REVENUE MEMORANDUM CIRCULAR NO. 51-2019 issued on May 6, 2019 informs taxpayers and others concerned that the Union Bank of the Philippines (UBP), an Authorized Agent Bank of the BIR, can now accept electronic/online tax payment through UnionBank Online Web and Mobile applications. Taxpayer who has an account with the said bank can now pay their taxes through the said electronic/online tax payment facilities.