I have used many calculator throughout the years, just to realize I was probably miscalculating my FI date... by 7 years !
Indeed, many calculators take into account your home as an asset which obviously has equity and provides networth.. The only issue I have with that is that it is a networth/equity that is not "realized". You can really use it unless you invest in turn with it.
Same with RE. All calculators are using rate of return from stocks... What if your RE is negatively geared, like some many in Australia? Etc etc...
ie you have a home valued at $700k, paid $500k and $400k sitting on an offset account... Cannot count it in your networth IMO.
Same with an IP that is negatively geared, even if the property goes up in value x 3, you still cannot get the income produced by it unless you start repaying the interest via an Offset
Curious on what the RE investors guys are using as a FIRE calculator.