Medical Expense Deductions Calculator
The Medical Expense Deductions Calculator estimates an income, tax or statutory-cost estimate for the figures entered from the income, employment or business status, relevant period, allowances and current thresholds shown on the page. Replace the example values with your own medical expense deductions figures and recalculate after changing an assumption. Use it to compare scenarios, then verify any current rate or fee before acting.
[According to the Customs Tax Act 1938 Section 17]
Estimates of the amount saved by the medical expense deduction under Thai law.
Including deductible expenses.
Expense details.
Suggestions.
- Keep all receipts and properly.
- Receipts must be from authorized hospitals only.
- You can deduct for yourself, your spouse, your children, your parents.
- File PND 91 or PND 92 with the financial report.
What is a medical expense deduction?
Medical expenses deduction is a right of Thais under the tax law. If you have medical expenses (treatment, medicines, dental expenses, etc.) you can deduct that money from your taxable income, which reduces the tax you pay.
Deductible expenses.
- Medical costs: Room, surgery, doctors.
- Value: Prescription drugs, medical supplies.
- Tent value: Timon, scraping the limestone, the tooth.
- Other values: Glasses, earphones, a mouse.
Non-deductible expenses.
- Vitamins and non-drug supplements.
- Cosmetic surgery and plastic surgery.
- Weight loss for beauty.
- Non-medical fees (e. g., kissing fees)
Examples: Medical expenses 21,000 baht
Suppose you have the following medical expenses:
- Medical costs: 10,000 baht
- Value of the drug: 3,000 baht
- Tent value: 5,000 baht
- The value of the glasses: 2,000 baht
- Other values: 1,000 baht
- Total: 21,000 baht
If you have an annual income of 600,000 baht and the tax rate is 20%, you can deduct 21,000 baht which reduces the tax: 21,000 × 20% = 4,200 baht
Frequently asked questions
What are the deductible medical expenses?
What are the non-deductible expenses?
There's no maximum amount for medical expenses?
What class do I have to submit?
Official reference source
English calculator guide
How to use the Medical Expense Deductions Calculator
Use this page to test a specific medical expense deductions scenario. Enter your own values in the calculator above, review the units beside each field, and recalculate after changing an assumption. The result updates the medical expense deductions estimate instead of relying on a generic example.
- Build a baseline medical expense deductions case with figures that match your situation.
- Run a second medical expense deductions case after changing the rate, period, quantity or other key assumption.
- Record the difference between the two medical expense deductions results and the input responsible for it.
Inputs for the medical expense deductions estimate
For this medical expense deductions calculation, check the income, employment or business status, relevant period, allowances and current thresholds shown on the page. The result is designed to show an income, tax or statutory-cost estimate for the figures entered, not a guaranteed provider price or official decision.
How the medical expense deductions result is calculated
The calculator combines the entered quantities, rates and fixed costs to produce the displayed estimate. Reusing the same medical expense deductions inputs will produce the same estimate, which makes the page suitable for controlled scenario comparisons.
Checks for a medical expense deductions decision
Check the effective date and confirm current rules with the relevant Thai authority or a qualified adviser. For medical expense deductions, This result is for personal tracking and general education. It is not a diagnosis or treatment recommendation; discuss unusual or concerning results with a qualified health professional. Recheck the entered values and units if the result looks unexpected.
- Language QA
- Terminology, numeric values and calculator controls checked
- Calculator scope
- Cost estimation
- Last English review
- 26 July 2026