Required Withdrawal Rate

Following up from the discussion on the safe withdrawal rate here is the history of our required withdrawal rate. This is the past twelve months spending divided by net worth minus housing equity, assuming that we have no other sources of income:

 

Retirement first looked possible in 2018 when we received the inheritance. Without that, we would likely be only just on the cusp of the 4% SWR currently. But then expenditure rose around the birth of our second child and the stock market fell in the pandemic and we went back above the 4% level. There was a voluntary redundancy scheme at my workplace in 2020, but I decided I couldn't afford to do it. 

Since then, we dropped back to a fairly consistent 3% till recently. I was waiting for another voluntary redundancy scheme though I thought about going part-time from age 60. Early this year there was a new scheme and  I submitted my application. Then I panicked and didn't take it up. Meanwhile, markets rebounded and we are now near 2%. My employer reopened the scheme and this time I am doing it. 

My forward projections assume that real expenditure will continue to grow linearly, though actually it looks like it has flattened out:

 

I do assume step downs in spending when each of my children reach age 21. In my worst case scenario, if we only made zero real investment returns after 2026, then our net worth would about halve in real terms by 2050. Our required withdrawal at that point would be 5.5%. That assumes that we don't downsize our house or cut spending.

In the best case scenario–historic rates of return of 8.4% nominal per year–we would have 4 times our current net worth in real terms in 2050.

Something people in the FI community don't talk about is that if you annuitise your wealth you can then withdraw much more than 4%. Maybe 6-7%. This is because you pool longevity risk with other people.