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How Does Retirement Income Planning Work?
Retirement
A neutral guide to retirement income planning: how Social Security, pensions, and IRA, Roth, and brokerage withdrawals fit together and are taxed.
Published October 13, 2026 by Joel Miller, CFP. 8 min read.
Retirement income planning turns savings, Social Security, and any pension into a spending plan a household can sustain. It decides which sources fund which years, how taxes and Medicare premiums respond to each year's income, and what happens if markets, inflation, or health costs differ from expectations. It is a set of trade-offs, not a single formula.
Author: Joel Miller, CFP. Last updated October 13, 2026. This article is educational. It is not personalized tax, legal, or investment advice, and individual circumstances vary. A tax professional can confirm how the rules apply to your return.
What retirement income planning covers
Working households are paid on a schedule. In retirement, income comes from several places at once, each with its own timing and its own tax treatment. Retirement income planning is the work of deciding how those pieces fit together year by year, so that spending, taxes, and healthcare costs are considered as one picture rather than separate decisions.
The work usually touches the same questions for most households, though the answers differ:
- Spending: how much is needed each year, and how much of it is essential versus flexible.
- Guaranteed income: how much Social Security and any pension cover before savings are used.
- Funding the gap: which accounts supply the rest, and in what order.
- Taxes and Medicare premiums: how each year's income affects the tax bill and, two years later, Medicare Part B and Part D premiums.
- Resilience: what happens if markets fall early, prices rise faster than expected, health costs increase, or retirement lasts longer than planned.
How common income sources are treated
The grid describes how the federal rules generally work. It compares sources, not strategies, and it does not rank them. State tax treatment differs, and our state pages set out the rules for each state we serve.
| Income source | How federal rules generally treat it | A planning question it raises | Tends to fit when |
|---|---|---|---|
| Social Security | Up to 85% of benefits can be included in taxable income, depending on other income | When to claim, and how other income affects how much of the benefit is taxed | A household wants a base of income that adjusts for inflation and is weighing a delayed claim against earlier income |
| Traditional IRA or 401(k) withdrawals | Generally taxed as ordinary income, with required distributions starting at 73 or 75 depending on birth year | How much to withdraw in each year, and whether to convert some to Roth before required distributions begin | Most savings are tax-deferred and income is expected to be lower in the early years of retirement |
| Roth IRA withdrawals | Qualified withdrawals are generally tax-free, and the original owner has no required distributions | Whether to keep Roth money for later years or for heirs, and how it limits future taxable income | A household wants flexibility to manage taxable income in a given year |
| Taxable brokerage account | Sales produce capital gain or loss, and long-term gains are generally taxed at lower rates than ordinary income | Which holdings to sell first, and how gains interact with other income | A household has appreciated holdings and wants to control the timing of gains |
| Pensions and annuity payments | Generally taxable, except any part that returns after-tax contributions | Whether to take a survivor benefit, and how fixed payments change the need for withdrawals | A household has a pension option to weigh against other sources of lifetime income |
| Work income in early retirement | Counts as income for tax purposes, and before full retirement age may temporarily reduce Social Security benefits | How part-time work changes claiming age and withdrawals | A household plans a phased retirement rather than a single stop date |
| Medicare premiums | Not a source of income. Part B and Part D premiums can rise when income from two years earlier passes certain thresholds | How conversions, gains, and withdrawals in one year could affect premiums in a later year | Income in a given year may land near a premium threshold |
Five questions a retirement income plan works through
The order below is one common way households organize the work. It is a framework to adapt, not the only correct order.
- What will you spend, and when? Separate essential costs from flexible ones, and note years when spending may be higher or lower, such as early travel years or later healthcare costs.
- What does guaranteed income cover? Compare Social Security and any pension against essential spending. Our guide to Social Security timing and taxes covers the claiming trade-offs.
- Which accounts fund the rest, and in what order? Taxable, tax-deferred, and Roth money are each taxed differently when spent. Our withdrawal order guide walks through how households approach it, and the asset location guide covers which investments tend to sit in which account.
- How will taxes and Medicare premiums respond? Roth conversions, capital gains, and required distributions all add to income in the year they happen. See how aggressive Roth conversions should be, Roth conversions and Medicare IRMAA brackets, and required minimum distributions at 73 or 75.
- What if things go differently? Test the plan against lower markets, higher prices, higher healthcare costs, and a longer retirement, and decide in advance what could flex.
