How does Ohio treat income made in CA for the half year I lived in CA? Line 3 of OH tax form shows total income for both states. How do I adjust this to only show OH?

[Hal_Al · Accepted solution]

It is correct for the OH tax form to show total income on line 3.

Ohio does a convoluted tax calculation for non-residents/part year residents. It calculates tax on total income, then it calculates a non resident/part year resident credit, which it subtracts from the tax it calculated on the total income. The credit is calculated as your non-Ohio income divided by Total adjusted Income multiplied by the total tax. TurboTax (TT)   does this by allocating your income as either Ohio or non-Ohio. W-2 income will be allocated by the state name abbreviation shown in box 15 of your W-2. TT will ask you, item by item, in the state section, how much of your other income is Ohio or non-Ohio income. Make sure that your non-Ohio wages show CA (Other state postal abbreviation)  in box 15 of your W-2 screen, with the CA amount in box 16.