Parramatta are on a collision course with their major sponsor after Dyldam allegedly fell more than half a million dollars in arrears in its scheduled payments.

The Eels and Dyldam are likely to part company at the end of the season regardless of whether the property development and construction group meets a payment plan outlined by the club.

Dyldam and the Eels have fallen out over sponsorship payments. Credit:Photo: Jessica Hromas

Dyldam has been a corporate supporter of the Eels since 1998, with the company taking up the jersey sleeve sponsorship five years ago. They have enjoyed naming rights honours and the pride of place on the Eels jersey in recent years, but officials have become frustrated by their inability to meet their financial obligations in a timely fashion.

A source close to the matter said: "They always pay, but they're always late."