Reviewed by: MyTaxRebate Team on 5 Mar 2026 | Authority: s.469 TCA 1997
Quick Answer
People with diabetes who purchase specialist diabetic food products can claim 20% income tax relief on those costs in Ireland, where the products are purchased on the advice of a doctor. A letter from your GP or specialist confirming your diabetes diagnosis is required as supporting documentation. This is the same provision that applies to coeliac patients claiming gluten-free food expenses.
If you have a diabetes diagnosis and have been purchasing specialist diabetic products without claiming, MyTaxRebate reviews your qualifying costs across all available years and submits the full backdated claim - at no upfront cost.
What This Page Covers
- ✓How diabetic food expenses qualify under s.10.2 of Revenue's guidance
- ✓The GP or specialist confirmation letter: what it must say
- ✓Which specialist diabetic food products qualify - and which do not
- ✓Glucometers, CGMs, insulin pumps, and test strips as medical appliances
- ✓Insulin and prescribed diabetes medicines as separate health expenses
- ✓Practical record-keeping and calculating the annual qualifying amount
Key Facts at a Glance
- ✓Specialist diabetic food products qualify for 20% income tax relief under s.469 TCA 1997 where purchased on medical advice.
- ✓A GP or specialist confirmation letter confirming the diabetes diagnosis and medical requirement for a specialist diet must be retained.
- ✓Only specifically formulated and labelled diabetic food products qualify - generic low-sugar or reduced-carbohydrate products do not.
- ✓Retain itemised supermarket or health food store receipts; most pharmacies and stores can provide annual purchase summaries on request.
- ✓Both Type 1 and Type 2 diabetics can claim, provided qualifying products are purchased on medical advice and a GP confirmation letter is held.
- ✓Backdate up to four years - in 2025, qualifying diabetic food costs from 2022, 2023, 2024, and 2025 are all claimable in a single the Revenue system session.
How diabetic food expenses qualify for tax relief
Revenue allows income tax relief on qualifying specialist diabetic food products under the same provision that applies to coeliac patients "” the prescribed foods and medical appliances provision of Revenue's health expenses guidance. The basis is that people with diabetes may need to purchase specifically formulated diabetic food products as part of managing their condition on the advice of a doctor or dietitian.
A letter from your GP or specialist confirming your diabetes diagnosis is the key supporting document. You retain this letter for six years "” it does not need to be submitted with your claim but must be produced if Revenue requests it.
What diabetic food products qualify
Revenue's guidance covers specialist diabetic food products purchased specifically because of the diabetes diagnosis. Qualifying items generally include:
Standard healthy eating products purchased as a general lifestyle choice, or general low-sugar items available to the general public without medical indication, do not qualify. The qualifying principle is that the purchase is specifically necessitated by the diabetic condition on medical advice.
- Specifically formulated diabetic food products labelled for diabetic use.
- Sugar-free and diabetic-specific prepared foods where purchased on medical advice.
- Specialist diabetic cereal, bread, or biscuit products where distinguishable from general low-sugar alternatives.
Practical documentation approach
Given that diabetic food is purchased at supermarkets and health food stores as part of regular shopping, the documentation approach is:
- Retain receipts that identify the specifically diabetic or specialist food products purchased.
- Maintain a running annual total of qualifying items.
- Obtain and retain a GP letter confirming diabetes diagnosis.
- At year-end, enter the qualifying total in the Revenue system under Health Expenses.
Type 1 and Type 2 diabetes
The provision applies to individuals with both Type 1 and Type 2 diabetes who are purchasing specialist diabetic food products on medical advice. A written confirmation from your GP or diabetologist confirming the diagnosis and recommending a specialist diabetic diet meets the qualifying condition.
How diabetic food expenses qualify
Section 10.2 of Revenue's Tax and Duty Manual Part 15-01-12 provides for specialist diabetic food products as qualifying health expenses for diagnosed diabetic patients who purchase them on medical advice. This provision applies to patients with both Type 1 and Type 2 diabetes. The qualifying basis is that the patient's condition medically necessitates specific dietary management and the purchase of specialist diabetic food products as part of that management.
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The GP confirmation letter
A letter from your GP or treating specialist - an endocrinologist or diabetologist - confirming your diabetes diagnosis and the medical requirement for specialist diabetic dietary management is the key supporting document. The letter does not need to be renewed annually. Once obtained, it is retained indefinitely and produced if Revenue requests it during a compliance review. If you have not previously obtained such a letter, contact your GP surgery and ask for a letter confirming your diabetes diagnosis for tax purposes.
Ready to claim? MyTaxRebate handles your complete submission.
Which diabetic food products qualify
Specialist diabetic food products that are specifically formulated and labelled for diabetic dietary management qualify. These are products that would not typically be purchased by a person without diabetes - products formulated to have a lower glycaemic impact, reduced or no added sugar, or specifically designed for blood glucose management. In practice, the market for specifically-labelled diabetic food products is more limited than the market for general low-sugar or reduced-sugar foods.
General healthy eating purchases - low-sugar yoghurt, reduced-sugar cereals, or general health foods available to the general public - do not qualify because a diabetic also buys them. The qualifying test is whether the product is a specialist diabetic food purchased on medical advice, not whether the food is generally suitable for someone managing blood sugar.
Glucometers, CGMs, and insulin pumps as medical appliances
Glucose monitoring devices and insulin delivery devices qualify separately as prescribed medical appliances under section 3.4 of Revenue's guidance - not as diabetic food expenses. This includes:
These device expenses are claimed as medical appliances in the Health Expenses total - they are distinct from the specialist diabetic food expenses provision but are claimed through the same the Revenue system Health Expenses entry.
