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Insight · Retirement Income

Retirement Income Planner: Calculate Your Total Income

Most people planning for retirement focus on one number: their 401(k) balance. But your real retirement income picture is made up of many streams working together, and when you add them all up, the total is often far more encouraging than any single account suggests.This guide walks you through a simple worksheet approach to calculating your complete retirement income from every source, so you can see the full picture clearly.
April 27, 202612 min readUpdated April 27, 2026
Retirement Income Planner: Calculate Your Total Income
Retirement IncomeRetirement Income Planner+5

What If Your Retirement Income Is Already Better Than You Think?

Here is a scene that plays out in kitchen tables across America every week. Someone opens their 401(k) statement, sees a number that feels smaller than they hoped, and quietly worries that retirement might be harder than expected. What they are not looking at is the other column on the spreadsheet they have not yet built: the one that adds Social Security, a pension, a rental property, and maybe a little part-time income on top.

When you add everything together, the total is often genuinely surprising. The goal of a retirement income planner is not to generate false comfort. It is to give you an accurate, complete view of what is actually coming in each month, so your planning is grounded in reality rather than fear. This guide gives you a practical, step-by-step worksheet approach to calculate your total retirement income from every source. We will also walk through a sample couple's complete income picture to show you how the pieces fit together.

Please note: This article is general educational information only. It is not personalised financial advice. Before making any retirement income decisions, consider speaking with a qualified financial adviser.

Step 1: Map Every Possible Income Source Before You Calculate Anything

The first job of any retirement income worksheet is to make sure you are not leaving anything out. Many people forget entire income streams when they are stressed about a single account balance. Before running any numbers, list every category that might apply to your household.

Here are the six main income sources most retirees draw from:

  • Social Security benefits - For you, and potentially for a spouse or ex-spouse
  • Pension income - Defined benefit plans from current or former employers, or government pensions
  • 401(k) and IRA withdrawals - From traditional pre-tax accounts (which are taxable) and Roth accounts (which may be tax-free)
  • Taxable investment income - Dividends, interest, and capital gains from brokerage accounts
  • Rental property income - Net rental income after expenses, mortgage, and taxes
  • Part-time or freelance work - Many retirees work part-time by choice, and even modest earnings can meaningfully reduce early withdrawals from savings

Not every category will apply to your household, and that is completely normal. The point is to look at the full menu before deciding what is on your plate. If you want to understand how some of these sources interact with each other over a long retirement, our guide on whether your savings will last 30 years explores the longevity side of this equation.

Step 2: Estimate Your Social Security Income (Both Spouses)

For married couples, Social Security is often the single largest guaranteed income source in retirement, and it is also one of the most misunderstood. Many households leave money on the table by not thinking through both spouses' benefits together.

Here is what to pin down for this part of your worksheet:

  • Your own benefit at different ages - The Social Security Administration (SSA) allows you to claim as early as age 62, at your full retirement age (currently 66 or 67 depending on your birth year), or as late as age 70. Waiting beyond full retirement age earns you an 8% annual increase in your benefit for each year you delay, up to age 70, according to the SSA.
  • Your spouse's benefit - Your spouse may be entitled to their own earned benefit, or a spousal benefit worth up to 50% of your full retirement age benefit, whichever is higher.
  • Survivor benefits - When one spouse passes, the surviving spouse keeps the higher of the two benefit amounts. This makes the higher earner's claiming decision especially important.

The SSA's my Social Security portal at ssa.gov lets you view your personalised earnings record and benefit estimates at different claiming ages. This is the most accurate starting point for your worksheet. For a deeper look at how claiming age affects your monthly check, our Social Security calculator guide breaks down the numbers at 62, 67, and 70.

For your worksheet, record your estimated monthly benefit and your spouse's estimated monthly benefit at the age you each expect to claim. Add them together for your household Social Security total.

