What does the cryptic crossword clue "Amount I tip seen as suspect? That's a malign claim (10)" mean?

The wordplay uses an anagram. anagram of AMOUNT + I + TIP = IMPUTATION The answer is IMPUTATION.

Amount I tip seen as suspect? That's a malign claim (10)

Daily Mail Cryptic #17062 | 2 Down | 2023-03-27 flower