Max Number of W-4 Allowances

[Mark S.]

What is the maximum number of allowances someone can take on their W-4?  I've read articles that pretty much say between 0 and 4 depending on filing status, children, other jobs, etc.  After completing a worksheet at one of the big tax sites, it was suggested I claim 10.  Needless to say, I have too much withheld each year and end up getting a sizeable refund.  I also have a lot of itemized deductions.  Anyway, is there a "legal" limit to the maximum?  I'm not looking at 10, but I currently have 2 and it doesn't seem to be enough.  I'm tired of giving uncle sam an interest-free loan each year.  Yes, I know, invest in real estate (working on it!), but other than that, open to feedback.