Paid to click (PTC) is an online business model that draws online traffic from people aiming to earn money from home. PTC websites act as middlemen between advertisers and consumers; the advertiser pays for displaying ads on the PTC website, and a part of this payment goes to the viewer when he views the advertisement.

The PTC model shares some similarities with pay to surf as both of these models use referral marketing as a promotional method. Furthermore, the PTC model is usually combined with a variety of additional ways to earn, such as completing surveys and simple tasks, playing games, shopping, etc. Users can then redeem their earnings for cash through payment processors as well as a variety of gift cards