Does Google Play balance expire? I have a credit on Google Play that is from a gift card and not a promotion. Do I have to use it by a certain date?
From the Google Play Gift Card Terms of Service:


  
  No Fees or Expiration. No fees or expiration dates apply to this Gift Card. Any refunded Google Play amounts, if applicable, will be
  credited back to your Google Play balance for future use under the
  same terms, unless otherwise required by law.
  


This is partially because of laws around gift cards:


  In 2009, Congress passed the Credit Card Accountability Responsibility
  and Disclosure (CARD) Act, which set consumer protections for gift
  cards based on many state laws. The law provides that gift cards
  cannot expire within five years from the date they were activated and
  generally limits inactivity fee on gift cards except in certain
  circumstances, such as if there has been no transaction for at least
  12 months. The federal law creates a floor for regulation and leaves
  room for state regulation on redeeming gift cards for cash and
  unclaimed property provisions.