The Financial Services Authority has restructured and re-designed its website with the aim of helping authorised firms cut the time they spend on regulation.
The City watchdog says that improved navigation and an intuitive search facility will make it quicker and easier for users to find the information they need.
Firms should also find it simpler to use the site to provide information to the FSA, reducing paperwork and meaning less time spent on regulatory reporting.
Completion of the project meets the first milestone in the FSA's Business Plan for 2005-2006, under the aim of improving business capability and effectiveness.
David Kenmir, the FSA's managing director of regulatory services, said: "We want to make it easier for firms and consumers to help themselves and to reduce the time and effort which firms, especially small firms, need to spend dealing with us.
"On average the website gets 26,000 visits a day. It is a crucial tool for firms and we have put significant resource behind listening and responding to feedback."
Both firms and trade associations contributed to the development of the new site.