Early Termination of Lease - What does your lease charge?

[Steve S.]

In general, what is standard operating procedure for terminating a lease early?

I've seen it where 60 days notice is required, tenant pays full amount for the month they terminate in and forfeits their deposit. 

HERE's AN EXAMPLE:

Let's say a 12 month lease terminates September 5th 2018.

Tenant offers 60 days notice on April 12th.   Tenant moves out on the 60th day (let's say that's 6.12)

Monthly rent is $1,200.  Deposit was $1,200 

What is standard for what they would owe?