The Public Housing Agency (PHA) establishes a Payment Standard schedule that sets payment standard amounts for each Fair Market Rate (FMR) area within the PHA's jurisdiction. 

HUD is required by law to set income limits that determine the eligibility of applicants for HUD's assisted housing programs, including the housing choice voucher program.  The income limits are published annually and are based on HUD estimates of median family income in a particular area or county -- with adjustments for family size.

Tarrant County Housing Assistance Office (TCHAO) determines the appropriate number of bedrooms under the TCHAO subsidy standards and enters the family unit size on the voucher that is issued to the family.  TCHAO will allocate one bedroom for each two persons within the household with exception to its established subsidy standards if the PHA determines that the exception is justified by the age, sex, health, handicap or relationship of family members or other personal circumstances.