(This article has been updated in light of the Union government's recent clarification that UPI transactions above Rs 2,000 will attract a merchant fee of 0.4 percent starting 15 October. It was first published on 8 August 2026.)
Imagine three highways. In the first, anyone can move freely without paying anything because it is funded by the government through taxpayer money. In the second, motorists pay a toll to pass through to recover the cost of building the highway. The third is one that passes from one country to the other, like the road that passes at the Attari-Wagah border, where immigration and customs officials stop passengers at designated check-posts.
Knowing these differences helps as one navigates the controversy over the government reportedly levying charges to recover the costs for UPI payments.
You can picture the UPI infrastructure like a set of financial highways linked by a clover-leaf interchange (or flyovers) enabled with checkpoints that enable safe, legal, certified transactions.

