In Roth IRA’s, which are also tax-free, there are government restrictions that prevent people from adding more than $6,500 per year ($7,500 if over 50), which keeps you from building a large nest egg for retirement. Also, there are limits in how much you can earn in order to have access to tax-free growth. Lastly, there are limits to when you access your money (59 ½ years old), or if you do access it, there are penalties and fees involved. The Roth IUL has none of those limitations.