CRA indicates that an individual can carry forward unclaimed charitable donations

CRA confirmed that an individual can choose not to claim a charitable donation in a particular year and carry forward the claim for up to five years, subject to the s. 118.1 limitations. For example, under s. 118.1(2.1), gifts will be considered to have been claimed in determining an individual's charitable donations tax credits in the order in which they were made (i.e., on a “first-in, first-out” basis).

Neal Armstrong. Summary of 23 January 2024 External T.I. 2023-1000021E5 under s. 118.1(1) - "total charitable gifts" – (c)(i)(A).