VAT Invoices and POS Software in Sri Lanka

Sri Lanka’s VAT invoice rules have been changing, and many shop owners are unsure whether their billing software is ready. This guide summarises what has been publicly reported and gives you a practical list of questions for your POS provider.

Important: this is a general overview, not tax advice. The dates and requirements below come from published commentary and were last reviewed in October 2026. Rules and deadlines have moved more than once, so always confirm the current position with the Inland Revenue Department (IRD) or your accountant before you act.

Does This Apply to You?

The revised invoice format is described as applying to VAT-registered persons. Whether your business must be VAT-registered depends on the value of your taxable supplies and on the rules in force, which your accountant can confirm. If you are not VAT-registered, the format rules are not aimed at you, but your bills should still be clear and professional.

The Revised Tax Invoice Format: What Has Been Reported

According to published commentary from Sri Lankan tax advisers, the timeline has looked like this:

Recent reports say the IRD has confirmed 1 October 2026 as the date the revised format becomes mandatory, so it should already be in force. Check the gazette and IRD circular directly for the exact mandatory fields, and the Inland Revenue Department website for the current position.

Changes reported for the revised format

Press and tax-update reports describe the following. Treat them as a starting point and verify each against the gazette:

• A prominent “TAX INVOICE” title, so tax invoices are clearly distinguished from quotations, proforma invoices and receipts.
• Tax Identification Numbers (TIN) shown in the nine-digit form issued by the IRD.
• A structured invoice number sequence.
• “Date of delivery” renamed “date of supply”, and telephone numbers no longer mandatory.
• Amounts in LKR to two decimal places, with a clear value and VAT breakdown.

The reports also say the format prescribes required content rather than a fixed design, so you can still add your logo, branding and extra columns. Confirm that against the gazette too.

National e-Invoicing and RAMIS

Separately, the IRD issued Notice No. SEC/PN/VAT/2026-03 (4 May 2026) on a National e-Invoicing System with Web API integration to its RAMIS platform. As reported, it began as a pilot with selected VAT-registered businesses, with Phase 1 covering export-oriented enterprises and Phase 2 expanding to all VAT-registered persons. The commentary we reviewed gives no start date for Phase 2 and does not say whether retail point-of-sale systems are in scope. Treat this as something to watch, not something to panic about, and ask the IRD or your accountant what applies to your business.

Questions to Ask Your POS Provider

Whichever system you use, ask these in writing:

1. Can the bill show every field the current IRD format requires? Ask for a sample printout and have your accountant check it against the gazette, including the “TAX INVOICE” title, TIN and date of supply.
2. Can I tell a tax invoice apart from a quotation or receipt? If you also send quotations, they should not look like tax invoices. See billing software for how quotations convert to invoices.
3. Can I customise the bill layout? You should be able to add your logo, shop name, VAT details and a custom footer, on a thermal receipt printer or A4.
4. How does it handle VAT-exempt and VAT-applicable items on the same bill? This matters for pharmacies and mixed shops. See pharmacy POS software.
5. Can I issue credit and debit notes? Corrections happen; your records should show them.
6. Can I export reports to PDF or Excel for my accountant? Clean data makes VAT filing quicker.
7. What is your plan if the IRD requires system integration? A straight answer (“we will confirm after the IRD publishes specifications”) is better than a vague promise.
8. Are updates included? If the rules change again, you want the fix delivered, not sold as an upgrade. See monthly vs one-time POS cost.

What Invenova Can and Cannot Claim

Invenova bills can be customised with your logo, shop name, VAT details and a custom footer, and print on thermal receipt printers or A4. Pharmacy bills can carry VAT-exempt and VAT-applicable medicines together. We are not going to claim certification against requirements the IRD has not finalised. If you are VAT-registered, book a demo and bring your accountant, so they can check a sample bill against the current format.

A Simple Readiness Checklist

Related Guides

Choosing billing software? Read How to Choose POS Software in Sri Lanka and our billing software page.