In FY 2017-2018, the total income of national parties, from unknown sources, was ₹689.44 cr. 51.38% (₹354.22 cr) of this amount came from voluntary contributions (below ₹20,000).
Association for Democratic Reforms
Out of Rs 689.44 cr as income from unknown sources, a 31% share (₹215 cr.)was from from electoral bonds.