Age-Based Savings Goals Methodology and Assumptions
Age-based savings goal ranges are based on a target savings range at an assumed retirement age of 65, and a savings trajectory over time needed to achieve the target. In determining age-based savings goal ranges, we assume a savings rate of 6% at age 25 and increase the savings rate by 1% annually until reaching the necessary savings rate to achieve the target savings range at retirement. (We assume 3% of the savings rate is attributable to employer contributions.) While we believe most people should aim to save at least 15% (including employer contributions), the necessary savings rate can be higher or lower depending upon marital status and household income which we assume is between $75,000 and $250,000 (“Tested Salaries”). Household income grows at 5% until age 45 and 3% (the assumed inflation rate) thereafter. Investment returns before retirement are 7% before taxes, and savings grow tax deferred.
In determining the target savings range at retirement, we assume 4% of assets will be withdrawn at age 65 (an annual withdrawal rate intended to support steady inflation adjusted spending over a 30-year retirement). The withdrawal amount is calculated as the income that we estimate is necessary to support spending in retirement minus estimated Social Security benefits. (That withdrawal amount divided by preretirement income equals the “Non-Social Security Income Replacement Ratio.”) The Non-Social Security Income Replacement Ratio, which varies widely for the Tested Salaries, reflects estimated spending needs in retirement (including a 5% reduction from preretirement levels); Social Security benefits (using the SSA.gov Quick Calculator assuming claiming at full retirement ages and the Social Security Administration's assumed earnings history pattern); state taxes (4% of income, excluding Social Security benefits); and federal taxes (based on rates as of January 1, 2019). While federal tax rates are scheduled to revert to pre-2018 levels after 2025, those rates are not reflected in these calculations.
The mid-points of the age-based savings goal ranges are good starting points for benchmarking your progress, but circumstances vary by person, and over time. The savings goal ranges cannot guarantee retirement income of any specific amount and may not be applicable for those with earnings that vary widely from the Tested Salaries. The assumptions used may not reflect actual market conditions or your specific circumstances, and do not account for plan or IRS limits. These savings goal ranges assume you'll be dependent primarily on personal savings and Social Security benefits in retirement. However, if you have other income sources (e.g., pension), you may not have to rely as much on your personal savings, so your savings goal range would be lower.
The material is provided for general and educational purposes only, and is not intended to provide legal, tax, or investment advice. This material does not provide fiduciary recommendations concerning investments, investment strategies, or account types. It is not based on your particular needs or individualized circumstances and is not intended to suggest that any particular investment action is appropriate for you.
Retirement Income Experience and Confidence Number® Methodology and Assumptions
Overview
The Retirement Income Experience allows retirement savers to estimate the durability of their current savings across 500 randomly generated market scenarios, and to assess the impact of different savings rates, time horizons, and other variables have on the projection of retirement income. The projections are used to provide retirement income estimates and to calculate a Confidence Number® score. The Confidence Number® score represents a snapshot of the likelihood that your retirement savings will be sufficient to generate income throughout retirement sufficient to meet an assumed or specified Retirement Income Goal (i.e., spendable, after-tax income).
The projections generated by the tool regarding the likelihood of various investment outcomes are based on historical performance data of specific asset classes as described below, but are hypothetical in nature, do not reflect actual investment results, and are not guarantees of future results. The tool presents only a range of possible outcomes. There can be no assurance that the projected or simulated results will be achieved or sustained. The potential for loss (or gain) may be greater than demonstrated in the simulations. Results may vary with each use or over time, depending on changes to your inputs or periodic updates to the underlying assumptions. See "Limitations."
1. Data Used and Hypothetical Projection Methodology
Data and Assumptions about You. In order to determine how likely your current and projected retirement savings are to last through retirement, we use data and assumptions about you, as follows.
