What does the cryptic crossword clue "Finished exhausted having broken the budget (9)" mean?

The wordplay uses a charade (building blocks). OVER (synonym="”Finished”") + SPENT (synonym="”exhausted”") = OVERSPENT The answer is OVERSPENT.

Finished exhausted having broken the budget (9)

Guardian Cryptic #29457 | 6 Down | 2024-08-09 flower