It depends. If you lived together in 2017 and file separately then *you* are required to put half if her community income on *your* tax return and she must do the same on her separate return. That is one of the hazards of filing separately in a community propriety state.
If you have been total separate for all of 2017 then you might be able to disregard the community property laws - depending on the laws of your state. You should consult with a tax professional that knows the state community property laws of your state.
Community property states. If you live in Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, or Wisconsin and file separately, your income may be considered separate income or community income for income tax purposes.
See Publication 555. <a rel="nofollow" target="_blank" href="
http://www.irs.gov/publications/p555/index.html">http://www.irs.gov/publications/p555/index.html</a>
See this TurboTax article for help with this.
<a rel="nofollow" target="_blank" href="
https://ttlc.intuit.com/questions/1894449-married-filing-jointly-vs-married-filing-separately">https...>
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**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**