PORT Macquarie will host the NSW Coastal Conference in November at the Glasshouse.
The event is expected to draw about 300 people to the area.
Councillors agreed to commit $10,000 to underwrite plans for the conference at the Port Macquarie-Hastings Council meeting on Wednesday night.
Development and environment services director Matt Rogers said, while it was a risk the conference would cost the council, it was more likely to generate profit.
Conferences in the past several years have generated a profit for hosts.
"A conference of this type has a multiplier effect that would see around $85,000 injected into the local economy," Mr Rogers said.
Councillor Adam Roberts asked Mr Rogers which fund such a profit would be added to.
The director said a decision would be made when the money was factored into the budget.
The conference has been held annually for 20 years and has grown to become one of the most successful coastal industry events in Australia.
The conference attracts delegates who are interested in or working within the field of coastal and estuary management research, education and service provision and policy.
There also are representatives from government, user groups and community volunteer organisations.
Regional coastal councils in the state take turns to host the event.
Part of the host agreement is that the council underwrites the conference to the value of between $5000 and $10,000.