Comic Relief is offering charities free use of Gift Aid software it has developed to work with HM Revenue & Customs’ new online filing system.
HMRC introduced Charities Online in April and charities are now required to submit claims using the system or use a new paper form.
Comic Relief said its HMRC-accredited Gift Aid Interface Link software is now available to the sector.
The software links directly with Charities Online, the poverty relief charity said.
Comic Relief said it was being made available on an "open-source" basis because some charities were unable to meet the start date for the new system.
Colin Simon, the charity’s business director, said: "Comic Relief is a strong supporter of anything that makes claiming Gift Aid easier and more automated.
"Having developed this tool for our own use, and knowing it has the flexibility to work with other systems, we are pleased to share it with the wider sector."
Charlotte Ravenscroft, head of policy and research at the National Council for Voluntary Organisations, said she hoped it would help some of the charities that were still searching for an appropriate software solution.
In April, Leukaemia & Lymphoma Research offered other charities the free use of technology it had developed to make its donor database ready for the new online Gift Aid system.
Last month it emerged that seven of the UK’s largest fundraising charities, including the disability charity Scope, had told HM Revenue & Customs that their IT systems might not be ready to claim Gift Aid under the new system.