Find your yearly professional tax amount.
Your state's monthly rate is applied and capped at the national ₹2,500 annual limit.
Annual PT: min(Monthly rate × 12, ₹2,500)
Why does professional tax vary by state?
It is charged by state governments, not the central government. So both the rate, and whether it is charged at all, are different in each state — some states do not charge it at all.