A hypothetical illustration
Hypothetical example for illustration only. It does not describe a client, is not a projection or a recommendation, and uses no returns or dollar figures. Imagine a retired couple who plan to delay Social Security for a few years. In those early years they might fund spending from taxable and tax-deferred accounts, converting some tax-deferred money to Roth while taxable income is lower. Once Social Security and required distributions begin, they might draw from a different mix of sources. The example shows sequencing only. The right mix depends on income, state taxes, health, and goals, and results vary.
The illustration shows why the order of withdrawals can matter. It does not show that any particular order is better for any particular household.
What can pull a plan off course
Every plan rests on assumptions, and some of them may not hold. A plan could be affected by:
- Market declines early in retirement, which may reduce the savings available later, because withdrawals are made while values are lower.
- Inflation, which may raise the cost of essentials faster than income grows.
- Healthcare and long-term care costs, which can be large and hard to time.
- Longevity, since a longer retirement may need income to last more years than planned.
- Tax law changes, which could alter brackets, thresholds, and deductions that a plan relies on.
Investing involves risk, including the potential loss of principal. A plan can describe a range of outcomes, but it cannot guarantee one.
Where this fits in the wider picture
Retirement income is one piece of the same planning system as investments, taxes, and estate decisions. These pages cover the neighboring topics:
- Retirement tax planning explains how conversions, Medicare premiums, required distributions, and Social Security are coordinated.
- Financial planning for pre-retirees describes the planning years before and just after retirement.
- Financial planning for high-income families covers households whose income and equity pay shape the years before retirement.
- Virtual financial advisor explains how planning works remotely and what to verify before hiring any advisor.
How Flames FP approaches this
Flames FP is a Minnesota-based planning firm that serves clients nationwide, virtually, where permitted. Memberships are flat quarterly fees with a 0% AUM fee: Flames Planning is $900 per quarter and Flames Premier is $1,650 per quarter, billed quarterly in advance with no annual commitment. Both include a dedicated advisor and comprehensive planning. Premier adds retirement-income, Social Security, and withdrawal implementation. The services page describes the full scope.
If you would like to talk through how your income sources fit together, you can schedule a Discovery Meeting. The meeting is a conversation about your situation, not tax or legal advice.
Sources
- IRS Publication 915, Social Security and Equivalent Railroad Retirement Benefits: how benefits are included in taxable income.
- IRS Publication 590-B, Distributions from Individual Retirement Arrangements: traditional and Roth IRA withdrawals, qualified distributions, and required distributions.
- IRS Publication 575, Pension and Annuity Income: how pension and annuity payments are taxed.
- IRS Tax Topic 409, Capital gains and losses: how gains on investment sales are taxed.
- CMS, 2026 Medicare Parts B premiums and deductibles: Part B premiums and the income-related adjustments.
IRS and CMS guidance was reviewed as of October 13, 2026. Rules and thresholds change, so confirm against current publications.
Frequently asked questions
What is retirement income planning?
It is the process of deciding how savings, Social Security, and any pension will fund spending over a retirement, including which accounts to draw from, how taxes and Medicare premiums respond to each year's income, and how the plan holds up if conditions change. It describes trade-offs and does not promise an outcome.
How is retirement income taxed?
It depends on the source. Traditional IRA and 401(k) withdrawals are generally taxed as ordinary income, qualified Roth IRA withdrawals are generally tax-free, long-term gains in a taxable account are generally taxed at lower rates than ordinary income, and up to 85% of Social Security benefits can be included in taxable income. State rules differ.
Does the order of withdrawals matter?
It can. Because each type of account is taxed differently, the order may change a household's tax bill, its Medicare premiums, and how long savings last. No single order fits every household, and the right choice for one household may not suit another.
When do required minimum distributions start?
Required distributions from traditional IRAs and most workplace plans generally start at age 73 for people born from 1951 through 1959, and at 75 for people born in 1960 or later. Our required minimum distribution guide covers the details.
Can retirement income planning be done virtually?
Yes. The work is analysis, documents, and conversation, which can happen by video and secure document sharing. Flames FP serves clients nationwide, virtually, where permitted. Check any advisor's registration on the SEC's adviser database before you hire.
Flames FP approach
How Flames FP Handles This
Flames Financial Planning coordinates investments, taxes, retirement income and estate guidance under a flat quarterly membership, with no fee on assets. Planning includes proactive tax guidance and a planning-focused review of a completed personal return. Premier adds ongoing tax projections, Roth-conversion and capital-gain modeling, retirement-income and withdrawal implementation, and eligible tax-return preparation and filing through an independent tax partner.
Flames Premier
$1,650 per quarter
$6,600 annualized
Memberships are billed quarterly in advance with no annual commitment. See what each includes on the pricing page, read how the pieces fit together on the retirement tax planning overview, or, if you are weighing a subscription firm, see the side-by-side with Facet.