If you live with a disability, or you care for a spouse or child who does, you may be missing a bigger tax credit than you realise. The system rewards the kind of detailed, ongoing, multi-provider spending that disability and chronic care involve. Not many people know that.
This isn't limited to a narrow list of conditions. If SARS's definition of disability applies to you, your spouse, or a dependant, the credit works differently, and more generously, than it does for other taxpayers. This article explains how it works, and why so many people who qualify never claim it.
What is the ITR-DD form?
To claim the disability-linked medical tax credit, SARS needs confirmation that the disability meets its definition. That confirmation comes from the ITR-DD form. A registered medical practitioner qualified to assess the impairment completes and signs it, a physician, psychiatrist, or occupational therapist, depending on the disability.
A few practical points worth knowing:
- The ITR-DD is more than a doctor's note. It asks the practitioner to confirm the degree and duration of the impairment against SARS's criteria.
- Depending on whether the disability is permanent, SARS may ask you to renew the form periodically. It isn't always a once-off.
- You don't submit the form with every year's return. Keep a valid one on file, ready to show SARS if asked. Treat it as a permanent part of your tax records, alongside your receipts.
Once that confirmation is in place, for you, your spouse, or a dependant, the whole calculation for the Additional Medical Expenses Tax Credit (AMTC) shifts in your favour.
How the credit formula changes
Most taxpayers under 65, without a qualifying disability, work out their AMTC like this:
25% × [ (annual medical scheme contributions − 4 × annual medical scheme fees tax credit) + other qualifying out-of-pocket expenses − 7.5% of taxable income ]
That last part, 7.5% of taxable income, is a hurdle. Your out-of-pocket medical spend has to clear that bar before any of it counts towards a credit. For someone on a decent income with moderate medical costs, the hurdle can swallow the whole claim.
If you, your spouse, or a dependant has a SARS-confirmed disability, or you're 65 or older, the formula changes to this:
33.3% × [ (annual medical scheme contributions − 3 × annual medical scheme fees tax credit) + other qualifying out-of-pocket expenses ]
Two things happen here, and both work in your favour:
- No income threshold. Every rand of qualifying out-of-pocket spend counts from the first rand. There's no 7.5%-of-income floor to clear first.
- A higher rate. You're crediting 33.3% of the qualifying amount, not 25%.
This is why disability status matters for your finances too. It changes which rand of spending starts earning credit, and how much each rand is worth.
A worked example
Take a taxpayer whose spouse has a SARS-confirmed disability. They belong to a medical scheme together, as main member plus one dependant, paying R60,000 in annual contributions. Over the year, they also pay R45,000 out of pocket, for things like specialist visits, physiotherapy, and assistive equipment the scheme didn't cover.
Step 1: Work out the annual medical scheme fees tax credit (MTC). Main member (R364/month) + one dependant (R364/month) = R728/month × 12 = R8,736/year.
Step 2: Apply the disability-branch AMTC formula.
33.3% × [ (R60,000 − 3 × R8,736) + R45,000 ]
= 33.3% × [ (R60,000 − R26,208) + R45,000 ]
= 33.3% × [ R33,792 + R45,000 ]
= 33.3% × R78,792
≈ R26,238
Now compare that with what the same household would get under the standard formula for someone under 65 without a disability, assuming taxable income of R450,000 (7.5% of that is R33,750):
25% × [ (R60,000 − 4 × R8,736) + R45,000 − R33,750 ]
= 25% × [ R25,056 + R45,000 − R33,750 ]
= 25% × R36,306
≈ R9,077
Same contributions, same out-of-pocket spend. The disability-branch calculation produces close to three times the credit. That gap is why it matters to confirm disability status with an ITR-DD, instead of filing under the default formula out of habit or uncertainty.
Why does this credit go unclaimed?
There are practical reasons these claims tend to be incomplete. None of them are the taxpayer's fault:
- Spend is scattered across many providers. A single year of care might touch a GP, a specialist or two, a physiotherapist, an occupational therapist, a psychologist, a pharmacy, and an equipment supplier. Each invoices differently, and none of it sits in one place.
- Assistive equipment and home modifications get overlooked. Wheelchairs, hearing aids, mobility aids, and some home-nursing costs qualify. They don't always look like a typical medical expense when you're going through a stack of receipts.
- The paperwork feels personal. Many people don't want to relive a difficult year just to satisfy a tax claim. So the receipts get filed away and never looked at again.
- The ITR-DD process isn't well known. Many taxpayers don't realise the form exists. Some assume a disability grant or an old diagnosis is enough on its own. It isn't.
None of this is a personal failing. It's down to how much manual reconciliation the current system demands. Our breakdown of Codes 4005, 4020 and 4034 explains why the out-of-pocket portion tends to be the most incomplete number on anyone's return, disability or not. It's the one figure that isn't handed to you on a single certificate.
What qualifies?
Qualifying expenses for the disability-linked credit include the usual categories: GP, specialist, dentist and optometrist fees, prescribed medicines, hospital and theatre costs, and home nursing. Where the disability is SARS-confirmed, certain extra disability-related costs and equipment also qualify. Over-the-counter products and items without a prescription generally still fall outside the claim.
If you're not sure what to gather before you start, our document checklist walks through what to collect: receipts and invoices, your medical scheme's tax certificate and claims extract, a year of bank and credit-card statements, and, where relevant, proof of the dependency relationship.
How SecureSlip can help
This is the kind of reconciliation SecureSlip was built for. You send a year's documents: receipts, invoices, medical scheme certificates, and bank and credit-card statements. Private, on-device AI sorts them. It classifies each document, extracts the figures, and matches payments to your scheme's own certificate to work out what's new versus what's already covered. Anything uncertain gets flagged for a human reviewer before it's finalised. The AI never totals anything itself; every figure is checked against deterministic arithmetic first. What you get is a numbered, submission-ready pack you or your tax practitioner can file.
You can get a free, no-obligation idea of what your own figures might look like with the calculator, or read about the process at how it works.
This article is general information. It isn't tax advice. The rebate amounts referenced are for the 2024/2025 tax year, and SARS reviews these figures annually. Confirm the current year's amounts, and your own eligibility for the disability-linked credit, with SARS or a registered tax practitioner.
If you'd like help gathering and reconciling a year of medical documents into a submission-ready claim, try the free estimator at /calculator, read more at /how-it-works, or get in touch.