LAS VEGAS — Northern Nevada has long been known as home to the freewheeling counterculture Burning Man festival in the starkly beautiful Black Rock Desert. In the past five years, Las Vegas, too, has evolved into a festival goers’ mecca.

Hundreds of thousands now also flock to the psychedelic Electric Daisy Carnival rave, the iHeartRadio music festival, the Route 91 Harvest country festival and Rock in Rio, an import from Brazil.

But organizers fear new changes to Nevada’s tax law could endanger their festivals’ futures.

Last month, state lawmakers voted to impose a 9 percent tax on admissions to most live entertainment events.

The measure won’t take effect until October, months after this year’s Electric Daisy Carnival wraps up, but general admission passes that cost about $360 now could soon include a fee of about $32.

Burning Man organizers, who have mused about moving elsewhere, argued after the bill’s passage that attendees already support local businesses and pay gas and sales tax.