Frank Brennan (15 December 1947 – 1 September 2015) was an Irish author.
Throughout his lifetime, Brennan earned himself a reputation as being "the widely respected economist and tax consultant who designed the blueprint for tackling Ireland's black economy in the early 1990s."
He did this through his well-researched paper that explained how to harness black money "to kick-start an otherwise stagnant economy.
"[1] He also coauthored the Tax Commentary for many years.