Sri Lanka Tax Invoice Format: 2026 VAT Checklist

Sri Lanka's new VAT tax invoice format, specified by the Inland Revenue Department (IRD) in Gazette Extraordinary No. 2481/22 of 27 March 2026, is fully effective from 1 July 2026 for VAT-registered persons issuing tax invoices for taxable supplies. A compliant tax invoice should clearly show the words TAX INVOICE, the supplier's TIN, name, and address, the purchaser's TIN, name, and address where the purchaser is VAT-registered, the prescribed invoice serial number, invoice date, date of supply, a specific description and quantity of the goods or services, the value excluding VAT, the VAT amount, the total including VAT, and LKR values where a permitted foreign-currency invoice is used.

The gazette was made under section 20 of the Value Added Tax Act No. 14 of 2002, and it rescinds the earlier format issued under Gazette No. 2463/05 of 17 November 2025 with effect from 1 July 2026. The IRD says the revised Tax Invoice format is legally binding for VAT-registered persons and will be fully implemented from that date in its circular SEC/2026/E/03 of 20 May 2026 on the revised tax invoice format. That makes the current Sri Lanka tax invoice format a practical compliance issue, not only a template-design question.

For an issuer, the revised format sets out what must appear before a VAT tax invoice is compliant. For a purchaser, the same fields become evidence checks: whether the supplier invoice supports VAT records, whether the purchaser details are sufficient for input VAT review, and whether the captured data can be traced back to the original document if the IRD later questions it.

Mandatory fields to check on the invoice

The revised format is easiest to apply as a field checklist. A Sri Lankan VAT tax invoice does not have to look identical across every business, but the mandatory information must be clear enough for a reviewer to identify it without guessing.

• Invoice title: the words TAX INVOICE displayed prominently
• Supplier identity: supplier TIN, registered business name, and registered address as per the VAT registration certificate
• Purchaser identity: purchaser TIN, name, and address where the purchaser is VAT-registered
• Invoice number: a unique serial number using the prescribed structure
• Dates: invoice date and date of supply
• Supply details: specific description of the goods or services and the quantity supplied
• VAT values: value excluding VAT, VAT amount charged, and total value including VAT
• Foreign-currency support: LKR conversion values where a foreign-currency tax invoice is permitted

Supplier details are not just administrative text. They connect the invoice to the VAT-registered person issuing it. Purchaser details matter because the purchaser's records may need to support an input VAT claim and cross-verification between supplier and purchaser records.

Optional fields can still be useful, but they should not be confused with mandatory requirements. Mode of payment, place of supply, total amount in words, internal notes, and reference numbers may improve clarity for the business, yet they do not replace the core tax invoice fields. The same distinction appears in other VAT and GST systems, including Singapore GST tax invoice requirements, where useful commercial details sit alongside, not instead of, the required tax fields.

What the new IRD tax invoice format looks like

Annexure I to the gazette does not only list particulars. It ends with a specimen layout at clause 6.1, and clause 6.4 sets the rule that makes the whole document readable: "The items marked with an asterisk (*) shall be optional." Reproducing that layout is the fastest way to see which fields are actually required and where they belong on the page.

The specimen below follows the gazette layout, with the field positions, column headings, summary rows and asterisks as published. The party names, addresses, TINs, line items and amounts are invented for illustration.

