Mercer Leading Accounting Firms Survey has over 10,000 incumbent count, with the focus on the Audit and Tax consulting roles. It provides market data from large, medium and small accounting firms, with niche roles in the middle market, covering  and emergence of growing advisory roles. Access to our Mercer WIN tool, an online interactive tool, allows you to slice and dice data, make peer cuts, age data; highlighting firm’s market position, create custom percentile calculations and combine related roles. Firms can stay up to date on the movement of each discipline in the market, how fast the salary moves at certain career levels and in certain locations.