Several major Boston nonprofit groups provide low-interest loans as a perk to their top executives, the Boston Herald reports.

The heads of the Dana Farber Cancer Institute, the Boston Symphony Orchestra, and the Combined Jewish Philanthropies have outstanding mortgage loans worth hundreds of thousands of dollars from the organizations. Collectively the three executives received salary and benefits of nearly $2-million last year. Other charities have signed lucrative contracts with private consulting firms run by their CEO’s.

About a dozen Boston-area nonprofit groups paid their top executives $300,000 to $600,000 last year, the paper also reports.