grand total; final total; overall sum
Refers to the total amount after everything has been added up, often used in financial or accounting contexts.
I calculate the grand total of this month's expenses.
Compound of 総 (そう, 'overall') and 締め (しめ, from 締める 'to tighten, to sum up'). The exact historical derivation is uncertain, but the term is conventionally associated with totaling or finalizing amounts.