Annual core inflation rate, which excludes energy and unprocessed food products components, is expected to decrease to 0.2 percent from 0.8 percent in March.
On a monthly basis, consumer prices advanced 0.7 percent, easing from a 1.9 percent rise in the prior month, preliminary figures showed.
The harmonized consumer price index is expected to increase 0.3 percent year-on-year (compared to 0.8 percent in March) and 1.0 percent month-over-month (compared to 2.2 percent in March).