Traders on Wellingborough market are to see their stall prices increase.
From April permanent traders on the market and in Pebble Lane are due to see the cost of having a stall rise by £1 a day.
Casual traders will have to pay £1 or £2 more on certain days to hold a stall.
The cost of having a food and drink van will also rise, from £1,400 a year to £2,000 for small kiosks and trailers and from £1,700 a year to £2,500 for larger ones.
Fruit and vegetable seller Rob Payne said: “It’s still cheap compared to other markets.
“An extra £1 a day you can’t argue with.”
But book seller Tony Mawdsley said: “I hope the council realise that £1 a day might not seem a lot to them, but the point is it’s getting to the point now where traders are going to think ‘is it really worth coming?’.
“Once the traders stop coming, the public will stop coming and the council won’t have any money coming in at all from the market.”
Graham Lawman, chairman of Wellingborough Council’s development committee, said: “Our fees and charges are likely to increase by an average of 4.5 per cent and the market fees have to be part of this.
“We have to balance the books.
“Our fees are still very competitive, we are still getting new traders coming on to the market, and the proposed increase only equates to around a pound extra a day for permanent traders.”
He added: “We do want the market to thrive and we’re investigating ways we can attract more footfall.”