I just did our taxes this past weekend, in fact, I always do my taxes around the second weekend in February, just after having received all my paperwork. Then, if I owe money (only happened once in a year when I didn't work at all and had some interest income), I wait until April 15th to mail off my check. (I always think of Señora Gomez (Spanish teacher in HS) on tax day, it's her birthday.) If I'm getting money back, I send it in immediately.
There are 2 schools of thought on income tax refunds.
The first is that if you get a refund, you are allowing the government to use your money interest free, and you are actually losing money, because you could have been earning the interest on it.
The second is that, come tax time, you absolutely under no circumstances want to have to pay a dime, because you suck at saving money and you're not sure you'll have it to pay.
I fall in the second category, so for my paycheck (the paperwork I filled out with HR), I always claim at least 1 less dependent than I have, advice I got from my dad that has yet to fail me. Actually, both Clinton and I are on file as single and none. And then we file our taxes married filing jointly, claiming ourselves and Landon and itemizing, we get a much larger refund and are able to do some things with that money annually, that we wouldn't normally get to do. I think of it as a savings account. Unfortunately it's a non-interest baring savings account, but it's a savings account none the less.
This year's income tax refund, is paying for...windows! Actually, it's going towards the loan we got for the windows, but that's good enough. Or possibly towards an equal amount of a higher interest other debt.