The figure was 0.1 percentage point higher than a flash estimate released by the state-run statistics agency at the end of last month.
In March, the prices of consumer goods and services in Poland were 11 percent higher than in the same month a year earlier, according to the Central Statistical Office.
In February, Poland's consumer price index stood at 8.5 percent, the statistics agency has said.
The Polish central bank’s Monetary Policy Council this month raised key interest rates for the eighth consecutive time in a bid to tame inflation.
(gs)
Source: PAP