QUOTE (tom_a @ Aug 11 2008, 1:18 pm)

From a tax perspective, I doubt that you can get the refund for the full year, because AFAIK she only gets treated as your spouse tax-wise from the day she moves to Germany (i.e. if that happens in mid-December, that would only be for a few days, not for the full year). Not totally sure about that point, though.
Ummm... "Doch", as they say in German.
First, some background information:
I am assuming that the OP's tax category is 1. When you get married, if both spouses work and have a similar level of income, they are moved to tax category 4 on the following year and as far as the net salary is concerned, it makes little to no difference.
However, if one of the spouses does not work or earns considerably less than the other, the one who makes more money is moved to category 3, paying less tax, and the other one is moved to 5, paying more. But since the spouse in Cat. 5 earns less, and since the taxes are calculated as a percentage of your income, the actual total amount of taxes the couple pays can be much less.
As for the refund, when you get married in 2008, even if it is on the 31st of December, you are considered married for the whole year and your tax category is also considered to be that of a married person for the whole year (e.g. cat. 3). Therefore, you get the refund that arises from changing from cat.1 to, say, cat.3.
Also, if the marriage takes place in this year and the wife is not able to come to Germany, it makes no difference as far as the tax category is concerned, but the process is slightly more complicated. You have to document that you got married in 2008 and that your wife is not working or has considerably less income, which would allow you to change your tax cat. from 1 to 3.
This was the bit I am sure about, because I have done the exact same thing. We got married on the 14th of December and got the refund for a full year.
There is another detail you might want to check with a tax professional:
It might be possible to get an additional refund if your wife lives in another country for a certain period of time. This might come under the heading of double household, which would mean a higher refund. However, this would only be possible for the actual time you were married and not the whole year. I cannot give any details about this bit, nor can I guarantee that you will get a higher refund. As I said, a tax consultant can help you with this.
Hope this helps...