How much tax does the example save by spreading the IRA?

Under the deliberately fixed assumptions, the immediate $300,000 withdrawal adds $90,757.25 of federal income tax, while ten annual $30,000 withdrawals add $68,860 in total. The modeled difference is $21,897.25. Real results can differ because brackets, income, investment returns, deductions, state tax, and other income-sensitive rules change over time.

Why is the full $300,000 not taxed at 35%?

Federal income tax uses marginal brackets. Jamie’s added IRA income fills successive portions of the 22%, 24%, 32%, and 35% brackets after the baseline income. Only the dollars falling within a bracket are taxed at that bracket’s rate. The highest marginal rate reached is not the effective rate on the entire distribution.

What if my income will fall after retirement?

That can make later inherited IRA withdrawals fall into lower marginal brackets, but it must be balanced against the fixed federal inherited-IRA deadline and possible investment growth. A year-by-year projection should use your expected wage, pension, Social Security, capital gain, and state residency rather than assuming the same $90,000 baseline used in this teaching example.

Does spreading withdrawals always reduce total tax?

No. Future tax rates can rise, the account can grow, your own income can increase, or a late distribution can interact with other taxes and benefits. Some beneficiaries may prefer earlier withdrawals in temporarily low-income years. The value of the example is showing why timing matters, not declaring one withdrawal pattern optimal for everyone.

Cash Out an Inherited IRA Immediately vs. Spread Over 10 Years: A 2026 Tax Comparison

Q: Can I simply take one-tenth of the IRA every year?

You can choose a pacing strategy if it satisfies all mandatory rules, but one-tenth is not an IRS formula. Annual RMDs can be required when the original owner died on or after the required beginning date, and investment returns change the balance. The legal requirement is to satisfy annual RMDs when applicable and empty the account by the terminal deadline.

Cashing out a large traditional inherited IRA in one year can push part of the distribution into higher federal marginal brackets. Spreading discretionary withdrawals over a 10-year window can reduce that bracket compression, although annual RMDs, investment returns, future tax-law changes, state tax, and the beneficiary’s changing income can alter the result.

The example below uses the actual 2026 federal tax brackets for a single filer and deliberately holds everything else constant. It is a teaching model, not a prediction. It isolates the bracket effect so you can see why “$300,000 is $300,000 either way” is not true when progressive tax rates apply.

The assumptions

Assume Jamie is single and has $90,000 of taxable income before inherited IRA withdrawals in every year of the comparison. Jamie inherits a $300,000 fully pretax traditional IRA and, for this simplified model, the account earns 0%, there are no deductions or credits changing taxable income, state tax is ignored, and 2026 federal brackets remain frozen for all ten years.

Those assumptions are intentionally unrealistic in the long run. They make the arithmetic transparent. In real planning, investment returns, inflation-adjusted brackets, wages, retirement, Medicare, capital gains, deductions, and federal law can change every year.

2026 single-filer brackets used in the example

IRS Revenue Procedure 2025-32 sets 2026 single-filer ordinary-income brackets at 10% through $12,400; 12% from $12,400 to $50,400; 22% from $50,400 to $105,700; 24% from $105,700 to $201,775; 32% from $201,775 to $256,225; 35% from $256,225 to $640,600; and 37% above that. Only income within each band is taxed at that band’s rate.

Jamie’s baseline $90,000 taxable income already fills the 10% and 12% brackets and part of the 22% bracket. Any inherited IRA distribution stacks on top of that baseline.

Scenario A: withdraw the full $300,000 in year 1

Jamie’s taxable income becomes $390,000. Using the 2026 single-filer schedule, federal income tax on $90,000 is $14,512. Tax on $390,000 is $105,269.25. The incremental federal income tax associated with adding the $300,000 distribution in this simplified model is therefore $90,757.25.

The distribution crosses the 22%, 24%, 32%, and 35% brackets. The IRA is finished immediately, so there is no later inherited-IRA RMD risk, but the price is concentrated ordinary income in one year.

Scenario B: withdraw $30,000 per year for ten years

Each modeled year Jamie’s taxable income becomes $120,000. Under the same 2026 schedule, federal tax on $120,000 is $21,398. Subtract the $14,512 baseline tax and the incremental tax from the $30,000 IRA withdrawal is $6,886 for that year.

If the same tax schedule and $90,000 baseline are assumed for ten years, the ten incremental amounts total $68,860. Compared with the one-year cash-out model, the difference is $21,897.25. Again, this is not a forecast; it is the progressive-bracket effect under fixed assumptions.

Why the math changes in real life

Actual inherited IRAs can grow or fall in value, so ten $30,000 withdrawals may not empty an account that starts at $300,000. Federal brackets are indexed and tax law can change. Jamie’s salary may rise, fall, or disappear at retirement. A large IRA distribution can also interact with capital-gain rates, deductions, credits, Medicare income-related premiums, Social Security taxation, and state income tax.

