My wife and I used the Turbo Tax Premium to file a joint federal return for Tennessee. I also have taxable income for Arkansas, turbo tax is adding my wifes income also??

It might be included as you enter all your income in the Federal section....but later, when the Federal section is fully filled in,....when you go thru the Arkansas non-resident tax return interview, you should be able to indicate that ONLY that portion of your own income was AR taxable income.