This guideline project was supported by funds bequeathed to the University of Western Australia by Dr Athelstan John Henton Saw OBE MLC. This grant enabled the development, evidence synthesis, initial drafting of the guideline, and stakeholder engagement necessary for its completion. This "Development of national clinical guidelines to reduce overuse of medications by older people" grant of $40,000 was awarded to Professor Christopher Etherton-Beer and Associate Professor Amy Page in 2019. This funding supported employing research assistants (Dr Ria Hopkins, Dr Nashwa Masnoon, Mia Percival, Evelyn Dimopoulos) for evidence synthesis and recommendation formulation in the early stage of the project.

Further funding for this project was supported by a component of the $100,000 Western Australian Future Health Research and Innovation Fund/Western Australian Department of Health grant "Enhancing medicine use for frail older people to improve well-being" (Grant ID WANMA/EL2023-24/5) awarded to Associate Professor Amy Page in 2024. This funding supported employing a general practitioner (Dr Xisco Reus) to assist with the guideline development, a post-doctoral researcher (Dr Hend Almutairi) to assist with the second-person GRADE assessment, consumer engagement (Consumer and Community Involvement Program at the Western Australia Health Translation Network), International Standard Book Numbers, publication fees, graphic design, and dissemination of the guidelines.

The lead author and PhD candidate (Hui Wen Quek) received an Australian Government Research Training Program (RTP) Scholarship at The University of Western Australia. This scholarship has provided financial assistance for her PhD research activities, contributing to the development of this guideline. Individual members of the guideline development group did not receive specific funding for their contributions to this project.

All funders had no role in the formulation of recommendations, data interpretation, or the final content of this guideline. All decisions were made independently by the guideline development group in accordance with best practices for evidence-based guideline development.