alongside this tool to coordinate withdrawals from all your accounts.
The SECURE Act 10-Year Rule Explained
The Setting Every Community Up for Retirement Enhancement (SECURE) Act, enacted in December 2019, fundamentally changed the rules for non-spouse beneficiaries who inherit IRAs after December 31, 2019. Under the SECURE Act, most non-spouse beneficiaries must withdraw the entire inherited IRA balance within 10 years of the original account owner's death. There is no mandated annual amount, the account simply must be emptied by the end of year 10.
The flexibility of the 10-year window is also its biggest planning challenge. A beneficiary who withdraws nothing for the first nine years and takes the entire balance in year 10 could face an enormous tax bill, potentially pushing them into the highest federal tax brackets. For a $300,000 inherited IRA, a single-year lump-sum distribution would add the full amount to ordinary income, potentially triggering the 32%, 35%, or even 37% marginal rate. Our SECURE Act inherited IRA calculator models a level annual distribution strategy to smooth that tax impact across all 10 years.
The IRS issued proposed regulations in 2022 suggesting that beneficiaries subject to the 10-year rule who inherited from an owner who had already begun taking RMDs would also be required to take annual distributions during the 10-year period. These regulations were finalized in 2024. Always confirm the current rules for your specific situation with a tax professional, as the regulatory landscape for the 10-year rule IRA calculator continues to evolve.
Stretch IRA Rules for Eligible Designated Beneficiaries
Eligible designated beneficiaries (EDBs) are a specific group defined by the SECURE Act who retain the right to use the stretch IRA method, taking annual distributions over their lifetime based on the IRS Single Life Expectancy Table. This group includes surviving spouses, minor children of the original account owner, individuals who are disabled or chronically ill as defined by the IRS, and any beneficiary who is not more than 10 years younger than the deceased owner (such as a sibling close in age).
The beneficiary IRA calculator for eligible designated beneficiaries works by applying the IRS Single Life Expectancy Table (Table I in IRS Publication 590-B). In the first year, you divide the December 31 account balance by the life expectancy factor for your age. In each subsequent year, the factor decreases by 1, gradually increasing the percentage of the account you must withdraw. For a 60-year-old surviving spouse, the Year 1 factor is 27.1, meaning the first-year RMD is approximately 3.7% of the balance, a far more manageable amount than taking the whole balance over 10 years.
Surviving spouses have an additional option not available to other EDBs: they can roll the inherited IRA into their own IRA and delay RMDs until they themselves reach age 73 under the SECURE 2.0 Act rules. This strategy can be particularly advantageous if the surviving spouse is younger than the deceased owner and does not yet need income from the account. Use our Roth IRA calculator to explore whether a Roth conversion of the inherited balance might make sense before rolling it into your own account.
Tax Planning Strategies for Inherited IRA Distributions
Every dollar distributed from a traditional inherited IRA is added to your ordinary taxable income in the year of the withdrawal. This means that an inherited IRA distribution could push you into a higher federal bracket, trigger income-related Medicare premium surcharges (IRMAA), reduce eligibility for the premium tax credit, or phase out other deductions. Thoughtful distribution timing is one of the most impactful tax decisions you will make during the distribution period.
The optimal strategy for most beneficiaries subject to the 10-year rule is to level out distributions across years when your income is lowest. Consider taking larger distributions in years when you are in a lower bracket, for instance, during early retirement before Social Security begins, in years with significant deductible expenses, or in low-income years between jobs. Conversely, in high-income years, you may want to take only the minimum amount needed to avoid a year-10 spike.
For inherited Roth IRAs, there is no income tax on qualified distributions, but the 10-year rule still applies; the account must still be emptied within 10 years (or under the stretch IRA method for EDBs). Since there is no tax cost to delaying Roth distributions, you might prefer to let the Roth account grow tax-free as long as possible and withdraw in year 10. Use our 401k calculator to understand how your own pre-tax retirement balances interact with the inherited IRA income you will be receiving during the same years.
Using the Inherited IRA Calculator to Build Your Distribution Plan
The inherited IRA distribution calculator on this page gives you two tools in one. The 10-Year Rule tab models the most common scenario, a non-spouse beneficiary with a post-2019 inheritance; and shows you a suggested equal annual withdrawal schedule along with projected ending balances, taxes owed at your stated rate, and total after-tax proceeds. The Stretch IRA tab models the RMD schedule for eligible designated beneficiaries using the IRS Single Life Expectancy Table.
To get the most out of the calculator, enter the actual inherited balance, your current age, the year you inherited the account, your expected annual return on the invested funds, and your marginal income tax rate. The expected return input matters because the account continues to grow between distributions, a higher return rate means a larger total distribution pool but also higher annual suggested amounts to deplete the account evenly. The tax rate field gives you an estimate of after-tax proceeds, though your actual liability will depend on your total income each year.
Building a complete picture of your inherited IRA obligations alongside your own retirement income is essential for avoiding tax surprises. Explore the full suite of retirement and financial planning tools on Quant Calculators to model Social Security timing, traditional IRA RMDs, Roth conversions, and retirement spending, all of which interact with the inherited IRA distributions you will be receiving. According to Investopedia’s overview of the 10-year rule, proactive annual planning is the single best defense against an avoidable tax spike in the final year of the distribution window. Use the retirement calculator to stress-test your overall retirement income plan with and without the inherited IRA distributions factored in.