Abstract: | Portuguese governmental accounting has evolved from essentially a cash‐based budgetary accounting system to an accrual‐based financial and cost accounting system. Evidence from financial reports shows a great level of diversity amongst municipalities' voluntary compliance with the new accounting rules. Using a sample of Portuguese municipalities in the year 2003 we calculate and analyse the levels of compliance with the practices required by law and document the diversity in compliance across municipalities. The differences across municipalities are explained by some fundamental factors: size, financial conditions, urban characteristics, and diffusion across neighbouring municipalities. We show an unexpected effect of size. Larger municipalities comply less with accounting standards. Organizational complexity, conservative practices, and aversion to change may explain this result. Copyright © 2007 ASAC. Published by John Wiley & Sons, Ltd. |