Tithe or Give?

I finished my taxes yesterday, yay! AND I'm getting a refund. As a friend said, "isn't nice to be so poor you just get all your money back?" Yes, yes it is.
When I realized I was getting money back my first thought was "Do I need to tithe this money?" I felt a little guilty, thinking I probably should in some sort, but a little irritated because, well, it's my money.
The idea quickly fell out of my mind as other, more pressing things pushed their way in.
Later, I had a very different thought as I was finishing up my taxes, it was, "Wow, I can give some of this away." It made me contemplate my view of money and God's provision. Because really, I have a choice with my money. I can view it as mine and feel that I "have" to tithe to be a "good Christian" or I can constantly hold it to God with open hands and realize that he's allowing some of it to fall back into my hands and out of thankfulness I can freely give.
Without a job, it's so much easier to hold onto every penny, but really it's all his. He has obviously provided for me thus far and he will continue to. I have trusted him and can continue to trust him to provide, and he's trusting me with this.
So hey, I can give some of this money away.