The Scouts must raise £50 million during the next five years to finance two international jamborees to mark its centenary.
Scouting 2007, a separate charity and a wholly owned subsidiary of the Scout Association, will raise funds for the two events.
More than 40,000 scouts from around the world will travel to the UK to attend the 21st World Scout Jamboree, which will be held at Hylands Park in Chelmsford in August 2007. A ten-day European Scout Jamboree is also planned for 15,000 members in 2005.
Scouting 2007 estimates that £25 million will be raised via its members from entrance fees and money procured from sales of official merchandise.
A projected 10,000 day-guests are also expected to generate extra revenue.
A further £25 million will be sourced through sponsorship and fundraising activities.
"Fundraising is just begging really and we'll be looking for funds from other charities, ex-scouts, rich people and companies around the world,
said Richard Greenwood, managing director at the Scout Association.
Potential sponsorship packages will incorporate inclusion in event brochures, branded banners and event badges.
Other possible opportunities include inviting supermarkets to build and sponsor a food store for the site to accommodate the thousands of guests.
The jamborees will include an integrated education programme and traditional scouting activities such as camping and outdoor activities.
There will also be a programme of activity throughout 2007 for the 500,000 scouts in the UK.
The organisation is looking for a commercial manager to handle sponsorship, tracking and fundraising activities.
A jamboree manager will also be recruited to organise the logistics of the two events and to head a Jamboree Planning Team.