You will file a full year NJ resident return for 2017, and then part year resident returns in both NJ and SC for 2018. Can you take a lump sum from the 403(b)? if so, see if you can do that while still in NJ and roll it to an IRA. then draw form the IRA as needed..
SC has a retirement income deduction. For taxpayers under the age of 65, the deduction is $3,000. For seniors 65 and older the deduction is $15,000. This can be applied across all types of retirement income, including income from a 401(k), an IRA, a government pension or a public pension.
