Arbitrage is the simultaneous purchase and sale of the same asset in different markets in order to profit from a difference in its price. Rental arbitrage is an expert technique where you sublease a property for the sole purpose of Airbnb.This is a risk-free profit. For example, an arbitrage opportunity is present when there is the possibility to instantaneously buy something for a low price and sell it for a higher price. Airbnb rental arbitrage is the act of renting a property longterm and then rerenting it shortterm on vacation rental sites like Airbnb or Vrbo. Airbnb rental arbitrage involves leasing a property longterm and then renting it out shortterm on platforms like Airbnb. Rental Arbitrage is a smart technique to earn money in any type of property including a multifamily house, duplexes, or triplexes.