And while officials said they're on track to gradually raise short-term rates this year, they gave no indication about when they will start.
The only notable change in the new policy statement from the Fed was that it noted growing consumer and business sentiment "of late", perhaps an acknowledgment of the growing private sector optimism after Republicans took control of Washington. It has indicated that three increases are likely this year as it pushes interest levels back to a more normal level.
At the moment, most economists foresee no rate increase even at the Fed's next meeting in March, especially given the unknowns about how President Donald Trump's ambitious agenda will fare or whether his drive to cancel or rewrite trade deals will slow the economy or unsettle investors. Previously, inflation was "expected to rise to 2% over the medium term"; now, "inflation will rise". The Fed's announcement on interest rates is expected at 2 p.m. EST.
Ms Yellen gets a chance to send a signal to markets about the possibility of raising rates when she testifies to Congress on February 15.
The Fed now has two governor vacancies, potentially three more in the pipeline and the central bank's Chair, Janet Yellen, is due to step down in February 2018. For months past year, it was a primary factor in the committee leaving rates unchanged.
United States serviceman killed in raid on al Qaeda base in Yemen
The raid marked the first known counterterrorism operation and first confirmed combat fatality under President Trump. Unnamed Yemeni security officials were quoted as saying troops were brought in by aircraft in al-Baida province.
The businessman-turned-politician has offered few specifics on his economic plans or a timeline for their rollout, while the announcement of policies viewed by many as protectionist and an immigration crackdown have caused market jitters in recent days.
Even though economic growth, as measured by the gross domestic product, was underwhelming past year, the job market appears close to full health.
And inflation, by the Fed's preferred measure, rose 1.6 per cent in the 12 months that ended in December, moving closer to the Fed's 2 per cent goal.
Manufacturing has been expanding despite a strong USA dollar, which makes American products more expensive in overseas markets.