Step 3: Add Pension Income and Calculate Its Real Value

If either spouse has a pension from an employer or government job, this is one of the most valuable assets in your retirement picture, because it pays a guaranteed monthly amount for life. Pension income belongs on your worksheet as a fixed monthly figure.

A few things worth clarifying at this stage:

  • Survivor options - Most pensions offer a joint-and-survivor annuity option that reduces your monthly payment slightly but continues paying your spouse after your death. This is an important factor for couples to weigh with a financial adviser.
  • Cost-of-living adjustments (COLAs) - Some pensions include inflation adjustments; many do not. A pension without a COLA will lose purchasing power over time, which is worth factoring into your longer-term planning.
  • Lump sum vs. monthly payment - Some plans offer a lump-sum option at retirement. Our guide on lump sum vs. monthly pension walks through the key considerations for that decision.

Record your expected monthly pension amount on your worksheet. If you have pensions from multiple employers, list each one separately and then add them together.

Step 4: Estimate Sustainable Withdrawals from 401(k) and IRA Accounts

Your retirement savings accounts are probably what you think of first when someone says "retirement planning," but in the context of your total income worksheet, they are just one line item among several. The question here is not your account balance. It is how much monthly or annual income that balance can realistically support.

A widely discussed starting point for estimating sustainable withdrawals is the 4% guideline, which suggests that withdrawing approximately 4% of your portfolio in year one, and adjusting for inflation annually, has historically supported a 30-year retirement in many market scenarios. This is a general educational reference point, not a guarantee, and individual circumstances vary significantly. A financial adviser can help model withdrawal rates specific to your timeline, risk tolerance, and income needs.

For a rough worksheet estimate, you might consider what 4% of your total 401(k) and IRA balances looks like annually, then divide by 12 for a monthly figure. For example, a household with $600,000 in combined retirement accounts might estimate around $24,000 per year, or $2,000 per month, as a starting reference point.

One important distinction: withdrawals from traditional 401(k) and IRA accounts are taxable as ordinary income. Withdrawals from Roth accounts are generally tax-free in retirement (subject to IRS rules). Both belong on your worksheet, but they carry different tax implications. Also worth noting: once you reach age 73, the IRS requires minimum distributions (RMDs) from traditional accounts regardless of whether you need the income. Our RMD calculator guide explains how to estimate those amounts.

Step 5: Add Investment, Rental, and Part-Time Income

These additional income streams are where your retirement picture often gets more interesting than people expect. Even modest amounts from these sources can meaningfully reduce pressure on your savings.

Taxable investment income - If you have a regular brokerage account outside your retirement accounts, it may generate dividends and interest income. Long-term capital gains from investments held more than a year are taxed at preferential rates (0%, 15%, or 20% depending on your taxable income, according to IRS guidance), which can make this a relatively tax-efficient income source in retirement.

Rental property income - If you own rental real estate, calculate your net income after mortgage payments, property taxes, insurance, maintenance, and management fees. Some retirees find rental income provides a meaningful monthly supplement, though it also comes with responsibilities and variability that pure investment income does not.

Part-time or freelance work - Many people in their 60s continue working in some capacity, whether by choice or design. Even $1,000 to $2,000 per month in earned income during the early years of retirement can allow your investment accounts more time to grow, and can delay the need to draw down savings. One important note: if you claim Social Security before your full retirement age and continue working, the SSA's earnings test may temporarily reduce your benefits. The SSA explains this in detail at ssa.gov.

Add each of these figures to your worksheet as estimated monthly income amounts.

The Complete Picture: A Sample Couple's Retirement Income Worksheet

To show how the pieces come together, consider this hypothetical example. Please note this scenario is illustrative only and does not represent any real household or guaranteed outcome.

Meet David and Linda, a hypothetical couple both aged 63, planning to retire at 67.

