Rule of Thumb for Estimating Costs Selling?

[Tim Kaminski]

Have never sold a property but I get offers quite a bit. Most claiming to cover closings costs/sellers cost.

Is there a general rule of thumb for what to expect to pay in fees/taxes when selling a property? I have heard 15%?

(Offer)-(What I Owe)=X*(0.85)=ACTUAL TAKEHOME $$

I am asking about the 85% I have written in equation.