Tougher penalties for 18 fire-related offences come into force on Friday.
The fines for littering involving cigarettes and matches have doubled to $660 and to $1320 when littering on a day of a total fire ban.
Fine increases will also target land owners who conduct unlawful hazard reduction burns or fail to extinguish any type of fire.
The RFS will work closely with NSW Police to ensure the new laws are implemented.
RFS Commissioner Shane Fitzsimmons said the new laws and increased fines have come ahead of what could be a challenging season.
“Across the north of the State we have already seen windy and dry conditions leading to difficult fires,” Commissioner Fitzsimmons said.
“Residents should continue to make vital preparations for the upcoming bushfire season including hazard reduction burns where appropriate. “These activities just need to be conducted responsibly.”