Political donations to the major political parties slumped in 2014-15, with the Liberal Party recording a $50 million drop on the previous year.

Overall financial receipts totalled about $179 million during the financial year, a $100 million drop on the previous year, according to the Australian Electoral Commission's latest annual financial disclosure returns.

Released on Monday, the returns show the Liberals attracted the most money, with receipts of $75 million.