I was married in November of 2017. What is the correct way to file taxes? Married filing separately?

[JulieCo]

Yes, you can file as married filing separately OR you can file a joint return with your spouse.  Generally, filing jointly will give you a bigger refund or less taxes due. When you file separately, your tax rate is higher and you won't be able to certain deductions or credits that you may only qualify for if filing a joint return. It won't matter if you were single when you earned the income, as the IRS uses your marital status as of Decmeber 31 for that year's income return.

Here is more information on filing jointly versus separately:

https://ttlc.intuit.com/replies/3288477

[west12]

do. I. use. my. married. last. name. are. my. old. name. to. file

[VolvoGirl]

You should use your legal name.  Did you change it when you got married?  It's ok to have different last names on a Joint return.

[xmasbaby0]

Use the name that matches your current Social Security card.  As VolvoGirl said, though, it is fine to use your maiden name if you need to.  There are plenty of married women who retain their names and use them legally and professionally.  You can still file a joint tax return,