NEW YORK – It’s moving day for bank customers.

A grass-roots movement that sprang to life last month is urging bank customers to close their accounts today in favor of credit unions.

The spirit behind “Bank Transfer Day” caught fire with the Occupy Wall Street protests around the country and had more than 79,000 supporters on its Facebook page as of Friday. The movement has already helped beat back Bank of America’s plan to start charging a $5 monthly debit card fee.

It’s not clear to what extent the banking industry’s about-face on debit card fees will extinguish the anger driving the movement. But many supporters say their actions are about far more than any single complaint.

“It’s too little, too late,” said Kristen Christian, the 27-year-old Los Angeles small-business owner who started “Bank Transfer Day.” She opened accounts at two credit unions in preparation for cutting ties with Bank of America this weekend.

“Consumers are waking up and seeing that they have options,” she said.

Even with its public support, however, it’s not likely that the account closings will make a big dent with industry titans such as Chase, the largest bank in the country with about 26.5 million checking accounts.

But the call to action shows just how incensed consumers were at the prospect of a debit card fee at a time of so much economic uncertainty. Even those who were appeased by the industry’s reversal may have tapped into a new sense of empowerment.

That’s the case for Dan Blakemore, a Bank of America customer for the past 10 years. He said he no longer plans to close his checking account now that the debit fee has been scrapped. But he’ll be on the lookout for any other changes that might hit his wallet.

“I’m pretty confident they’re going to find some way to get that extra money,” said Blakemore, 28, who works for a nonprofit fundraiser in New York City. “I’ll just have to see if it offends my sensibility enough to close the account.”

Navy Federal Credit Union, the largest credit union in the country, says new account openings in September and October were up 38 percent from a year ago. National Capital Bank, a two-branch community bank in Washington, D.C., says the vast majority of its new account openings in recent weeks have been by fed-up Bank of America customers.

“The debit fee was definitely a driver,” said Noah Wilcox, president of Grand Rapids State Bank in Minnesota, which is also enjoying a lift in account openings.

Because credit unions and community banks vary so greatly in size, however, it’s hard to gauge the total scope of the defections they’re reporting. For example, the Lower East Side People’s Federal Credit Union in New York City says it’s enjoying more than 55 new account openings a week. That’s a big jump from its average of about 10 new accounts per week, but insignificant when weighed against the portfolios of the nation’s largest banks.

Big banks have also learned that customer grumblings don’t always translate into action. That’s particularly true for those who have multiple accounts, direct deposit and automatic bill paying; many decide that switching just isn’t worth the hassle.