WASHINGTON — Robust economic growth has increased the confidence of Federal Reserve officials that the economy is ready for higher interest rates, according to an official account of the central bank’s most recent policymaking meeting in late January.

The Fed did not raise its benchmark interest rate at the meeting on Jan. 30 and 31, but the account reinforced investor expectations the Fed would raise rates at its next meeting in March.

The account said Fed officials have upgraded their economic outlooks since the beginning of the year and listed three main reasons: The strength of recent economic data, accommodative financial conditions and the expected impact of the $1.5 trillion tax cut that took effect in January.

“The effects of recently enacted tax changes — while still uncertain — might be somewhat larger in the near term than previously thought,” said the meeting account, which the Fed published Wednesday after a standard three-week delay.