While earnings management around IPOs has been researched in a number of settings, there has been a relative absence of work that analyses the impact of the regulatory environment on such activities. We find that the regulatory environment does impact the real and accrual earnings management activities of IPO firms. Our results show that IPO firms listing on the lightly regulated UK Alternative Investment Market (AIM) have higher (lower) levels of accrual‐based and sales‐based (discretionary expenses‐based) earnings management around the IPO than firms listing on the more heavily regulated Main market in the UK.