18. Is there a limit on the amount a donor can contribute to a candidate?

Source: 

Transparency International Sri Lanka, 2025, Review of the Regulation of Election Expenditure Act No.3 of 2023 as per Standards for Integrity in Political Finance,  Transparency International Sri Lanka, Sri Lanka

Donations: The provision is silent about the donation limit, although there are provisions banning donations from certain sources.
 https://www.tisrilanka.org/wp-content/uploads/2025/06/Review-of-the-Regulation-of-Election.pdf

Source: 

Section 5 (1), Regulation of Election Expenditure Act, No. 3 of 2023

5. (1) A recognized political party, an independent group and a candidate at an election conducted under any law specified in section 2, shall not, directly or indirectly accept or receive a donation or contribution whether such donation or contribution is in cash or kind from-
.... promoting or procuring the election of such recognized political party, independent group or candidate at such election.
 https://www.parliament.lk/uploads/acts/gbills/english/6287.pdf 

There is no such limit.