+----------------------------------------------------------------------+
|                       +-------------------+                          |
|                       |    TAX INVOICE    |  [1]                     |
|                       +-------------------+                          |
+-----------------------------------+----------------------------------+
| [2] Date of Invoice: 07/14/2026   | [3] Tax Invoice No.:             |
|                                   |     26JUL_BR03_1                 |
+-----------------------------------+----------------------------------+
| [4] Supplier's TIN : 114237865    | [5] Purchaser's TIN : 209884517  |
|     Supplier's Name: Serendib     |     Purchaser's Name: Lanka      |
|       Packaging (Pvt) Ltd         |       Foods Distribution (Pvt)   |
|     Address: No. 42, Nawala Road, |       Ltd                        |
|       Rajagiriya                  |     Address: No. 187, Galle Road,|
|                                   |       Colombo 03                 |
| [6] Telephone No.*: 011 2863400   | [6] Telephone No.*: (omitted)    |
+-----------------------------------+----------------------------------+
| [7] Date of Supply: 07/10/2026    | [8] Place of Supply:*            |
|                                   |       Biyagama warehouse         |
+-----------------------------------+----------------------------------+
| [9] Additional Information if any:*  PO 4517 / DN-2261               |
+------+-----------------------------+--------+----------+-------------+
| Ref* | Description of Goods or     |Quantity|   Unit   |   Amount    |
| [10] | Services             [11]   |  [12]  |Price [13]|  Excluding  |
|      |                             |        |          |  VAT (Rs.)  |
+------+-----------------------------+--------+----------+-------------+
| CTN  | Corrugated cartons,         |  1,200 |   185.00 |  222,000.00 |
|      | 350 x 250 x 200 mm          |        |          |             |
| FLM  | Printed shrink film,        |    250 |   460.00 |  115,000.00 |
|      | 80 micron (kg)              |        |          |             |
| WRP  | Pallet wrapping service     |     12 | 2,750.00 |   33,000.00 |
+------+-----------------------------+--------+----------+-------------+
| [14] Total Value of Supply:                            |  370,000.00 |
+--------------------------------------------------------+-------------+
| [15] VAT Amount (Total Value of Supply @ VAT Rate 18%) |   66,600.00 |
+--------------------------------------------------------+-------------+
| [16] Total Amount/consideration including VAT:         |  436,600.00 |
+--------------------------------------------------------+-------------+
| [17] Total Amount in words:* Rupees Four Hundred and Thirty-Six      |
|        Thousand Six Hundred Only                                     |
+----------------------------------------------------------------------+
| [18] Mode of Payment:* Bank transfer, 30 days from invoice date      |
+----------------------------------------------------------------------+

The standard VAT rate used in the arithmetic above is 18%, in force since 1 January 2024 according to the IRD's value added tax page. A separate rate of 20.5% applies to the supply of financial services for taxable periods commencing on or after 1 July 2026; it does not change the standard rate on ordinary supplies of goods and services.

Which fields are mandatory and which are optional

This is where many summaries of the new format go wrong. Several state that telephone numbers are required for both the issuer and the recipient, that the total consideration must also be written in words, and that the mode of payment must be explicitly stated. The gazette marks all three with an asterisk, and clause 6.4 makes asterisked items optional. An invoice is not defective for leaving them out.

Field	Gazette clause	Mandatory or optional	Prescribed format	What a reviewer checks
[1] Title TAX INVOICE	1.1–1.2	Mandatory	Prominent, bold or highlighted	Present on the face of the document, not "Invoice" or "Bill"
[2] Date of invoice	4.1(b)	Mandatory	MM/DD/YYYY	Date of issue, captured separately from date of supply
[3] Invoice serial number	4.1(a)	Mandatory	YYMMM_QQQQ_XXXXX, no spaces, maximum 40 characters	Structure and continuity
[4] Supplier's TIN, name, address	2.1(a)–(c)	Mandatory	TIN of nine digits; details as per the VAT registration certificate	Matches the supplier master record
[5] Purchaser's TIN, name, address	3.1(a)–(c)	Mandatory where the purchaser is VAT-registered	TIN of nine digits	Present wherever input VAT will be claimed
[6] Telephone number	2.1(d), 3.1(d)	Optional	None prescribed	Absence is not a defect
[7] Date of supply	4.1(d)	Mandatory	MM/DD/YYYY	When ownership passed, which drives the VAT period
[8] Place of supply	4.1(c)	Optional	None prescribed	Relevant only where delivery originates elsewhere
[9] Additional information	5.1	Optional	None prescribed	Free text, never a substitute for a required field
[10] Reference	Specimen column, asterisked	Optional	None prescribed	Internal codes only
[11] Description of goods or services	4.1(e)	Mandatory	A clear description	Not "services", "items" or "miscellaneous"
[12] Quantity or volume	4.1(f)	Mandatory	Measurable units	Units stated, not a bare number
[13] Unit price	Not listed at 4.1	Shown in the gazette specimen; not listed among the specified particulars	None prescribed	Useful, but its absence is not a format breach
[14] Total value of supply excluding VAT	4.1(g)(i)	Mandatory	LKR, inclusive of cents, two decimal places	Reconciles to the line amounts
[15] VAT amount charged	4.1(g)(ii)	Mandatory	LKR, two decimal places	Reconciles to the net value at the applicable rate
[16] Total consideration including VAT	4.1(g)(iii)	Mandatory	LKR, two decimal places	Net plus VAT equals the total
[17] Total consideration in words	4.1(g)(iv)	Optional	None prescribed	Absence is not a defect
[18] Mode of payment	4.1(h)	Optional	Cash, bank transfer, cheque, card, mobile or online payment	The expected mode is acceptable where the actual one is not yet known