  • David's Social Security at 67 (full retirement age): $2,200/month
  • Linda's Social Security at 67: $1,400/month
  • David's pension from 28 years of teaching: $1,800/month
  • Combined 401(k) and IRA withdrawals (approx. 4% of $520,000): $1,733/month
  • Dividends from taxable brokerage account: $400/month
  • Linda's part-time consulting (first 3-4 years of retirement): $1,000/month

Total estimated monthly household income: $8,533

Now compare that to how David and Linda felt when they looked at their 401(k) balance alone and worried it was not enough. Their savings account is actually the smallest of their five income sources. Individually, each stream looks modest. Together, they paint a genuinely encouraging picture, one that covers average retirement expenses for many American households.

Of course, this is a simplified illustration. Taxes, healthcare costs, inflation, and sequence-of-returns risk all affect the real picture. But the exercise of building this worksheet is often the moment people realise they are in better shape than they feared.

What to Do With Your Total: Gaps, Taxes, and Next Steps

Once you have your estimated total monthly retirement income, compare it to your estimated monthly expenses. Our guide on what you will actually spend in retirement can help you build a realistic expense picture to put alongside your income worksheet.

If your income comfortably covers your projected expenses, that is genuinely good news worth acknowledging. If there is a gap, identifying it now, five to ten years before retirement, gives you real options to address it: additional savings, adjusting your retirement date, optimising Social Security claiming ages, or exploring part-time income.

A few things to keep in mind as you interpret your total:

  • Taxes matter. Not all of your income will reach you in full. Traditional 401(k) and IRA withdrawals are taxable. Up to 85% of Social Security benefits may be taxable depending on your combined income, according to IRS guidelines. A financial adviser or tax professional can help you model your after-tax income picture.
  • Healthcare is a major variable. Before Medicare kicks in at 65, healthcare costs can be substantial. Even after 65, Medicare premiums, supplemental coverage, and out-of-pocket costs are real line items to include in your budget.
  • Inflation erodes fixed income over time. Sources without cost-of-living adjustments, like many private pensions, will cover less of your expenses each year. This is worth factoring into longer-term projections.

The worksheet approach is a starting point for clarity, not a finished financial plan. A qualified financial adviser can help you stress-test your numbers, model different scenarios, and turn this income picture into a coordinated withdrawal and tax strategy.

Disclaimer: This article is for general educational purposes only and does not constitute personalised financial, tax, or investment advice. Retirement income planning involves complex individual factors. Always consult a qualified financial adviser and tax professional before making retirement income decisions.

Frequently Asked Questions

How do I find out exactly how much Social Security income I will receive?
The most accurate way is to create or log in to your account at ssa.gov through the my Social Security portal. There you can view your complete earnings history and see personalised benefit estimates at different claiming ages (62, full retirement age, and 70). The estimates update regularly as your earnings record is updated, making it the most reliable source for your retirement income worksheet.
Can I count on all of these income sources being there when I retire?
Each source carries a different level of certainty. Social Security and pensions backed by the Pension Benefit Guaranty Corporation (PBGC) are generally considered more stable, though not without their own considerations. Savings-based income depends on investment performance and withdrawal discipline. Rental and part-time income can fluctuate. Building your retirement plan around your more stable, guaranteed sources, and treating variable sources as supplementary, is a common approach many financial planners discuss with clients.
Do I need all six income sources to have a comfortable retirement?
Absolutely not. Many households retire comfortably with just two or three of these sources. Social Security plus pension income alone covers retirement expenses for many people. The point of mapping all six categories is to make sure you are not overlooking something you already have, and to see your complete picture before assuming there is a shortfall. What matters is whether your total income, from whatever combination of sources applies to you, meets your expected expenses with some buffer for the unexpected.

Ready to See Your Complete Retirement Income Picture?

Use fidser's free retirement calculator to pull together all your income sources in one place. It takes just a few minutes, and seeing the full total might be more encouraging than you expect.

Calculate My Retirement Income
fidser.By fidser.
Published April 27, 2026

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