Zimbabwe has entered hyperinflation for the second time in a decade, according to estimates by Steve Hanke and Erik Bostrom, economists at Johns Hopkins University.

Hanke developed a method of estimating Zimbabwean prices during the last episode of hyperinflation, in 2007/08. The method used a stock traded on exchanges in both Harare and London, which, combined with calculations of purchasing power parity, allowed for an estimate of the implied rate of inflation.

Hanke defines hyperinflation