The gift that your father made to the irrevocable trust should be listed on form 709, Schedule A, Part 1.
Since the gift to yourself and your sister was not a gift of a present interest it doesn't qualify for the annual $13,000. gift tax exclusion.
You'll need the instructions to the 709 in order to complete the return
and figure the gift tax.
The page 1 figure of the 330,000 + - is the tax credit
equivalent of the $1,000,000. amount of lifetime gifts that isn't taxed.
In this format, I can answer questions for you, but I can't actually prepare
the return for you; however, it isn't too difficult except the terms can get confusing; most of it won't apply to you. Parts 2 & 3 aren't applicable, so they can just be left blank. The generation-skipping sections don't apply either.
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