Investors often overlook the need to adjust for inflation when calculating the total withdrawal amount needed to support their retirement income and lifestyle (in addition to Social Security benefits, pension income, part-time work, rental income and so forth).
Current U.S. Inflation Rates: 2001-2023
Inflation Risk Is The Silent Retirement Killer
Investors often overlook the need to adjust for inflation when calculating the total withdrawal amount needed to support their retirement income and lifestyle (in addition to Social Security benefits, pension income, part-time work, rental income and so forth).
From 2001 - 2023, the average annual inflation rate for the United States was #.#%. The lowest annual inflation rate (actual deflation rate) during that period was -0.4% in 2009. The highest annual inflation rate during that period was 8.0% in 2022. *
* Source: usinflationcalculator.com*
At first glance, a #.## average annual inflation rate may appear to be somewhat inconsequential, however, inflation can have a significant impact on your long-term retirement income and lifestyle plan.
Example:
(a) Let's assume you retired on December 31,1999, with a $1,250,000 retirement nest egg at age 65,
(b) you took a 4% withdrawal to receive an initial $50,000 retirement income to maintain your retirement lifestyle (in addition to Social Security benefits, pension income, part-time work, rental income and so forth), and
(c) you adjusted your annual retirement income withdrawal amount each year thereafter with the actual inflation rate [(an inflation COLA (Cost Of Living Adjustment)] to maintain your retirement lifestyle.
Year Withdrawal Amount Needed To Maintain Your Retirement Lifestyle
12/31/1999 Retire with $1,250,000
1 (2000) $1,250,000 x 4.00% = $50,000 initial retirement income withdrawal
2 (2001) $50,000 + 2.8% inflation = $51,400 retirement income withdrawal
3 (2002) $51,400 + 1.6% inflation = $52,222
4 (2003) $52,222 + 2.3% inflation = $53,424
5 (2004) $ + 2.7% inflation = $
6 (2005) $ + 3.4% inflation = $
7 (2006) $ + 3.2% inflation = $
8 (2007) $ + 2.8% inflation = $
9 (2008) $ + 3.8% inflation = $
10 (2009) $ + (-0.4%) deflation = $
11 (2010) $ + 1.6% inflation = $
12 (2011) $ + 3.2% inflation = $
13 (2012) $ + 2.1% inflation = $
14 (2013) $ + 1.5% inflation = $
15 (2014) $ + 1.6% inflation = $
16 (2015) $ + 0.1% inflation = $
17 (2016) $ + 1.3% inflation = $
18 (2017) $ + 2.1% inflation = $
19 (2018) $ + 2.4% inflation = $
20 (2019) $ + 1.8% inflation = $
21 (2020) $ + 1.2% inflation = $
22 (2021) $ + 4.7% inflation = $
23 (2022) $ + 8.0% inflation = $
24 (2023) $ + 4.1% inflation = $
Total Retirement Income Withdrawals = $
Notes:
(a) Due to inflation, $###,### in year 2023 had the same purchasing power as $50,000 in 2000.
(b) The total retirement income withdrawals over the 24 years = $#,###,###, which represents an average annual retirement income withdrawal amount of $##,### to maintain your retirement income and lifestyle.
If you had simply estimated retirement income withdrawals of $50,000 for each year, the total retirement income withdrawals over the 24 years = $#,###,###... which represents an underestimate of $###,### ($#,###,### - $#,###,###) to maintain your retirement income and lifestyle.
Make sure you account for inflation in your retirement income and lifestyle plan.
EFFECTS OF 4% INFLATION
According to CPI: *
*CPI, Bureau Of Labor Statistics
Impact Of Inflation On Your Net Worth
What can happen if your net worth is unprotected from inflation? At that same 4 percent rate of inflation, your net worth can dramatically decline.
With inflation at just 4 percent, your assets would be cut in half in 18 years. The purchasing power of a $1,000,000 nest egg today, would be reduced to $460,000 over the course of a 20-year retirement (see the following table).
DECLINE IN PURCHASING POWER
Assuming a 4% rate of inflation, the following table illustrates how a $1,000,000 purchasing power in today’s dollars can erode over time:
THE RULE OF 72
The Rule of 72 demonstrates the impact inflation can have on your purchasing power. Divide 72 by the expected rate of inflation to determine how long a given rate of inflation would take to cut the purchasing power of your money in half:
A Safe Way To Lose Money?
When you combine the effects of taxes and inflation, many investments offer what some would call “a safe way to lose money.” *
Assumptions:
Initial Investment: $10,000
Interest after one year (5%): $ 500
Less Federal Income Taxes (25%): ($ 125)
Net After-Tax Interest: $ 375
Net After-Tax Investment: $10,375
Divide by 1.04 (4% inflation): / 1.04
Net After 4% Inflation: $ 9,976
Total Return After Taxes And Inflation ( .24%)
*This is a hypothetical example and is used for illustrative purposes only. Only federal taxes are considered (no assumption was made for state taxes). Actual results will vary.

Example B: Future Estimated Inflation
Assumptions:
(a) you plan on retiring with a $1,250,000 retirement nest egg at age 65,
(b) you plan on taking a 4% withdrawal to receive a $50,000 initial target retirement income in year one (in addition to Social Security benefits, pension income, part-time work, rental income and so forth),
(c) you estimate a 3.00% annual inflation rate, and
(d) you estimate you will live another 25 years to age 90.
Year / Withdrawal Amount Needed To Maintain Your Retirement Lifestyle
Year 1 $1,250,000 x 4.00% = $50,000 initial target retirement income withdrawal
Year 2 $50,000 + 3% inflation = $51,500
Year 3 $51,500 + 3% inflation = $53,045
Year 4 $53,045 + 3% inflation = $54,636
Year 5 $54,636 + 3% inflation = $56,275
Year 6 $56,275 + 3% inflation = $57,964
Year 7 $57,964 + 3% inflation = $59,703
Year 8 $59,703 + 3% inflation = $61,494
Year 9 $61,494 + 3% inflation = $63,339
Year 10 $63,339 + 3% inflation = $65,239
Year 11 $65,239 + 3% inflation = $67,196
Year 12 $67,196 + 3% inflation = $69,212
Year 13 $69,212 + 3% inflation = $71,288
Year 14 $71,288 + 3% inflation = $73,427
Year 15 $73,427 + 3% inflation = $75,629
Year 16 $75,629 + 3% inflation = $77,898
Year 17 $77,898 + 3% inflation = $80,235
Year 18 $80,235 + 3% inflation = $82,642
Year 19 $82,642 + 3% inflation = $85,122
Year 20 $85,122 + 3% inflation = $87,675
Year 21 $87,675 + 3% inflation = $90,306
Year 22 $90,306 + 3% inflation = $93,015
Year 23 $93,015 + 3% inflation = $95,805
Year 24 $95,805 + 3% inflation = $98,679
Year 25 $98,679 + 3% inflation = $101,640
Notes:
(a) The withdrawals over the 25 years total $1,822,963 (average $72,919 withdrawal per year vs. only $50,000 in Year 1).
(b) Due to a seemingly insignificant estimated 3.00% annual inflation rate, it will take $101,675 in year 25 to have the same purchasing power as $50,000 in year one.
(c) The Four Percent (4.00%) Rule simply means you withdraw 4.00% of your initial investment and retirement income portfolio in year one. The withdrawal percentage each year thereafter will fluctuate depending upon the performance of your portfolio.