Planning

How Fidelity’s Retirement Planner Builds a Retirement Income Estimate

Fidelity's retirement analysis combines current savings, future contributions, retirement age, income sources, spending assumptions, and investment modeling to show where a plan may be heading.

Fidelity’s retirement planning experience is designed to answer a more useful question than ‘How much should I save?’ It tries to estimate whether your current accounts, future contributions, expected retirement date, income sources, and spending assumptions are likely to support the retirement goal you have entered.

Fidelity currently combines several older retirement-planning tools inside its Planning & Guidance Center. The result is a multi-goal planning environment where retirement can be analyzed alongside other financial priorities rather than treated as an isolated calculator.

The planner begins with the retirement goal

Fidelity asks for information such as your expected retirement age, the lifestyle or spending level you expect in retirement, current savings, future contributions, and retirement-income sources. Those inputs give the tool a target to model.

The tool is not trying to predict one exact future account balance. Fidelity’s March 2026 methodology describes the analysis as hypothetical and designed to show how current savings and estimated future contributions may affect retirement income.

Your current accounts form the starting point

A useful retirement projection needs to know what you already have. Fidelity’s current Planning & Guidance Center encourages users to include the accounts and income sources they expect to use for the retirement goal.

That can include Fidelity accounts and, where supported, outside accounts or manually entered values. An incomplete plan can create an incomplete result, which is why Fidelity’s own FAQ tells users to make sure the plan includes the accounts and income sources they expect.

Future savings assumptions matter as much as today’s balance

A 35-year-old with $100,000 saved and no future contributions has a very different outlook from someone with the same balance who plans to contribute $20,000 per year.

Fidelity’s planner therefore uses estimated future contributions rather than simply compounding the current balance. Changing the savings rate is one of the primary what-if scenarios Fidelity currently highlights.

Retirement age changes both sides of the equation

Moving retirement from age 62 to 67 can improve a projection for more than one reason. There can be five additional years of contributions and investment growth, while the portfolio may also need to support fewer years of retirement.

Fidelity specifically lists retirement age as one of the variables users can change in what-if scenarios.

The planner also considers retirement spending

A retirement estimate only makes sense relative to the income or spending goal it is trying to support. Fidelity’s retirement analysis uses spending assumptions and income needs to evaluate whether projected resources appear sufficient.

If you tell the tool that retirement will require much more annual spending, the same savings balance can look less adequate. If expected spending falls, the outlook can improve.

Income sources reduce the amount your portfolio must provide

Social Security, pensions, annuity income, part-time work, or other retirement income can reduce the withdrawal demand placed on investment accounts.

That is why a retirement projection should include those sources rather than treating the investment portfolio as the only source of retirement cash.

Fidelity can show results in today’s dollars or future dollars

Fidelity’s current FAQ notes that users can adjust how the analysis and charts are displayed, including whether values are shown in today’s dollars or future dollars.

Today’s dollars can be easier to understand because a $100,000 lifestyle today has intuitive meaning. Future dollars can look much larger because they include the effect of inflation over many years.

Inflation is why future balances can look deceptively large

A seven-figure future account balance may not buy what the same number buys today. Retirement tools therefore need to model both growth and the loss of purchasing power.

When reviewing the plan, focus on whether the projected retirement resources support the spending goal after the tool’s inflation assumptions rather than on the raw future balance alone.

The analysis is probabilistic, not a guarantee

Fidelity’s March 2026 methodology explicitly says the projections are hypothetical, do not reflect actual investment results, and are not guarantees of future results.

That matters because investment returns, inflation, longevity, taxes, health costs, and future savings can all differ from the assumptions.

What-if scenarios are the most useful part

Fidelity currently highlights the ability to test changes in savings rate, retirement age, investment strategy, and other planning variables.

Instead of asking whether one projection is ‘right,’ use the tool to see which controllable variables make the largest difference.

Example: increasing the savings rate

Suppose your current plan shows a shortfall and you contribute $800 per month. Increase the hypothetical contribution to $1,100 and see how the projected retirement outlook changes.

The value of the exercise is not the exact future dollar figure. It shows how much additional saving could improve the plan under the model’s assumptions.

If you are deciding what contribution level is realistic before changing the planner, see How to Set a Realistic Savings Rate.

