In total, Harrison will receive £23,065 for his work on chronometers.

He has received £4,315 in increments from the Board of Longitude for his work, £10,000 as an interim payment for H4 in 1765 and £8,750 from Parliament in 1773.

This gives him a reasonable income for most of his life (equivalent to roughly £45,000 per year in 2007, though all his costs, such as materials and subcontracting work to other horologists, had had to come out of this).

He becomes the equivalent of a multimillionaire (in today's terms) in the final decade of his life.