You do not get a paycheck since surrogacy is not a job, but you are compensated for the time and effort during the process. The compensation amount can vary from contract to contract. This is a private agreement between the Intended Parents and their carrier. The agreed-upon compensation is not guaranteed since the achievement of pregnancy is never guaranteed, but once you are pregnant, monthly installments are paid over the course of the pregnancy. There could be many factors such as unsuccessful embryo transfers or miscarriage that could cause compensation to never start or even halt.