Calculating Hypothetical Future Values. The tool uses Monte Carlo analysis to generate 500 hypothetical market scenarios so that users can analyze hypothetical outcomes for specific asset class portfolios under a range of market conditions. (Asset classes used are limited to stocks, bonds and cash.) Monte Carlo analysis provides ranges of potential future outcomes based on a probability model. Monte Carlo analysis creates potential simulated portfolio values by using asset class portfolio returns selected randomly from a consistent data set comprised of 400,000 potential annual return values. These rates account for the historical returns of the Representative Indices from the Index Data Start Date noted in the chart to 2023.
Data Used in Methodology | Stocks | Bonds | Cash |
---|---|---|---|
Long-Term Compound Annual Rate of Return | 8.8% | 4.9% | 3.2% |
Representative Index | S&P 500* | Bloomberg Barclay U.S. Aggregated Bond* | IA SBBI US 30 Day T-Bill |
Index Start Date | January 1929 | January 1960* | January 1929 |
*Ibbotson SBBI US Large stock (January 1926 - January 1970); S&P 500 (February 1970 - Present)
*IA SBBI Intermediate Government from January 1960 to December 1972. Bloomberg Barclay US Govt/Credit (January 1973 - December 1975). Bloomberg Barclay U.S. Aggregate Index since January 1976.
These returns do not reflect fees and expenses or the effects of inflation.
We assumed a variability of returns based on historic volatility data from market indices:
Timeframe of Volatility | Stocks | Bonds | Cash |
---|---|---|---|
Annual Volatility | 16.7% | 4.3% | 2.1% |
Finally, we assumed that returns of each asset class would move in correlation to the other asset classes in a manner consistent with historical experience as follows:
Asset Class | Stocks | Bonds | Cash |
---|---|---|---|
Stocks | 1 | 0.1 | 0.0 |
Bonds | 0.1 | 1 | 0.4 |
Cash | 0.0 | 0.4 | 1 |
The correlation (which can range from -1.0 to 1.0) indicates how much the assets move in tandem. The closer the value is to 1.0 indicates the higher the tendency the assets have to move in the same direction.
We use the assumptions above for all taxable and tax-deferred accounts. Unless you are invested in a T Rowe Price retirement date investment, the projections assume that your asset allocation will remain static (i.e., we do not assume that you will gradually reduce your equity exposure over time, making your portfolio more conservative).
Estimating Taxes. Tax rules are applied throughout the tool’s simulation process, including required minimum distribution (RMD) rules that apply to some tax-deferred accounts. The tool estimates your federal, state income, and capital gains taxes based on the current federal and state tax tables. The tool uses your salary data, as well as any income data provided for your spouse/partner, to estimate federal and state tax exposure when performing simulations and proving retirement income estimates.
Taxable Account Modeling. For taxable accounts, the tool estimates annual taxes on yield and capital gains when performing simulations and providing retirement income estimates. To compute taxes on yield, the tool determines if the yield is in the form of an equity dividend or a fixed income coupon. Federal dividend tax rates are applied to equity dividends and federal marginal ordinary income tax rates are applied to fixed income coupons. To compute capital gain taxes, the tool first calculates the assets that need to be sold each year when performing projections. Then the long-term capital gain rate is applied to these estimated realized capital gains on the assets sold.
Retirement Income Projections and Withdrawal Assumptions. In order to calculate your retirement income estimates and your post-retirement plan balance, we use the 80th percentile from the 500 hypothetical return projections. We provide an income projection for both your current strategy as well as any modeled strategy. Our monthly and annual retirement income estimates show spendable, after-tax amounts that succeed in at least 80% of the market simulations (i.e., leave at least $0.01 in the Plan at the end of retirement), and are displayed in today's dollars (unless noted otherwise). Projected retirement plan balances are displayed in future dollars.
We assume withdrawals necessary to achieve your Retirement Income Goal from the 80th percentile, pro rata, across asset classes. We build into the withdrawal assumptions Morningstar’s proprietary U-shaped “retirement spending curve,” which includes expectations about consumption throughout retirement; namely, expenditures tend to decrease for retirees throughout retirement and then increase toward the end.
