Couples in same-sex marriages have been able to file federal taxes as married since 2013, but questions still arise. Here's a recent question from a reader: if I'm in a same-sex marriage, can I claim my spouse as a dependent? The answer to this question is: no.
Nebraska recently released new guidance for how couples in same-sex marriage will file Nebraska tax returns.
The marriage penalty came about in 1971 and got worse in the next 10+ years.
This blog post shows examples of the marriage penalty, which came about in 1971.