CT started this practice, and its history tells you to beware! The entity must pay 6.99% for each partner/shareholder (the state's top tax rate that usually applies to people who make $1 million or so). Initially only 93% of that got passed through to the individuals. Made sense--the entity deducted 7% from its income and the individuals got 93% of the payment because the income passed through has already been reduced. Now, however, the individuals only get 87.5%, so the state is keeping the difference (a disguised entity tax?) Also, entities must pay quarterly and electronically--no excuse if they don't have any money like some small entities (like a partnership that has to pay say $3k quarterly but only has $2k in the bank at the time--what to do?) While it sounds like the state is trying to help folks overcome the SALT limit, it's a money grab. Some states only require the tax on nonresident partners whom they might not otherwise hear from.