pb4uski
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I ran your two scenarios in Firecalc with both scenarios looking to spend $8k a year for 40 years (4% WR) to age 100. SPIA for a 60 year old pays ~6% so I used a 40 year time horizon.
Scenario 1: $200k invested 50% stocks/50% bonds. Results are as follows:
Scenario 2: $100k stock portfolio and SPIA that pays $6k a year. Results are as follows:
What I found interesting is that the stock/SPIA combination had much more volatility than stock/bond combination... I suspect because stocks and bonds are generally uncorrelated. It was surprising that the SPIA/stock combination had a higher success rate.
Scenario 1: $200k invested 50% stocks/50% bonds. Results are as follows:
FIRECalc looked at the 105 possible 40 year periods in the available data, starting with a portfolio of $200,000 and spending your specified amounts each year thereafter.
Here is how your portfolio would have fared in each of the 105 cycles. The lowest and highest portfolio balance at the end of your retirement was $-166,024 to $1,095,060, with an average at the end of $209,190. (Note: this is looking at all the possible periods; values are in terms of the dollars as of the beginning of the retirement period for each cycle.)
For our purposes, failure means the portfolio was depleted before the end of the 40 years. FIRECalc found that 28 cycles failed, for a success rate of 73.3%.
Scenario 2: $100k stock portfolio and SPIA that pays $6k a year. Results are as follows:
FIRECalc looked at the 105 possible 40 year periods in the available data, starting with a portfolio of $100,000 and spending your specified amounts each year thereafter.
Here is how your portfolio would have fared in each of the 105 cycles. The lowest and highest portfolio balance at the end of your retirement was $-377,883 to $3,265,272, with an average at the end of $559,850. (Note: this is looking at all the possible periods; values are in terms of the dollars as of the beginning of the retirement period for each cycle.)
For our purposes, failure means the portfolio was depleted before the end of the 40 years. FIRECalc found that 20 cycles failed, for a success rate of 81.0%.
What I found interesting is that the stock/SPIA combination had much more volatility than stock/bond combination... I suspect because stocks and bonds are generally uncorrelated. It was surprising that the SPIA/stock combination had a higher success rate.
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