The figure was 0.1 percentage point higher than a flash estimate released by the state-run Statistics Poland (GUS) agency at the end of last month.
In March, the prices of consumer goods and services in Poland were 4.9 percent higher than in the same month a year earlier, according to Statistics Poland.
In January and February, Poland's consumer price index also stood at 4.9 percent, Statistics Poland reported.
The statistics office said earlier this year it had revised its system of weights used for calculating the consumer price index in 2025.
Polish inflation is projected to average 3.8 percent next year, followed by 3 percent in 2027, 2.8 percent in 2028 and 2.5 percent in 2029, according to a set of macroeconomic targets adopted by the government in late April.
The Polish central bank predicted in its latest Inflation Report, released on March 14, that inflation would average at 4.9 percent in 2025, followed by 3.4 percent in 2026 and 2.5 percent in 2027.
(gs)
Source: IAR, PAP