RetirementNeuron guide

Retirement tax planning

Money from traditional retirement accounts is generally taxed when it is withdrawn or converted. Qualified Roth withdrawals are generally not taxed again. The mix of those withdrawals changes taxable income each year.

Reviewed 2026-09-28. Written by RetirementNeuron. This page was not reviewed by a CFP, CPA, attorney, or Medicare specialist. How the calculations work.

Which retirement income is taxable?

Withdrawals from traditional IRAs and pretax workplace plans are generally ordinary income. A portion of Social Security may be taxable. Qualified Roth withdrawals are generally tax-free.

Capital gains in taxable brokerage accounts follow capital-gain rules, which are separate from ordinary retirement-account withdrawals.

RetirementNeuron’s tax layer estimates federal tax from the income types in the scenario and the rule year selected. It is not a tax return.

What is an RMD?

A required minimum distribution is the minimum amount the IRS says must come out of many traditional retirement accounts once the owner reaches the applicable age.

SECURE 2.0 changed that starting age for many birth years. The applicable age depends on the rule set for that person, not a single number for every household.

RetirementNeuron applies the rule year in the plan. The educational RMD calculator is a separate illustration using published divisors.

Why does withdrawal order matter?

The account you draw from changes taxable income, future required distributions, and sometimes Medicare premiums.

There is no universal best order. A household that needs to manage a tax bracket may draw differently from a household that needs cash and has little pretax savings.

Scenario comparisons keep the tax estimate next to the income estimate so the two are not described as the same number.

Questions

Does RetirementNeuron prepare a tax return?

No. It estimates planning taxes from household inputs and published rule years. Filing, credits, and state-specific items can differ. A CPA or enrolled agent can review the return.

Sources

RetirementNeuron is educational planning software. It does not provide individualized investment, tax, legal, Medicare, or Social Security advice.