You will never get anything resembling a reasonably accurate answer with what you posted.
In the first place, trusts do not "inherit" from other trusts. There may be a transfer from one trust to another due to any number of occurrences, but not an "inheritance".
Without being able to view the terms of the trusts, it is next to impossible to provide any specific advice or draw any conclusions. You should seek guidance from a local tax professional and/or legal counsel.
See https://taxexperts.naea.org/listing/service/estates-gifts-trusts