Only four fields carry a data format the gazette actually prescribes: the TIN is nine digits, both dates are expressed in MM/DD/YYYY, money is stated in Sri Lankan Rupees inclusive of cents to two decimal places, and the serial number follows YYMMM_QQQQ_XXXXX without spaces and within 40 characters. MM/DD/YYYY is what the gazette states, at 4.1(b) and again at 4.1(d), so a Sri Lankan tax invoice dated 07/14/2026 is 14 July, not an error.

Two things the gazette does not do are worth stating plainly, because invoice templates often add them as if required. It does not require the VAT rate to be printed as a field, although the summary row is labelled "Total Value of Supply @ VAT Rate", and it prescribes no retention period, currency-code field, exchange-rate line, QR code, signature, or original-and-copy marking. Clause 6.2 does allow a supplier to add rows or columns for further information, and clause 6.3 allows a logo or trademark in the header or footer.

Serial numbers, dates, and currency amounts need closer review

The prescribed invoice serial number is one of the easiest places for a format error to hide. The structure is YYMMM_QQQQ_XXXXX: the last two digits of the calendar year in which the invoice is issued, the first three characters of the name of the month in uppercase letters, a classification code, and a sequential numeric number. For an invoice issued in July 2026, the year and month portion would begin with 26JUL.

Some summaries say the first two digits of the year instead. That wording comes from the circular, which says "1st two digits" while giving 26 for the year 2026 as its own example. For 2026 both readings happen to produce the same 26, which is why the discrepancy rarely surfaces, but the gazette is the legal instrument and clause 4.1(a)(i) says the last two digits.

The classification code can identify a branch, department, unit, project, customer category, or invoice type classification. The circular confirms that this QQQQ component may be numbers, letters, or a mix of both, and that its length is 1 to 15 characters. The XXXXX component is narrower: it must consist solely of digits, with no letters and no symbols.

The remaining points are mechanical. The complete invoice number should not contain spaces and is limited to 40 characters, and the sequence should remain continuous unless the circumstances described by the IRD justify a restart. The two instruments describe that trigger differently: the gazette allows numbering to be recommenced at the beginning of each month or year "where it is necessary", while the circular allows a restart "where the reason is beyond the control of the VAT-registered person". Neither reads as a licence to restart for convenience.

A worked example: 26JUL_BR03_1

The gazette gives one worked serial number, for the first tax invoice issued in July 2026 by Branch 03. It breaks down like this:

Segment	Value	What it means
YY	26	The last two digits of 2026
MMM	JUL	The first three characters of July, in uppercase
QQQQ	BR03	The classification code chosen by the supplier, here identifying Branch 03
XXXXX	1	The sequential number of the invoice

The last segment is worth dwelling on. XXXXX is a placeholder for a numeric sequence, not an instruction to pad to five digits, which is why the gazette's own example ends in a single 1. Separators are underscores, and the whole string, 26JUL_BR03_1, is 12 characters against a 40-character ceiling.

One exception explains why an AP team may legitimately receive supplier invoices that do not follow this pattern at all. Under the circular, the YYMMM_QQQQ_ component may be treated as optional for a registered person who obtained the Commissioner-General's approval, before 1 July 2026, on expressing interest in integrating their ERP system with RAMIS through a Web API, provided that integration is completed on or before 31 December 2026. A supplier in that position can issue a conforming invoice with a plainer serial number, so an unexpected format is worth a query rather than an immediate rejection.

Dates and currency amounts

Dates also need separate capture. The invoice date is the date the invoice is issued. The date of supply is tied to when ownership of goods or services passes. Treating those as the same field can put a transaction into the wrong VAT period, especially where goods are delivered or services are completed before the invoice is raised.

