Get your taxes done using TurboTax
NO...You're doing unnecessary work. (probably some strange rounding in your situation though)
You only do Your own state, plus any US Territory (Puerto Rico etc), and the rest are lumped together as one entry as "Multiple States" (Online software) or "More than one state" (Desktop software).
(Unless you live in MN, CA, IL.....and UT is somewhat different too)
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Example for an NC resident:
