How much of one's income should be spent on rent?

1/3 of your net income.

Let's say you make 150k base salary in the state of California. After taxes that's around 92k as your net income excluding yearly profit sharing, bonuses, and stock options. 1/3 of that is around $2500 a month.  So $2500 should be what you spend on rent each month.

The 1/3 amount is just a common amount in personal finance. However, you can spend more since you still have 5,000 left over. That's more leftover than let's say... Someone making 80k a year. There's also your yearly bonuses which can also be a lot, possibly half of your base income or more.

At least that's how it is in San Francisco.

Cheers.

Typically (at least where I live) it estimated that you should be spending no more than 30% of you income.  However, if you are able to spend less, you will probably be better off.

You always hear "30% of your net income".... Nonsense. Housing is too expensive now. Sure, if you're rich like Nazis or rich like Mormons, it's no problem. But for the rest of us normal, non-Cabal folk, try spending no more than 50% of your take-home on where you live. You'll still get by.