toolbox
Home / Money & Investing / Required Minimum Distribution Income Forecast Estimator

Required Minimum Distribution Income Forecast Estimator

This estimator projects annual retirement cash income by combining required minimum distributions with another recurring income amount.

It is designed for people who want to see how an RMD stream may affect gross income over several years rather than looking at one distribution in isolation. The retirement balance is rolled forward after each modeled RMD using the return assumption, while the other income input is added each year. The result can support budgeting and scenario comparisons, but it does not determine taxable income or account for deductions, Social Security taxation, or state tax rules.

Income forecast assumptions

$
years
years
%
$
Result
—
Total projected cash income
Total RMD income—
Other income total—
Average annual income—
Projected ending balance—

1. Enter the account balance
Use the retirement account balance that will be the base for the first modeled RMD.

2. Set age and horizon
Choose the first projected age and number of years. The model must stay within the Uniform Lifetime Table age range.

3. Add expected account growth
Use a planning return for the balance left after each required distribution.

4. Enter recurring income
Add an annual amount for pension or other retirement cash income you want combined with RMDs.

5. Compare the totals
Review cumulative RMD income, other income, average annual cash flow, and the projected ending account balance.

Annual gross cash income = RMD + Other annual retirement income

RMD = prior year-end account balance ÷ applicable Uniform Lifetime denominator. The projected next-year account balance equals (opening balance − RMD) × (1 + growth rate). Other income is held constant in this simplified forecast.

What the result means

The main result is gross projected cash received from modeled RMDs plus the other annual income entered for the full forecast period.

This is not taxable-income or after-tax-income output; retirement distributions may have different federal and state tax treatment.

Given: $850,000 balance at age 73, 2 years, 4% growth, and $36,000 of other annual income.

Calculation: First RMD = $850,000 ÷ 26.5 = $32,075.47. First-year cash income = $32,075.47 + $36,000 = $68,075.47. The remaining balance grows by 4%, then the age-74 denominator is used for year two.

Result: Two years of RMDs are added to $72,000 of other income.

Interpretation: The total shows gross cash flow available before taxes and spending.

What does “other retirement income” include?

Use it for recurring annual income you want to view alongside RMDs, such as a pension or other taxable retirement cash flow. Keep Social Security separate if you need a detailed taxable-benefit calculation.

Is the RMD itself investment income?

No. An RMD is a required distribution from a retirement account. The calculator treats it as cash received during the year so you can estimate total retirement cash inflow.

Why can projected income change even with flat other income?

RMD amounts change with both the projected account balance and the IRS age-based denominator. As the denominator falls with age, required distributions can rise even if the account balance does not grow.

Does this forecast calculate federal income tax?

No. It reports gross projected cash income. Use a tax-impact calculator when you need an estimate after applying a tax rate or other tax assumptions.

Can the return assumption be negative?

Yes, within the allowed input range. A negative return reduces future projected balances and can lower later RMD dollar amounts, although the age-based denominator also changes each year.