If i sell a house that i put in a family trust for 20 years…

Good Morning

If it was purchased after 20 September 1985 it will attract CGT.

You need to look at the Trust Deed and speak to your accountant about possibly transferring to yourself as a beneficiary and then ask if you then onsell with it being your Principal place of residence will CGT still apply.

But selling it from the trust will have the trust pay CGT

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Leon

Here is the link from the ATO that give you more detail

Disposal of a trust asset (or another capital gains tax event) is likely to result in a capital gain or loss for the trust (unless a beneficiary is absolutely entitled to the asset).

Capital gains and losses are taken into account in working out the trust's net capital gain or net capital loss for an income year:

• A net capital gain is included in the trust's net income.
• A net capital loss is carried forward and offset against the trust's future capital gains.

As part of the net income of a trust, the net capital gain for the year is then allocated proportionately to beneficiaries based on their entitlements to trust income – unless:

• there is a beneficiary that is specifically entitled to the capital gain, or
• the trustee (of a resident trust) chooses to be taxed on a capital gain.

​https://www.ato.gov.au/General/Trusts/Trust-capital-gains-and-losses/