A while back I was on a W2 job and I would get a large sum on my tax return. At one point I found a calculator that helped me figure out how to configure my W4 so that I would neither owe nor be owed when it came to filing income taxes each year. The result was less tax was taken from each paycheck.
I've been self employed for the last few years and I am considering an offer that would put me back on W2 and I've been looking for that withholding calculator again but I can't find it.
How do I determine the optimal number of allowances so that I neither owe, nor receive a refund at the end of the year? I do realize it will never be exactly 0.