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kshaw(Initiate)Initiate
14 May 2024

We have a property with a home loan on it at $450k. We plan to build a granny flat second dwelling and rent it out (we are living in the main house). Is the interest on the home loan tax deductible from the granny flat rental income? If so, is all the interest deductible or is a portion based on the floor area: (granny flat area)/(house + granny flat area)? I know it is a floor area ratio for CGT if we were to ever sell, but I couldn't find a clear answer for home loan interest when deducting from the yearly rental income for granny flats. Thanks you

2,153 views
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2,153 views
1 replies

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SandraATO(Community Support)Community Support
20 May 2024

HI @kshaw


Yep you work it out similar to CGT - it will be a portion of interest that you are able to claim. We advise that you seek professional help with working this out if unsure.

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Renting Granny Flat and Can I Deduct Home Loan Interest? All or just portion? | ATO Community