MARRIAGEPENALTY
Marriage penalty
The marriage penalty in the United States refers to the higher taxes required from some married couples filing that would not be required by two otherwise identical single people with exactly the same income, as well as the higher taxes that one partner to a marriage may pay on marriage, while the other partner receives a "marriage bonus" or lower taxes. Multiple factors are involved, but in general, in the current U.S. system, the earner in a single-income couple usually benefits greatly from filing as a married couple, while the nonearner in a single-income couple and both earners in dual-income couples receive "marriage penalties" whether ...The above text is a snippet from Wikipedia: Marriage penalty
and as such is available under the Creative Commons Attribution/Share-Alike License.