UBS reached multilateral agreements with the U.S. Internal Revenue Service (IRS) and U.K. HM Revenue and Customs in 2009 and 2010, respectively.[219] These agreements ensured a line of communication between the tax agencies and all registered Swiss banks.[220] The most commonly used stipulation triggered by select UBS Switzerland AG clients regard the following statute: Swiss banks are only allowed to disclose client information if a client is legally charged with proof of deliberate financial fraud, not merely the non-reporting of assets to avoid taxation.[3]