People donating to causes on Givealittle will have the opportunity to cover the newly introduced 5 per cent fee.
The Spark Foundation announced yesterday a 5 per cent levy on donations will be introduced from September 1 to cover Givealittle's growing costs.
Spark Foundation general manager Lynne Le Gros told Newstalk ZB's Mike Hosking Breakfast that the fee won't cover the full cost of maintaining the platform.
"When we first bought [Givealittle] it was doing just over half a million dollars a year and now we're doing more than that a month," she said.
"We want Givealittle to continue running into the future."