Radiohead, Katy Perry and Ed Sheeran are among those taking to the stage at this year’s event, but Eavis has said it won’t do much for their bank balances.
She told BBC 6 Music’s Matt Everitt that acts earn “less than 10%” of what they could make at other festivals.
“We’re not in a situation where we’re able to just give people enormous amounts of money,” she explained.
“So we’re really grateful for the bands that we get, because they’re basically doing it for the love of it.”
Founder Michael Eavis had, for context, peviously revealed that £200,000 was once paid to Coldplay.
“Although it sounds a lot, they could have charged me far more,” he said at the time.
Oasis, for example, were believed to be paid upwards of £1m when they topped the bill at Reading and Leeds in 2000.
Oxfam, WaterAid and Greenpeace are among the charities who benefit from the money Glastonbury makes, rather than the musicians who take part.
“We try to give £2m a year,” Emily Eavis added. “In a wet year it’s harder because it costs more, but we give as close to £2m as we can.
“That’s why we’re not commercial, in that respect. We’re not in the same bracket as everyone else when it comes to paying artists massive fees.”
Glastonbury Festival takes place from June 21-25, 2017.