German airline Lufthansa has offered a lump sum of 25,000 euros ($A36,595.18) in compensation for each victim of the March 24 crash in the French Alps.
Lawyers representing the families of the victims said the offer was in addition to the emergency assistance of 50,000 euros per victim the company had already paid out to surviving family members.
Lawyer Christof Wellens, who represents 15 families with more than 60 relatives in total, said the figure was not enough. "I find it hard to believe that a single one of the families will accept that," he told dpa.
Germanwings, a subsidiary of Lufthansa, was expected to make a statement about compensation for the victims later on Tuesday.
French and German prosecutors have said that co-pilot Andreas Lubitz intentionally crashed Germanwings flight 4U 9525, killing all 150 people on board, most likely amid issues with depression and worries about his health.
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Prosecutors have so far not suggested that either airline faces charges in the crash.
In March, a Lufthansa spokesman said an insurance consortium had set aside $US300 million ($A390.62 million) to meet claims connected to the Germanwings crash.
The sum is to cover compensation claims by the families of the 150, the loss of the Airbus A320 and associated personnel costs, the spokesman said.
