The freshly inked Trans-Pacific Partnership (TPP) – the biggest trade pact in two decades encompassing 40 percent of the world economy – may be hailed as transformational, but it will take many years before the economic benefits are actually felt, say analysts.

After five years of talks, a dozen countries across the Pacific Basin - Australia, Brunei, Canada, Chile, Japan, Malaysia, Mexico, New Zealand, Peru, Singapore, Vietnam – on Monday clinched a landmark free-trade agreement that will reportedly reduce or eliminate tariffs on almost 18,000 categories of goods.