If you use an area of your family home for work, you could claim GST on the home running costs proportionate to the percentage of the home office area to the house.
• Calculate the percentage of the areaWork out the proportion of the area you use for work against the total area of your home. For instance, if you use 10% of your area for your business, your home office expense will be the total running cost of home multiplied by 10%.
• Create home office expenses accountAdd a home office expenses account to your chart of accounts if you have not.
Add a home office expenses account to your chart of accounts if you don’t have one
If you are not GST registered, you only need one account for home office expenses.
If you are GST registered, you need separate two accounts for GST claimable expenses and GST non-claimable expenses.
Expenses you usually can claim are:
Create a manual journal and post it
You need to add a new journal to record home office expenses.
You can find more information at the Tax FAQ “Using family home for work?”