Proposed changes to retirement rules in President Obama's 2017 budget could mean tens of millions of new IRA accounts may soon hit the market, though it's unclear if credit unions will get a piece of the action.

According to the proposed budget, all employers with more than 10 workers would have to automatically enroll employees in an IRA if the employer doesn't already offer a retirement plan — a move the White House said would send about 30 million workers into the IRA market. Employers would not be required to contribute to the accounts, and those with 100 or fewer employees would receive a tax credit of up to $4,500. Employees can opt out if they like.

“Approximately half of workers employed by firms with fewer than 50 workers and fewer than one quarter of part-time workers have access to workplace retirement plans,” the proposed budget said. “Workers without access to a plan at work rarely save for retirement: Fewer than 10% of workers without access to a workplace plan contribute to a retirement savings account on their own.”