We assume that required minimum distributions from employer sponsored retirement plan balances and non-Roth IRA accounts begin at age 73 and are made in annual payments. To the extent Social Security payments, pension benefits, and/or required minimum distributions exceed your estimated spending needs, we assume the amounts are reinvested in a taxable account (and we use the return assumptions above that apply to cash).
In withdrawing to meet your Retirement Income Goal, we assume a specific withdrawal sequence from account types. We start with any required minimum distributions. We then move to taxable accounts (if any), followed by tax-deferred accounts. With tax-deferred accounts, we assume withdrawals will come first from nonqualified deferred compensation accounts (if any), followed by after-tax sources and accounts (e.g., non-deductible IRAs), and then pre-tax sources and accounts. Finally, we withdraw from any tax-free Roth sources within your employer sponsored retirement plan(s) and then Roth IRA accounts.
Savings and Retirement Age Strategy Modeling. We’ve estimated a total retirement plan contribution rate and retirement age that will help improve your chances of achieving your Retirement Income Goal throughout retirement. If you’re enrolled in auto increase, we account for those annual increases in our calculations. We encourage you to explore different contribution increases and retirement ages to model the impact on your estimates and projections. Any suggested contribution modeling increases will default to pretax until you reach the IRS contribution limit and then to after-tax (if available). If your plan offers Roth deferrals, you can model the impact of Roth changes.
If multiple retirement plans are modeled, the plan with the greatest employer match contribution is prioritized, then the plan with a lower match is utilized. When match is maximized in each plan, suggested contribution modeling increases are then prioritized based on the plan with the higher account balance.
Confidence Number® Score. The hypothetical projections are used to determine your Confidence Number® score. This number is calculated on a 100-point scale. The basis of the Confidence Number® is the Simulation Success Rate, which is a probability measure and represents the percentage of times outcomes succeed in providing the target retirement income goal each year in the analysis.
Retirement Income Over Time Chart. This graph represents the various sources of income in retirement. Your workplace plan account(s), any personal retirement accounts held at T. Rowe Price, and any other T. Rowe Price or outside investment accounts that you’ve added are used to generate the estimates shown in the "Savings" portion of the graph. The "Pension" portion of the graph provides an income estimate from any applicable workplace pension plan, or other pension amounts that you’ve added. The “Social Security” portion of the graph represents an estimate of Social Security benefits based on your assumed or stated claiming age. Estimated taxes have been taken out of Social Security and any applicable pension amounts. Higher withdrawal amounts may be necessary from your savings due to withholding requirements or the need to pay taxes.
Optional Variables. The following optional variables can be added for a more holistic view of your retirement income projection and Confidence Number® score.
If you include or change any of these variables, you must ensure the information is current and accurate in the future. The only values automatically updated are those imported using the Envestnet Yodlee aggregation capabilities.
2. Limitations
While Confidence Number® score and the Retirement Income Experience have been designed with reasonable assumptions and methods, the tool provides hypothetical projections only and has certain limitations.
The information provided in this tool is for general and educational purposes only, and is not intended to provide legal, tax, or investment advice. This tool does not provide fiduciary recommendations concerning investments, investment strategies, or account types. The information provided in this tool is not based on your particular needs or individualized circumstances and is not intended to suggest that any particular investment action is appropriate for you. Other T. Rowe Price educational tools or advice services use different assumptions and methods and may yield different outcomes. If you wish to receive a personalized financial plan, please seek the advice of a licensed personal financial planner.
Important: The projections or other information generated by the Retirement Income Experience regarding the likelihood of various investment outcomes are hypothetical in nature, do not reflect actual investment results, and are not guarantees of future results. The simulations are based on assumptions. There can be no assurance that the projected or simulated results will be achieved or sustained. The charts present only a range of possible outcomes. Actual results will vary with each use and over time, and such results may be better or worse than the simulated scenarios. Clients should be aware that the potential for loss (or gain) may be greater than demonstrated in the simulations.
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