Scarlet, that is just what I did... I claim 6 or 7 thru 1/2 of the year, when working overtime. If working 40 hour weeks, I claim 3 or 4. With all the deductions, we get back a little, but never have to pay in.
The first 3 years of all-year-overtime, we got $7000, $5000, and $3000 returns from the govt. I bought some more bikes then, of course (hehe)m then figured out that I was getting too much withheld. Now its fixed, I think... we will see in a week or so.
I am, all for a flat tax... 10% with zero deductions. Period... for everyone.