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GST invoice format for an eye clinic (ophthalmology and optical)

An eye clinic sells two very different things. Eye examinations, cataract and other eye surgery are exempt health care billed under SAC 999312, while spectacles, spectacle lenses, contact lenses and frames are goods taxed at 5% since 22 September 2025. The bill should carry the prescription power for each eye, the lens type and coating, the frame model, the ophthalmologist's or optometrist's registration and a clear split between exempt consultation lines and taxable optical lines.

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Sample eye clinic invoice

DescriptionHSN/SACQtyRate (₹)Taxable (₹)GST
Comprehensive eye examination and refraction9993121 VISIT500.00500.000%
Single vision spectacle lenses, anti-glare (pair)90011 PAIR2,200.002,200.005%
Full-rim metal spectacle frame90031 PCS1,800.001,800.005%
Monthly disposable contact lenses (box of 6)90012 BOX900.001,800.005%
Lubricating eye drops 10 ml30041 BTL160.00160.005%
Taxable value₹6,460.00
GST (CGST + SGST, or IGST if inter-state)₹298.00
Invoice total₹6,758.00

Sample prices are illustrative. Check the GST rate for your exact item or service before billing.

Extra fields a eye clinic invoice needs

Prescription power for each eye
Show sphere, cylinder, axis and add for the right and left eye. If a patient says the glasses are wrong, the bill proves which prescription you were asked to make and which you delivered.
Lens type and coating
Single vision, bifocal or progressive, and coatings such as anti-glare or blue-cut, change the price a lot. Listing them stops arguments over what was ordered and helps with warranty claims.
Frame brand, model and colour
Frames are often chosen from hundreds on display. Recording the model and colour lets you reorder the same frame and settle warranty claims for broken hinges.
Ophthalmologist or optometrist registration
Exempt eye examinations must be by a qualified practitioner. Printing the registration supports the exemption and helps insurance claims for surgery.
Delivery date for spectacles
Glasses with custom lenses take days to make. A promised delivery date on the bill sets expectations and records the advance against an undelivered order.
Surgery package details
For cataract surgery, list the intraocular lens type and package so patients and insurers can see what was included without the lens appearing as a separate taxable sale.

Standard GST invoice fields

Rule 46 of the CGST Rules applies to every tax invoice, including this one:

  • Supplier name, address and GSTIN
  • Consecutive invoice number (max 16 characters, unique for the year)
  • Date of issue
  • Customer name, address and GSTIN (if registered)
  • Place of supply with state name
  • HSN/SAC code per item
  • Description, quantity and unit
  • Taxable value after discounts
  • GST rate and CGST + SGST or IGST amounts
  • Signature or digital signature

Read more: Tax Invoice vs Bill of Supply: Which One Should You Issue? · Advance Payment Under GST: Receipt Vouchers, Tax and Adjustment · What Is an HSN Code and Why Does Every GST Invoice Need One?

GST rules that matter for a eye clinic

Spectacles, lenses and frames all moved to 5%

The 56th GST Council meeting brought corrective spectacles (9004), spectacle and contact lenses (9001), frames and mountings (9003) and glass for corrective spectacles (7015 10) to 5%, effective 22 September 2025. Before this, frames and some lenses sat at higher rates, and many optical counters still have old rates in their software. Update every optical item master. Sunglasses that do not correct vision were not part of this list, so do not assume they are at 5%.

Eye tests and surgery are exempt health care

A refraction test, eye examination, cataract surgery, glaucoma treatment or LASIK done to correct a vision defect is treatment of an abnormality by a qualified practitioner, and is exempt. The intraocular lens implanted during cataract surgery is part of that composite service, so it is not billed as taxable goods. A clinic offering only these services need not register. Selling spectacles over the counter is a separate taxable supply of goods.

Mixed bills and registration

Most eye clinics with an optical counter have taxable goods sales, so registration is usually needed once aggregate turnover, including exempt surgery fees, crosses the threshold for a mixed business. Use one invoice-cum-bill of supply that lists the exempt examination and the taxable spectacles separately, or issue two documents. Never fold the examination fee into the spectacles price or vice versa.

Advance on spectacles orders

Patients usually pay part of the price when ordering glasses. For goods, GST is not due on advances under the current rules, so the tax is charged on the invoice when the spectacles are delivered. Issue a receipt for the advance and show it as adjusted on the final invoice. Keep a record of uncollected orders and refund advances properly when a patient cancels.

Input tax credit on optical stock

Optical lenses and frames bought from labs and distributors carry 5% GST, which a registered clinic can claim as credit against tax on spectacles sold. Credit related to exempt surgery, such as surgical consumables and equipment, must be reversed. Common costs like rent are split using the formula in Rule 42. Keep optical purchases on a separate ledger to make the split simple.

Children's and senior screening camps

Eye clinics often run free or subsidised screening camps with schools, employers or charitable trusts. Where a corporate pays the clinic to screen its employees, the screening is still diagnosis by qualified staff and is exempt. Spectacles handed out at such camps are a supply of goods; if a sponsor pays for them, raise a tax invoice to the sponsor at 5%. Free spectacles with no consideration need care: credit on them may have to be reversed as gifts.

Common billing mistakes

  • Billing spectacle frames at the old higher rate after 22 September 2025 instead of 5%.
  • Charging GST on the intraocular lens used in cataract surgery as if it were a separate sale.
  • Leaving the prescription power off the spectacles bill, so remakes and complaints cannot be resolved.
  • Applying the 5% spectacle rate to non-corrective sunglasses without checking their classification.

Eye clinic GST invoice: FAQ

What is the GST rate on spectacles?

Corrective spectacles, spectacle lenses, contact lenses and frames are taxed at 5% from 22 September 2025. Use HSN 9004 for complete spectacles, 9001 for lenses and 9003 for frames.

Is an eye test taxable?

No. Eye examination and refraction by a qualified ophthalmologist or optometrist is exempt health care. If it is free with a spectacles purchase, show it as a zero-value line or note.

Is GST charged on cataract surgery?

No. Cataract surgery, including the lens implanted, is exempt treatment. The clinic pays GST on the lens and consumables it buys and cannot claim that credit.

Can one bill show both the eye test and spectacles?

Yes. A registered clinic can issue an invoice-cum-bill of supply listing the exempt examination with no tax and the spectacles at 5%, each with its own SAC or HSN.

Sources: GST Council — PIB press release on 56th Council rate rationalisation (3 Sep 2025) · CBIC — Tax information portal (rate and exemption notifications)

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