In NJ IRA contributions are not deductible on your NJ tax return, so your IRAs may contain basis in NJ nondeductible contributions which is what TurboTax is asking about with regard to IRA distributions. The same is not true for contributions to the federal TSP, so distributions from the federal TSP and CSRS or FERS will be taxable the same as on your federal tax return. TurboTax therefore has no need to ask the same question about your TSP, CSRS or FERS distributions that it does for IRA distributions.
