Half of the largest public companies reported their external audit costs to comply with Sarbanes-Oxley rose again in 2017, driven largely by persistent audit regulatory pressure, increased merger and acquisition activity, and adoption of new accounting standards.

Thatโ€™s the finding of the latest annual Protiviti survey exploring Sarbanes-Oxley compliance activity and costs. Based on a poll in early 2018 of more than 1,000 finance and internal audit executives at public companies, 50 percent of large accelerated filers saw their SOX-related external costs rise last year, while 44 percent said costs held steady; only 6 percent reported a decrease in costs.