Matching funds/ 'match funding'

In October 2011, the Bletchley Park Trust received a £4.6m Heritage Lottery Fund grant to be used "to complete the restoration of the site, and to tell its story to the highest modern standards.", on the condition that £1.7m of 'match funding' is raised by the Bletchley Park Trust.^[104][105] Just weeks later Google contributed £550k^[106] and by June 2012 the trust had successfully raised £2.4m to unlock the grants to restore Huts 3 and 6, as well as develop its exhibition centre in Block C.^[107]

Matching funds are funds that are set to be paid in equal amount to fundsavailable from other sources. Matching fund payments usually arise in situations of charity or public good.

Matching funds - Wikipedia, the free encyclopedia

https://en.wikipedia.org/wiki/Matching_funds