Salaries for IROs increase with company size. The median salary range for small and mid-cap IROs is $50,000-$74,999. This increases to $75,000 to $99,999 for large-cap IROs and to $100,000 to $149,999 for those at mega-cap companies. The number of IROs earning at least $100,000 rises with market cap from 28 percent of small-cap IROs to more than three quarters of mega-cap IROs. Although more IROs at larger companies were rewarded with a bonus last year, the proportion of salary they received as a bonus was lower than bonuses received at smaller companies.