The document discusses the Supreme Court ruling in the Mandanas case and its implications. It finds that:
1) The Supreme Court ruled that local government units' just share of national taxes is not limited to taxes collected by the BIR, but also includes customs duties collected by the BOC.
2) This increased the projected 2022 IRA (Internal Revenue Allotment) of LGUs to PHP1.083 trillion, 27.61% or PHP234.39 billion more than prior to the ruling.
3) Sample LGUs would see IRA share increases ranging from 27.61% to 814 million for a first class province to 27.61% and 394 million for a first class