I have been looking at the financial independence retire early space for a while and one of my pet projects is to study how to create this perpetual income portfolio that provides a consistent inflation-adjusted income stream in a passive manner.
So far, here is how we set it up based on my years of looking into this:
- Delegate the management of the portfolio to someone. This is how you make it passive. If you are doing a lot of the job of the securities selection, rebalancing, adjustment during key market events, accounting for dividends, your solution is not truly passive.
- The portfolio needs a certain level of return which is related to how long you wish the money to last. If you require the income to last a long time, due to the unpredictability of the world, you will need a buffer for returns. This affects your required allocation to higher risk, higher return assets like equity. If you need the money to last perpetually, you may need to allocation 60-80% of your assets to equity to ensure that the potential return of the portfolio to be higher.
- The initial amount you design to take out of your portfolio needs to be conservative relative to the capital of your portfolio. For subsequent years, you will adjust your income taken out by last year’s inflation or the prevailing inflation needs. What kills a perpetual income plan is spending too much relative to the current portfolio value, especially when the portfolio is severely down. But the bigger issue is the need to ramp up your spending during high inflation years and you have no way of capping it.
- Your portfolio cannot be too volatile. All-in equities or cryptos with high returns may not mean you can take out a larger initial income relative to your portfolio value because volatility does matter.
How to Create a Perpetual, Passive, Inflation-adjusted Income Solution
So given the principles that we mentioned before, the ideal solution up to now is:
- A portfolio that is largely managed by the fund manager(s) with an investment philosophy you understand and believe can capture the return, in a low-cost manner. This can be an indexed portfolio, a smart beta portfolio, a boutique risk-parity or an all-weather strategy.
- You will manage the assessment of how much income to take out from the portfolio, how to take it out yourself if you are sophisticated about retirement spending down, or have a sophisticated adviser specialised in income spend-down strategy to manage this.
- Have at least 70%-80% of your money in higher potential assets like equities. Due to the future low return potential of bonds, the equities and equivalent will have to do more heavy lifting. If you have a managed solution that can give (with strong evidence) equity-like returns but lower volatility that is a consideration.
In the end, it boils down to these principles.
I accidentally chanced upon the working of Breaking the Market which explains the “Your portfolio cannot be too volatile” part of the perpetual income principle in math.
How Spending Too Much Creates High Stress on Your Income Portfolio
A lot of people will agree that spending income plus having a negative sequence of return (read sequence of return and possible solutions) in the market kills the portfolio but we will always talk about the exact historical sequence.
Breaking the market tries to look at things from random sequences.
In the table above, he showed 22 different sequences of return. Each of these sequences has the same standard deviation and the compounded rate of return.
The starting amount is 500 and ends with 304.
The growth rate is -2.46% due to volatility drag. It is a bit complicated but you can read up on it but I don’t want to discuss this today.
The returns are geometric returns, which means you multiply the returns instead of adding the returns.
The 22 portfolios are without spending.
So let us spend 5 from our initial portfolio of 500 each year. That is equivalent to 1% of the initial portfolio value.
If we factor in spending, you will observe in column 20, the ending portfolio value is different.
Row 21 has a cluster of downward moves from 4 to 11 which make this the worst sequence.
Row 22 has a cluster of upward moves early which makes it the best sequence.
He also showed that if the return is arithmetic and you spend from it, the sequence of return does not matter. The problem of sequence occurs due to this mixture of multiplication and subtraction.
Interestingly, the solution to pushing your returns from too geometric to become arithmetic seems to be constant rebalancing.
Why Volatility and Spending too much together Stresses the Income Portfolio
The main reason how volatility and high spending is a potent, negative combination is that together they increase the number of returns your portfolio needs to break even.
A lot of us know the table of how much return you need to return to break even for different portfolio drawdowns.
Most of us do not handle a big portfolio drawdown well. We start having second thoughts, strange thoughts about the portfolio. A lot sell out hoping they can buy in cheaper.
But most do not.
So they get the drawdown, but they miss the return.
When you take out an income from the portfolio, that is like an additional drawdown.
For example, suppose going back to the same example, you will spend 10% of your portfolio.
If the portfolio is down 20%, in theory, you will need a 25% gain to break even. But you subtract another 10% for your spending, your portfolio is down 30%.
So we need 90%/70% = 28.6% to break even, which is greater than the 25%.
If the portfolio volatility is halved.
If the portfolio is down 10%, in theory, you will need 11% to break even. If you subtract another 10% for the spending, your portfolio is down 20%.
You will need 90%/80% = 12.5% to break even. It is still a drag but lesser versus 11%.
Now imagine this taking place over a few years.
Breaking the Market has this table where he shows the effect of different portfolio volatility and the difference in growth rate.
In the first column, you can imagine your small-cap value fund having portfolio volatility of 22%. You have various ways to dampen the losses with a high-quality bond portfolio (not your junk bonds or investment-grade bond) such that the volatility is scaled down.
The negative growth rate in the second column can go down accordingly.
The third to fifth column probably shows as you get up to 13% volatility, that drag on volatility becomes significant.
How Different Spending Rates and Volatility Impact your Income Portfolio
So he provides this table showing the negative return depending on the volatility (0 to 22% on the vertical) and withdrawal amount (0-9% on the horizontal).
The common idea is that if you have a portfolio of 100% growth stocks or small-cap value, it should give you a higher withdrawal amount.
But if you look at the columns 7 to 9 and the last three rows, those are some big drags.
If your high return comes without volatility, you could in theory spend that 7-9% without worry.
But with volatility coming into the picture, that becomes a problem.
If we were to look at our plan, which is to go 70-80% equities, that will not dampen volatility much.
But if we spend between 2-3% (horizontal axis), the drag is between -2.88% to -2.56%. It is still high but not as bad as if you take out 8-9% of your initial portfolio.
Having 10% more bonds/cash dampen the volatility but in real life at the cost of return.
We could have a 60% equity portfolio and 40% bonds and that may bring down the volatility to the 11% to 15% volatility range, but the portfolio returns might be too low.
We need a reasonably high return, lower volatility portfolio strategy
At the end of the day, the math shows that there is this delicate dance between the return you need, volatility and your spending.
My solution is to have a portfolio that has the expectations of a high return but lower the initial income taken out so that it buffers for negative sequences. If we avert that negative sequence, we can scale up the income accordingly.
This 2% to 3% initial income range makes planning during your accumulation years easier.
If someone has a solution for a high return, lower volatility portfolio strategy, that may be ideal.
The risk-parity and permanent portfolio look ideal due to their lower volatility but in my past testing, it shows that it will fail, most likely due to not having enough returns. (Read The Permanent Portfolio Might Do Worse in Retirement than the Traditional Equity Bond Portfolio)
The research from the Smart Beta factor world shows that we could dramatically reduce the volatility and have a higher expected return with a minimum volatility strategy.
This is historical returns, but MSCI’s research shows two different time periods.
Currently, there is an Irish-domiciled UCITS ETF listed on the London Stock Exchange called the iShares Edge MSCI World Minimum Volatility UCITS ETF (MVOL).
Do check out Breaking the Market. He has a lot of nice content in this area if you are a math and investing nut.
Past performances are not indicative of future returns but we really do not have much to work with.
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