Example: delaying retirement

If the plan looks weak at age 62, test age 65 or 67. Working longer can improve the outlook through additional savings, fewer retirement years, and potentially different Social Security timing.

The result can show whether a modest change in retirement timing has more impact than a major increase in current contributions.

Example: lowering the spending goal

A household may discover that the projected shortfall comes partly from an aggressive spending assumption. Reducing the target does not automatically mean accepting a worse retirement; it can reflect a more realistic estimate of taxes, housing, travel, or debt after retirement.

The key is to adjust the spending assumption because your actual expected lifestyle changed, not simply to make the tool display a more comforting result.

Linked goals make retirement compete with real life

Fidelity’s Planning & Guidance Center can monitor multiple independent goals. That matters because retirement is not the only claim on household cash.

A down payment, college savings, emergency fund, or major purchase can affect how much is available for retirement contributions today.

Our guide to How to Prioritize Financial Goals With Different Deadlines explains how to handle goals that compete for the same monthly savings dollars.

Do not enter optimistic numbers simply to improve the score

A planner is only useful when the inputs are realistic. Inflating expected returns, understating retirement expenses, or assuming future contributions you are unlikely to make can create a reassuring projection without improving the real plan.

Use conservative, supportable assumptions and update them when your finances change.

Update the plan after major life changes

Fidelity’s methodology recommends revisiting the analysis periodically and especially when circumstances change. That can include a new job, marriage, divorce, home purchase, inheritance, major salary increase, retirement-plan change, or change in expected retirement age.

A retirement projection that has not been updated in five years may be less useful than a simpler estimate built from current facts.

The tool can suggest next steps

Fidelity’s current retirement-planning page says the Planning & Guidance Center can provide suggested next steps based on the user’s outlook.

Those suggestions are planning considerations. Fidelity also says users remain responsible for deciding whether and how to implement the plan.

Investment strategy is only one input

It can be tempting to solve a retirement shortfall by choosing a more aggressive portfolio assumption. That increases expected growth but also changes risk.

A more durable plan often combines several levers: savings rate, retirement age, spending, income, and asset allocation rather than relying on one optimistic investment assumption.

Use the planner for decisions, not for precision theater

No retirement model can know future market returns or how long you will live. Its value comes from comparing reasonable scenarios consistently.

If increasing savings by 2% of income materially improves the projection across multiple scenarios, that is actionable. Whether the final modeled portfolio ends at exactly $2.4 million is much less important.

A practical Fidelity planning routine

  1. Include every retirement account you expect to use.
  2. Add expected Social Security, pension, and other retirement income.
  3. Use a realistic retirement age.
  4. Enter a retirement-spending target you can explain.
  5. Check whether values are shown in today’s or future dollars.
  6. Run what-if scenarios for savings rate, retirement age, and spending.
  7. Review the plan at least annually and after major life changes.

Bottom line

Fidelity’s retirement planning experience builds an estimate by combining current savings, expected future contributions, retirement age, income sources, spending needs, and investment assumptions. The most useful feature is not the final number; it is the ability to test changes and see which decisions materially improve the outlook. Treat the projection as a planning model, not a promise.

This article was prepared using Fidelity’s current retirement-planning overview, its Planning & Guidance Center FAQ, and the March 2026 Retirement Analysis methodology. Fidelity states that projections are hypothetical and are not guarantees of future results.

Keep the planner separate from account performance

A strong investment quarter can improve the current balance without changing the underlying savings habit. A weak quarter can temporarily make the plan look worse even when contributions remain appropriate.

Review both the long-term planning assumptions and the short-term market movement before making a major retirement decision.

Keep the planner separate from account performance

A strong investment quarter can improve the current balance without changing the underlying savings habit. A weak quarter can temporarily make the plan look worse even when contributions remain appropriate.

Review both the long-term planning assumptions and the short-term market movement before making a major retirement decision.

Keep the planner separate from account performance

A strong investment quarter can improve the current balance without changing the underlying savings habit. A weak quarter can temporarily make the plan look worse even when contributions remain appropriate.

Review both the long-term planning assumptions and the short-term market movement before making a major retirement decision.

About the writer

Rachel Morgan

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