Who will be benefited by deflation?

Consumers will benefit from deflation in the short term, because the prices of goods will reduce. This not only increases the purchasing power of the consumers but also helps the consumers to save more. You can read about the Inflation in Economy- Types of Inflation, Inflation Remedies [UPSC Notes] in the given link.

Further readings:

1. Inflation Targeting: Methods, Drawbacks and Benefits
2. Indian Economy Notes For UPSC Exam [Download PDFs]