In Kind Direct has set a lower registration fee for all charities after getting a £150,000 grant from the Esmee Fairbairn Foundation.
The new rate is for all charities not otherwise eligible for subsidised registration fees.
"We want to make our service accessible to many more charities of every size and focus," said Robin Boles, chief executive of In Kind Direct.
"We know that the income-linked annual registration has been a barrier to some charities."
The charity takes unwanted goods and equipment from companies and distributes them to other charities.
The grant also means that the first 75 charities to join in 2006 will receive £100 vouchers, exchangeable for discounted goods from In Kind Direct's catalogue.