profil

Corporate IR - Work with rating agencies, investors, SS folks, some stuff with internal M&A. Need MBA/CFA for this job. Figure it makes ~100-200k depending on the size of the company.

Buy-side IR - Works with investors, consultants, do roadshows, calls, know the portfolio and markets. Need MBA/CFA for this. Salary is lets say 50k for low level, and 200-500k for head level depending on size of the company.

I would say buy-side IR is more sales while corporate IR while is more corporate finance