Originally Posted by double vanos
Just got done replacing a too small toilet with a one piece jobbie. I like it. I have heard it's code to caulk around the base but I recommend waiting a week or two before doing that just to make sure the wax ring sealed up good. If everything stays nice and tight and dry, then caulk it up. Having said that, none of my toilets are caulked at the base because if there's trouble I want to know right away. Caulk may conceal a wax ring failure which, as noted here can be disastrous.
I caulked around the base on mine, for the reason of keeping things cleaner.
I have a Ranch House and can check for leaks by going in the basement.
Another option would be to caulk ONLY the front and sides. Leave the back area caulk free.