Largest Banknote: PHP100,000

On time.com you can find an article "Top 10 things You Din't Know Money" First on that list is the 'Largest Banknote, size-wise, is the 100,000-peso issued by the government of the Philippines in 1998 to celebrate a century of independence from Spanish rule. 

The note was offered only to collectors, who could purchase one of the limited-edition notes for 180,000 pesos.