"Tax activists are convinced the accountants want to maintain the status quo because complex tax-planning work is so lucrative. But accounting changes would bring new lines of revenue. If companies were to adopt country-by-country reporting, for instance, their auditors would have to sign off on more detailed sets of numbers, so their overall income would be unlikely to suffer much. That is why, ultimately, the big four (accounting firms—Deloitte, Ernst & Young, KPMG and PwC) would not lose much sleep over the current tax-avoidance kerfuffle, says another accountant." (Quoted from article)