davidm wrote:First post on the board so be gentle. I am somewhat confused about withdrawal rates as a way of thinking about whether my retirement pot is large enough. From the literature I've read the US SWR is 4% and the UK SWR is 3-3.25%. However, other countries have even lower SWRs (Japan is < 1%).
Questions:
1. I'm early 40s so could be looking at a retirement of potentially 60+ years. Some say the SWR is valid forever, others for 30y. Who is correct?
you have to check the small print of each planner you're using. the results may not be very different for 30y and 60y, because a lot of the successes at 30y have a higher 30y-figure than starting figure, and so have a good chance of surviving the next 30y, too. but of course there will be some failures in those next 30y.
2. Does the analysis typically exclude fees, taxes etc?
i'd expect to input that when using a planner.
3. The inflation adjustment (CPI/RPI) adjusts for cost of living increases. But what about the fact that the standard of living generally improves? I don't want to lock myself into a standard of living for 2017 when it's 2067 etc (conversely imagine being locked into 1957 living standard now). Do people adjust their SWR lower to take account of this issue? Also is CPI a valid metric if service price inflation (say care home costs) might be a big ticket item?
tricky 1. though it may be a smaller factor than measuring inflation correctly, given that CPI and RPI differ by about 1% a year. perhaps many older people don't bother with some of the new/improved products/services that come out, but that is less valid if you're FIRE-ing in your 40s. i would certainly want more margin for error, with such early retirement.
are care home fees going to be covered by your spending plans in the same way? spending patterns would change dramatically on entering a care home. and you might plan to pay for it by selling your home (and perhaps buying an immediate-needs care annuity).
4. If globalization continues, wouldn't we expect some sort of convergence of SWRs i.e if people can get much better real returns in US over Japan, aren't capital flows eventually going to erode that? Does that argue for using an average global SWR?
i agree. i don't really understand why people say there are different SWRs for different countries. that seems to be based on the assumption that the top/middle/bottom-performing stock markets of the last 100 years will continue to be top/middle/bottom-performing respectively. i would say: different markets can perform very differently, but we don't know which will do better in the future, so diversify your equity investments globally, and then you will get something like the average SWR.
it's not very clear what that average SWR is. we only have 100 or so years data for most stock markets, which only gives about 4 non-overlapping 30-year periods (or 2 non-overlapping 60-year periods!). that is very little to go on.
I've tried using the Flexible Retirement planner (can't post link) to get a feel for what pot I might want (I've also used cfiresim). Using the following parameters: retirement age 45, longevity 100, inflation 3%, inflation vol 3%, tax rate 30%, asset returns 6%, asset return vol 10% then I find that even an withdrawal rate of 2% means my success rate is only 79%. That's a real rate assumption of 3%. With a 4% real rate it goes up to 92%. To allow for a 3% withdrawal rate I need real rates to be around 6% to get above 90% success.
that 30% tax rate is very high. after paying 30% tax on 6% returns, you have 4.2% net. after 3% inflation, that is 1.2% net real return. which would explain the discouraging results.
it's unlikely you'd pay 30% tax on investment returns in the UK. investment returns are taxed much more lightly than earnings.
leaving aside taking income from pensions for now (since you can't do that yet), hopefully you are putting as much a possible into S&S ISAs, on which there is no tax.
for unwrapped investments, when you are not earning anything, if you can organize your investment gains to comprise £17,000 in interest, £5,000 in dividends, and £11,1000 in realized capital gains, than there is no tax to pay - that's on your first £33,100 in returns. and if you can organize the next £20,000 or so to be more dividends, you only pay 7.5% tax on that, which leaves you paying £1,500 tax on returns north of £50,000, which is about 3%. and if you can take all returns over that first £50,000 or so as capital gains, then you pay 20% tax on them.
so i'd suggest reducing your tax figure to something more realistic
It isn't the average end result which is the issue (often the average portfolio ends up worth more than at the start). It's the sequence risk that's the problem. A bad string of early returns and there is no way back. In that sense it's not the real rate that's driving the success rate but the asset return vol assumption. If I lower asset return vol then higher success rates can be achieved with lower real rates. However at 10% return vol doesn't seem high for a equity heavy portfolio.
10% volatility sounds in the right ballpark for 2/3 equities, 1/3 bonds. all equities might be 15% or so. (these figures are just a vague idea.)
3% real return (before tax) might be fair for a mixed-asset portfolio.
Frankly I'm rather confused/depressed. My analysis seems to imply that even an SWR of 2% might be risky. Help I'm never going to retire!
mainly, change your tax rate assumption.
but also note that the SWR calculations are based on an inflexible spending plan: always increase it with inflation. if you can be flexible - i.e. if investments start out badly, either cut spending, or earn some more money after all, or take in a lodger - then you can be less cautious with the initial withdrawal rate.