- Blood glucose meters (glucometers): The device and the ongoing cost of test strips and lancets qualify as medical appliances and consumables.
- Continuous glucose monitors (CGMs): Devices such as the Freestyle Libre, Dexcom G6/G7, and similar continuous glucose monitoring systems qualify as medical appliances where prescribed by a GP or specialist. Sensor consumables qualify as ongoing medical appliance consumables.
- Insulin pumps: Insulin delivery pumps qualify as medical appliances. Infusion sets, reservoirs, cannulas, and other consumables for the pump qualify as medical appliance consumables in each year they are purchased.
Insulin and prescribed diabetes medications
Insulin (in all formulations - rapid-acting, long-acting, mixed) and all other prescribed diabetes medications (metformin, SGLT-2 inhibitors, GLP-1 agonists, DPP-4 inhibitors, sulfonylureas, etc.) qualify as prescribed medicines under the standard prescription medication health expense provision. These are separate from both the diabetic food and medical appliance provisions - they are claimed as prescription medicines using pharmacy receipts or a year-end pharmacy statement.
Practical record-keeping for a combined diabetic claim
A comprehensive diabetic patient health expense claim can therefore combine three distinct categories: specialist diabetic food purchases (receipts from supermarkets and health stores); medical appliances and consumables (receipts for CGM sensors, insulin pump supplies, test strips, lancets); and prescription medicines (pharmacy receipts or year-end statement for insulin, oral medications). Enter the total of all three categories combined under Health Expenses in the Revenue system for the relevant year.
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Tax Scenarios
Family medical bills paid by one spouse
A family pays €2,400 of qualifying medical costs in the year. At 20% relief, that element alone can support about €480 of tax relief once any reimbursed amounts are excluded.
Dental work with part reimbursement
A patient pays €1,300 for qualifying dental treatment and receives €300 from insurance. Relief is based on the unreimbursed €1,000, giving a potential tax benefit of about €200.
Higher-cost specialist treatment
A taxpayer pays €4,800 for qualifying treatment with no reimbursement. At 20% relief, the tax effect on that expense can reach about €960, which is why record-keeping matters on larger medical claims.
Common Mistakes To Avoid
- ✗Claiming all food shopping receipts rather than only the specifically formulated diabetic specialist products - generic low-sugar or reduced-carbohydrate products available to the general public do not qualify. Only products specifically formulated and marketed for diabetics are qualifying specialist foods.
- ✗Not obtaining a GP confirmation letter - this letter confirming the diabetes diagnosis must be retained and produced if Revenue raises a compliance query. Without it, the diabetic food expense claim cannot be substantiated and may be disallowed.
- ✗Treating general healthy eating products as qualifying diabetic food - sugar-free versions of standard products sold in mainstream supermarkets, or products marketed to the general population for weight management, are not specialist diabetic foods and do not qualify for relief.
- ✗Not keeping itemised receipts for the qualifying products - the receipts must identify the specific diabetic food products purchased. Where receipts are unavailable, many pharmacies and specialist health food stores can provide annual purchase statements on request.
- ✗Not backdating prior years - if you have been purchasing qualifying specialist diabetic products for several years, up to four prior years of costs (2022 - 2025) can be claimed in 2025 with a single GP letter and the relevant year receipts or purchase statements.
When This Does Not Apply
Key Takeaways
- ➤ Specialist diabetic food products qualify for 20% relief with a GP confirmation letter and receipts.
- ➤ Document purchases specifically for diabetic food items "” not all food shopping.
- ➤ Backdate four years if you have not previously claimed.
- ➤ MyTaxRebate reviews your diabetes diagnosis documentation and qualifying food purchase records, then submits the full backdated claim across all available years - at no upfront cost.
Check Your Claim
MyTaxRebate can review your position and guide the next step.
Frequently Asked Questions
Can diabetics claim tax relief on food in Ireland?
Yes. Qualifying specialist diabetic food products can be claimed at 20% income tax relief under s.469 TCA 1997. A GP or specialist confirmation letter confirming the diabetes diagnosis and a medical requirement for a specialist diet must be retained, together with itemised receipts for the specifically formulated diabetic products purchased. The relief applies to the total annual spend on qualifying products.
What documentation is required?
A letter from your GP or diabetologist confirming the diabetes diagnosis and the medical requirement for specialist diabetic food products, together with itemised supermarket or health food store receipts identifying the qualifying products. Where original receipts are unavailable for prior years, annual purchase statements from the retailer or pharmacy are acceptable supporting documentation.
Does all food shopping qualify?
No. Only specifically formulated and labelled diabetic food products qualify - such as diabetic bread, diabetic chocolate, diabetic biscuits, and other products sold in the specialist dietary section of pharmacies and health food stores. General food shopping, including mainstream low-sugar products sold to the general population, does not qualify even if the items happen to be low in carbohydrates.
Can both Type 1 and Type 2 diabetics claim?
Yes. Both Type 1 and Type 2 diabetics can claim relief on qualifying specialist diabetic food products under s.469 TCA 1997, provided the expenditure is on medical advice and a GP or specialist confirmation letter confirming the diagnosis is retained. The relief applies equally to both types of diabetes. Each year's purchases are claimed in the year they were made.
How far back can I claim diabetic food expenses?
Up to four years. In 2025, you can claim for qualifying specialist diabetic food costs from 2022, 2023, 2024, and 2025. A single GP confirmation letter from the diagnosis year is sufficient for all backdated years. Request annual purchase summaries from your pharmacy or health food store for years where individual receipts are unavailable, then submit through the Revenue system's "review the tax position" section.
