A Liberal Party-owned company that bills taxpayers for computer services, Parakeelia, has made its biggest-ever cash transfer to the political organisation, sending it more than $900,000 last financial year.

Parakeelia, which is wholly owned by the Liberals, paid the party more than $715,000 in 2015-16, according to electoral commission disclosures published on Wednesday.

The company also gave the party a $200,000 loan for "cash flow".

Including that loan, an amount equal to nearly 80 per cent of Parakeelia's annual revenue was paid to the Liberals. It has paid the party more than $2 million over five years, money the party discloses as "other receipts" and explains as payments for services.