In some states (e.g. CA) you can technically give referral fees / splits to unlicensed individuals if you do that to ALL your referral partners. I verified with the DOI that I could set up revenue sharing arrangements with other professionals or "finders" with whom I signed a contract. This is a very grey area / slippery slope situation though, so I'd prefer to do it the cleanest way which is to make sure the other person is licensed.