The old article inherited IRA withdrawals and tax brackets provides the framework. This article intentionally goes one step further by calculating one concrete 2026 example.

Annual RMDs may prevent a perfectly even schedule

If the original owner died on or after the required beginning date and Jamie is a designated beneficiary under the 10-year rule, current final regulations can require annual RMDs in years 1–9. Those amounts are minimums, not a command to withdraw exactly one-tenth per year. A $30,000 planned withdrawal can satisfy an RMD if it is at least the required amount, but a larger RMD would force the schedule upward.

If the owner died before the RBD and the pure 10-year rule applies, Jamie can have more discretion over years 1–9, but the entire account still must be empty by the year-10 deadline.

Waiting can also create a year-10 cliff

Consider the opposite strategy: Jamie takes little beyond required annual amounts for nine years and leaves $250,000 for year 10. That last distribution can recreate the same bracket-bunching problem as an immediate cash-out, only later. Investment growth can make the terminal amount even larger.

A multi-year plan should therefore track projected year-10 balance, not just current-year tax. “Delay tax” is useful only if the remaining distribution can still be absorbed within the deadline.

State tax can reverse part of the comparison

If Jamie expects a genuine move from California to Nevada in year 5, delaying some distributions until after the change of domicile can reduce state tax on future retirement income while federal tax remains. If Jamie lives in Pennsylvania, beneficiary death-payment rules can create another state result. The federal bracket example alone cannot answer those state questions.

Use moving states during the 10-year window and the state tax starting point alongside the federal model.

A simple annual decision framework

Calculate any mandatory inherited-IRA RMD first; that amount is not optional.
Estimate taxable income before discretionary IRA withdrawals for the current year.
Identify the next federal marginal-bracket threshold using current IRS figures.
Estimate state income tax and any planned residency change.
Project the inherited IRA balance and remaining years through the terminal deadline.
Check income-sensitive items such as Medicare, Social Security, credits, or capital gains if relevant.
Choose a discretionary amount only after the required distribution and year-10 projection are both visible.

What this example proves—and what it does not

The example proves that a progressive rate schedule can make the timing of identical total ordinary income matter. Under the fixed 2026 assumptions, ten $30,000 increments cost less federal tax than one $300,000 increment because less income reaches the 32% and 35% brackets.

It does not prove that ten equal withdrawals are optimal, that tax rates will remain unchanged, or that a beneficiary should keep investments in an inherited IRA for ten years. It is a comparison tool for understanding bracket mechanics, not personalized advice.

The useful comparison is marginal tax by year, not simply “ten equal withdrawals are better”

Spreading withdrawals can reduce federal tax when a lump sum pushes income through higher brackets, but the benefit depends on the beneficiary’s other income each year. A beneficiary expecting a business sale, large bonus, retirement, or marriage within the 10-year window may have unusually high- and low-income years. The tax-bracket framework is therefore best used to assign withdrawals to years, not to mandate an equal one-tenth schedule.

Annual RMDs can constrain the plan when the original owner died on or after the required beginning date and the beneficiary is subject to the 10-year rule with annual distributions. The beneficiary may need to take at least the annual required amount even in a year they would otherwise prefer to skip. The remaining balance still must be emptied by the end of year 10.

Investment returns also change the arithmetic. If the account grows while distributions are deferred, a year-10 balance can be much larger than the original amount. If markets decline, the opposite can happen. A robust comparison should model at least a flat-return case and one growth assumption, while making clear that return assumptions are not guaranteed.

Finally, federal income tax is not the only variable. State residency, Medicare IRMAA, taxation of Social Security, credits and deductions, and net investment income elsewhere can react to adjusted gross income. The numerical example in this guide intentionally isolates federal brackets so the mechanism is visible; a real tax projection should layer those interactions on top rather than presenting the example’s $21,897 difference as a promised savings.

Recalculate annually instead of locking in the example

The 2026 bracket example is a teaching model, not a ten-year prescription. Each fall, update projected wages, bonuses, business income, deductions, state residency, RMD minimums, and the inherited IRA balance. Then compare an additional withdrawal with leaving that amount for later years.

A plan that was efficient in 2026 can become inefficient after a promotion, retirement, tax-law change, or market move. The discipline is repeated marginal-tax comparison, not adherence to equal installments.

Practical note: Preserve the assumptions behind each annual projection. If Congress changes rates or deductions, use the new law for future withdrawals rather than comparing every later year with the original 2026 example.

This is general information, not personalized tax or legal advice — a CPA or estate attorney can confirm how this applies to your specific inherited account.