“…The model estimates a linear regression in which LNFEES is function of a series of determinants of audit fees, which have been tested by previous literature (Gand ıa & Huguet, 2018;Zaman Groff et al, 2017) and control for auditor size, company size (natural logarithm of total assets, natural logarithm of net turnover and natural logarithm of number of employees), company complexity (proportion of inventory and receivables over total assets, acquisitions, proportion of intangibles, reporting of unusual items in the income statement, use of simplified GAAP, number of subsidiaries, and whether the company belongs a group), company risk (leverage, changes in leverage, company growth, profitability, presence of negative earnings, interaction between profitability and negative earnings, current ratio, quick ratio, solvency ratio and changes in the solvency ratio), presence of modified audit reports, year-end date, if the company is located in Madrid or Barcelona, and the age of the company. The model also includes year and industry dummies.…”