Under Section 80D of the IT Act, you can claim a tax exemption of up to Rs. 5,000 for the payment towards preventive health check-ups in a financial year. The tax deduction should be within the specified limit of Rs. 25,000 or Rs. 50,000 based on the eligibility. For example, if you are not a senior citizen and paying Rs. 20,000 as premium towards the health insurance plan, you can claim tax exemption on preventive health check-ups of up to Rs. 5,000.