Mr Palmer's wife Anna also donated $330,000 to the Nationals party weeks out from the 2019 federal election.

The Australian Electoral Commission published its annual returns on Monday, which reveal who donated what to political parties.

It shows Clive Palmer's United Australia party drew on funding of more than $89.5 million, as part of his ill-fated attempt to return to parliament last year.

The United Australia party received a whopping $83.3 million from his mining company Mineralogy Pty Ltd.

But this massive spend did not translate to electoral success.

He failed to win a single seat and received just $16,080 from the Australian Electoral Commission. Parties receive an automatic payment of around $10,000 from the electoral commission as well as $2.80 per eligible vote.

However Mr Palmer's anti-Labor advertising blitz was credited with helping the Coalition return to power, with a review of Labor's campaign finding he drowned out Bill Shorten's message by outspending them in broadcast print and digital media

But the returns indicate the Palmers played a more direct role in helping with the Coalition's reelection campaign.

His wife Anna gave the Nationals Party a total of $330,000 over six months, including $30,000 on May 8.

However the United Australia party also owed Google $8.2 million, according to the disclosures. It also owed Brisbane printers IPG Marketing Solutions $609,039.

The Liberal Party received the most donations of any political party, bringing in $165 million. Its junior Coalition colleague, the Nationals Party, received $16 million.

Labor received $122 million in donations while the Greens got $14.7 million.

But the data also reveals an enormous concentration of political and economic influence over Australia's electoral system.

UNSW Canberra researcher Dr Lindy Edwards said the pool of donors was incredibly narrow.

"Less than 300 people or organisations have put in donor returns," Dr Edwards said.

"In an economy where the 100 biggest companies on the ASX account for 47 per cent of GDP - we are looking at huge concentrations of economic and political influence."

The largest individual donation was from property investor Isaac Wakil, who gave almost $4.2 million to various branches of the Liberal Party through his company Sugolena Pty Ltd.

The big four accounting firms donated over $1 million dollars to Labor and the Coalition combined.

Deloitte donated $85,308 to the Coalition and $90,471 to Labor. Deloitte had $287.7 million of government contracts in 2018-19.

Price Waterhouse Cooper gave $186,716 to Labor and $199,919 to the Coalition. It had $320.6 million of contracts in 2018-19

Ernst and Young - which had $221.3 million of contracts last financial year - donated $156,662 to Labor and $113,096 to the Coalition.

Meanwhile KPMG - which had a whopping $380.9 million in government contracts in 2018-19 - donated $89,074 to Labor and $100,818 to the Coalition.

Resources companies and lobby groups also donated at least $1.1 million. This includes $97,300 from Adani to the Liberal and National parties; $146,730 from the Minerals Council of Australia largely to the Labor party; and $155,000 from Mineral Resources to both Labor and the Liberals.

An earlier version of this story incorrectly said Deloitte gave $83,458 to the Coalition and $92,321 to Labor.