<h1>Nidhi Companies must use Form NDH-4 for status updates as per Companies Act amendments effective August 15, 2019.</h1> Nidhi Companies must apply to the Central Government for status updates or declarations as Nidhi Companies using Form NDH-4, following amendments to the Companies Act and Nidhi Amendment Rules 2019, effective from August 15, 2019. Companies incorporated before this date must apply within one year of incorporation or nine months after the amendment, whichever is later. Those incorporated after must apply within 60 days of one year from incorporation or an extended period. Non-compliance restricts filing certain forms and incurs fines. Investors should verify a company's status before investing. Nidhi Companies promote savings and mutual benefit among members.