There is a cap but I think a large part of that is to prevent people from complaining about the size of pensions paid out by the government. What you get back

There is a cap but I think a large part of that is to prevent people from complaining about the size of pensions paid out by the government. What you get back from the program is a function of what you put in and if you allowed people to put in the portion from $1 Million of income you might owe them $200K pensions after 40 years. I don't think the public has appetite for that.