Is home loan interest tax deductible in South Africa

By Thomas LobbanLLB, LLM (Tax Law), Master Tax Practitioner (SA)Updated 4 August 2026

Bond interest on the home you live in is not tax deductible in South Africa. There is no mortgage-interest deduction for a private residence, and a qualifying home office does not create one either. Interest only becomes deductible when the money it costs you is borrowed to produce taxable income, which in practice means a property you let out. The test is not whether you have a bond; it is what the bond is financing.

That single distinction, private use versus income production, decides the whole question. It is why a homeowner gets nothing and a landlord can claim the interest against the rent.

Why the home you live in gives you nothing

The general deduction rules (sections 11(a) and 23(g)) only allow expenditure incurred in producing income. Interest on the bond over your own home is a private, domestic cost, so it fails that test. Living in the house does not produce taxable income, and the primary residence is not a trade.

This does not change when you run a home office. Even where a salaried employee meets every requirement to claim home office costs, bond interest stays out. SARS puts it plainly: interest on a mortgage bond is claimed under section 24J, and section 23(m) prohibits an employee from claiming a section 24J deduction as part of a home office. Section 23(m) limits an employee's home office claim to the deductions in sections 11(a) and 11(d), and bond interest is not one of them. So the deductible home office costs are things like rates, electricity, cleaning and repairs apportioned to the office, but never the bond interest.

There was a narrow historical exception: up to the 2022 year of assessment (the year ending 28 February 2022), bond interest could be included in a home office claim, apportioned for the office's floor area and time of use. From the 2023 year of assessment (1 March 2022 onward) that fell away. If you are filing for 2026, bond interest on your home is simply not claimable.

When bond interest does become deductible

The moment a loan finances property that earns rent, the interest changes character. Interest on a bond over a property you let out is incurred to produce rental income, so it is deductible against that rental income under section 24J. The other running costs of the let property, such as rates, levies and repairs, are deducted against the rent under the general deduction rules in section 11(a). If the deductions exceed the rent, the loss reduces your other taxable income (subject to the ring-fencing rules that can apply to certain trades).

The key points:

It is the use of the borrowed money that matters, not the property that secures the loan.
Only the portion of the interest attributable to the income-producing property is deductible. If you access your home bond to buy a rental flat, only the interest on the amount actually used for the flat qualifies.
Interest is deductible against the rent, not a rand-for-rand credit against your tax.

A worked example

Take two people, each paying R120,000 a year in bond interest.

Thabo lives in his bonded house and has no rental income. His deductible bond interest is R0. The R120,000 is a private cost, and even his home office claim (if he has one) cannot include it.

Lerato bonds a flat she lets out. The flat brings in R150,000 of rent for the 2026 year. Against that she deducts R120,000 bond interest plus R20,000 of rates, levies and repairs, so her taxable rental income is R150,000 less R140,000, which is R10,000. That R10,000 is added to her other income and taxed at her marginal rate. If her salary puts her in the 31% bracket (taxable income between R370,501 and R512,800), the rental adds R10,000 times 31% = R3,100 of tax. The interest did not reduce her tax directly; it reduced the rental profit that tax is charged on.

Frequently asked questions

Can I deduct my home loan interest from my income tax?

Not for the home you live in. Interest on the bond over your private residence is a domestic expense and is not deductible. It becomes deductible only where the borrowed money produces taxable income, most commonly a property you rent out.

Can I claim bond interest if I have a home office?

No. From the 2023 year of assessment, bond interest cannot be included in a home office claim. SARS treats mortgage interest as a section 24J expense, and section 23(m) blocks an employee from claiming it as part of a home office. You can still claim rates, electricity, cleaning and repairs apportioned to the office, but not the bond interest.

Why can a landlord deduct bond interest but not a homeowner?

Because the deduction depends on producing income. A landlord's bond finances a property that earns rent, so the interest is incurred in producing that income and is deductible against it. A homeowner's bond finances private accommodation, which earns nothing, so there is nothing to deduct it against.

If I use my home bond to buy a rental property, is that interest deductible?

Only the part of the interest that relates to the money actually used for the rental property. You need to be able to trace the borrowed funds to the income-producing use; interest on the portion still financing your own home stays non-deductible.

Does the interest reduce my tax rand for rand?

No. Deductible interest reduces your taxable rental income, and tax is then charged on the lower figure at your marginal rate. It is a deduction from income, not a credit against tax.

Where this fits

The deductible side of bond interest lives in rental tax, so read our guide to tax on rental income and use the rental income calculator to see how interest and other costs net off against the rent. On the private side, our article on whether salaried employees can claim a home office sets out what does qualify, the home office calculator works the apportionment, and repairs versus improvements on a rental property covers another line landlords often get wrong.

SARS sources:

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