Charities and non-profit organisations in the Bailiwick of Guernsey could face fines if they do not register with the States.
Since 2008 any group based in Guernsey, Herm or Jethou with an income of more than £5,000 a year has had to register.
Now powers to fine charities who do not comply with this register up to £500 have been introduced.
This replaced penalties of criminal prosecution which the States believed were "too heavy-handed".
However, it will remain an option for the Registrar in severe breaches.
More than 400 charities and non-profit organisations have already registered and the regulations are currently being extended to include Sark and Alderney.