I've been researching intensively for prospective retirement over the last year or so - here's a few summary points.
do not include your PPOR in your assumed-income-producing assets - unless you want to take in boarders, which is another story and should probably cost you in tax, etc.
spare cash tends to come from unencumbered assets - I have IPs but with mortgages - slightly positive gearing - I could sell one to pay off most of my loans but that would raise my taxable income
long term most say you should expect to draw down no more than 3-4%pa of your capital to allow for growth and not shrink your earning capital long term (if you plan to burn it all up before you turn 65, and then live off the pension, that could be a big drop in prospective lifestyle -$100kpa to $12kpa ?)
so - using 3-4% - if you want $100kpa (per person!? - u must already be in the 0.1%!) then you would need a capital base of $2.5-3.3M - unencumbered - and excluding your PPOR
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