Wiktionary
paid up
1 (context often hyphenated English) fully paid. 2 {{context|idiomatic|often|hyphenated|sometimes preceded by (term fully English)|lang=en}} full-fledged, wholehearted. v
(en-pastpay up)
Usage examples of "paid up".
Like a man on the verge of a critical illness or a hazardous journey, I cleared up my correspondence, paid bills until I had writer's cramp from signing checks, read over my will, and paid up my life insurance, made to the benefit of an elderly sister of my mother's.
I suppose you won't believe me, but I had never done that kind of thing before, and I - well, I have paid up, I think.
I paid up and snuggled down amongst cargo and sails and closed my eyes.