ATO interest charges are no longer tax deductible – What you can do As we explained in our Practice Update for September, general interest charge ( GIC ) and shortfall interest charge ( SIC ) imposed by the ATO is no longer tax-deductible from 1 July 2025. This applies regardless of whether the underlying tax debt relates to past or future income years. With GIC currently at 11.17%, this is now one of the most expensive forms of finance in the market — and unlike in the past, you won’t get a deduction to offset the cost. For many taxpayers, this makes relying on an ATO payment plan a costly strategy. Refinancing ATO debt Businesses can sometimes refinance tax debts with a bank or other lender. Unlike GIC and SIC amounts, interest on these loans might be deductible for tax purposes, provided the borrowing is connected to business activities. While tax debts will sometimes relate to income tax or CGT liabilities, remember that interest could also be deductible where money is borrowed to pay other tax debts relating to a business, such as: GST; PAYG instalments; PAYG withholding for employees; and FBT. However, before taking any action to refinance ATO debt it is important to carefully consider whether you will be able to deduct the interest expenses or not. Individuals If you are an individual with a tax debt, the treatment of interest expenses incurred on a loan used to pay that tax debt really depends on the extent to which the tax debt arose from a business activity: Sole traders: If you are genuinely carrying on a business, interest on borrowings used to pay tax debts from that business is generally deductible. Employees or investors: If your tax debt relates to salary, wages, rental income, dividends, or other investment income, the interest is not deductible. Refinancing may still reduce overall interest costs depending on the interest rate on the new loan, but it won’t generate a tax deduction.