Thanks Dave! My income is >$100k and property tax $10k+ so I assume $50 credit isn't the right option. But it is what Turbotax assigned me, and there's no way to manually fix this. A CPA at TurboTax was looking into this last week as he couldn't figure out while on the phone with me, but he never got back to me to close the loop. Are you sure TurboTax isn't considering my "NJ taxable income" which would technically be cancelled out via credit (something like NJ-COJ) since I work in NY?
