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Fair point, but if the original statement is true it must have a basis in relatively fixed numbers? I guess if we're talking S&S it could use average performance over time or something but I was thinking more about the pension or cash ISA where the returns are more likely to be fixed. What would be neat is plugging in some values, aiming it at a particular bank or product and have it grab the current rates to compare.
Or yeah, where can I get a crystal ball.
hippy-
I think the risk (which might be why it's not a more commonly offered thing) is that the same factors which impact returns on one thing also impact the others, e.g. low interest rates make mortgage cheap (low savings from overpay) but push up asset prices (might be good for stocks).
You can chuck some fixed numbers in but there's a big risk it would be misleading if you use e.g. s&p averages over a long ish period.
I'd be surprised if your pension gives fixed return unless it's fixed the return at a number which is pretty low!
andyfallsoff
You mean a crystal ball that will tell you what returns you'll get on various investments?