"Additionally, InvestNow was aware of its shortcomings but the company was slow to respond," he said.
"Fast-growing financial services firms must ensure their AML/CFT compliance function grows on par too, otherwise the benefits they bring will be tarnished by the potential for them to be used for illegal purposes - in turn harming New Zealand's reputation."
InvestNow was required to prepare a plan describing how and when it will address shortcomings identified by the FMA, by the end of the month.
As well, the FMA required InvestNow to restrict withdrawals and transfers of financial products from customer accounts that required more information.
The FMA said InvestNow was taking steps to comply with the AML/CFT Act and was not alleging that InvestNow had allowed or enabled money laundering or the financing of terrorism to take place.