Music certifications prior to 1990 were only awarded by record labels of their artists through their own guidelines until PARI took the obligation. PARI's early policy at that time was that released albums in the country can only be certified Platinum if they were sold at least 40,000 copies, eventually they would receive Diamond award when they reach ten times, at 400,000. This rule was granted until 2006 when PARI changed it down to 30,000 units.[1] It was not until October 2007 that thresholds for albums were distinguished between the local and international repertoire. In local release, PARI made it into 30,000 copies, same that of the previous rule, but parted away from the international release, decreased it into 20,000 copies.[2] In February 2008, PARI again decided to change the guidelines. This time, they made 25,000 copies for local albums and 15,000 for international albums.[3] This latter did not take until December 2009 when PARI decreased five-thousand copies for local albums for a requirement as a Platinum-certified album when they made it to 20,000, while still remained 15,000 for international-released albums, same from the previous one.[4]
Currently, domestic repertoire again shares the same thresholds along with the international repertoire, same that of the 1999—2006/2007 rule. As the album could be one of the best-sellers, new criteria were told that the figure must be published by a reliable or acceptable source and that the album must have sold at least 150,000 units for both domestic and international albums in the country which was already implemented in March 2012.[5] This is why only partial sales figures for international albums such as Fearless, Doo-Wops & Hooligans, All Saints, and The Fame have been included on this list. Mandy Moore's self-titled second album had sold 200,000 copies in the Philippines, making it the second best-selling album in the Philippines by a female foreign singer behind Alanis Morissette's Jagged Little Pill.[6]
Regine Velasquez has sold more than 8.5 million certified albums regionally making her the Philippines' best-selling artist of all time.[7]Nina holds the record for best-selling live album with Nina Live!, which received a Diamond certification.Irish boy band Westlife are the only one of the international acts who had two consecutive released albums featured on the entry.The 2004 greatest hits album of Eraserheads, The Eraserheads Anthology is the best-selling compilation album in the Philippines to date.The late Francis Magalona is the only OPMhip-hop/rapper artist who has a best-selling album in these entries.
Legend
pink
Released before PARI began awarding certifications
^Although Constant Change was released on May 25, 1989, the album had received its certification by PARI on November 10, 1990.
^Two albums of MYMP, Versions and Beyond Acoustics were combined together for certification since they were both released consecutively on a same year.
^"Hay una canción en mi disco" (in Spanish). Epoca: semanario de México. 1997. p. 67. Retrieved June 22, 2020. Su éxito le ha permitido grabar un compacto en la len - gua Tagalo, de Filipinas, con el que ha obtenido tres discos de platino