The value fields should show the value of supply excluding VAT, the VAT amount charged, and the total value including VAT. Amounts are stated in Sri Lankan Rupees with two decimal places. Where a registered person issues a tax invoice in a foreign currency with the required Central Bank of Sri Lanka approval, the invoice should also show, at minimum, the LKR conversion for those three values, converted at the foreign currency selling rate published by the Central Bank of Sri Lanka on the date of the tax invoice. The circular adds that the converted value must not be less than the open market value of the supply, and it permits the extra rows or columns needed to display the conversion. These currency rules come from the circular; the gazette itself does not deal with foreign-currency invoices.

The revised format is for VAT-taxable supplies. The gazette states that flatly at clause 4.2: a tax invoice shall include only goods or services subject to VAT. The circular then softens it with an exception, allowing an exempt or excluded supply to be separately disclosed on the invoice where it is directly related to, or forms an integral part of, the taxable supply. That exception is a concession in the circular rather than a rule in the gazette, so it is worth applying narrowly.

Why older Sri Lanka tax invoice summaries show different dates

Some search results and adviser notes still mention January or April 2026 because they were written before the later IRD updates settled the implementation date. For practical invoice review, the operative position is the later one: full implementation from 1 July 2026.

The date trail is short but important. A format specified in a December 2025 paper notice was due to take effect first. IRD notice SEC/PN/VAT/2026-01 of 31 March 2026 postponed implementation of the specified tax invoice format until 1 July 2026, and Gazette 2481/22, published four days earlier, carries the specification that now applies. Circular SEC/2026/E/03 of 20 May 2026 then confirmed the revised format's full implementation from 1 July 2026 and withdrew the previously issued format from that date.

That distinction matters when businesses update invoice templates, audit supplier invoices, or configure finance-system exports. In regional VAT work, the current effective date is often as important as the field list itself; similar country-specific timing issues appear in guides such as UAE VAT invoice requirements. For Sri Lanka, invoices issued for taxable supplies from 1 July 2026 should be checked against the revised format rather than an older summary.

Why the standard tax invoice now carries more weight

The format change did not arrive on its own, and two related shifts explain why a correctly formatted tax invoice matters more than it did a year ago.

The first is the end of SVAT. The scheme, which allowed business-to-business VAT obligations to be settled through credit vouchers and documentation instead of money changing hands, was abolished with effect from 1 October 2025 according to the IRD's SVAT repeal FAQs. All SVAT registrations were cancelled, Registered Identified Supplier and Registered Identified Purchaser statuses were terminated, and suspended tax invoices and SVAT credit vouchers are no longer used. Former RIS entities now charge VAT in currency and issue standard tax invoices, and former RIP entities pay VAT in currency and request a tax invoice from the supplier. A risk-based refund system replaced the scheme for exporters and eligible projects. For a sizeable population of businesses, the standard tax invoice is therefore a recent arrival in daily practice rather than a familiar document.

The second is enforcement. From 1 July 2026, failing to furnish valid tax invoices as required under section 21 was added as an offence under section 67 of the VAT Act, according to the IRD notice of 3 July 2026 on the VAT (Amendment) Act. For offences committed on or after 1 October 2025, section 67 carries a fine not exceeding LKR 1,000,000, imprisonment for up to six months, or both. The circular's own list of consequences is less dramatic but arrives sooner: invoices rejected for input credit purposes, inconsistencies in VAT returns, increased audit scrutiny, and possible penalties under the VAT Act.

One thing did not change, despite adviser commentary that suggested otherwise. The same notice confirms that the proposed reduction in the VAT registration threshold was abandoned, so the thresholds stand at LKR 15 million in any quarterly taxable period or LKR 60 million in the twelve-month period then ending.

Purchaser-side AP checks for VAT records

For an AP team, the revised format is not only a question of whether the supplier's PDF looks correct. The invoice data also needs to be captured in a way that supports review, query handling, and VAT schedule preparation.

A useful review spreadsheet should preserve the link between each row and the original evidence. Capture the source file name, page number where relevant, supplier TIN, supplier name, supplier address, purchaser TIN, purchaser name, purchaser address, invoice number, invoice date, date of supply, description, quantity, value excluding VAT, VAT amount, total including VAT, currency, and any LKR conversion values. If multiple line items are captured, keep the invoice-level fields consistent across the related rows.

The most useful review flags are specific:

• Purchaser TIN missing where the purchaser is VAT-registered
• Supplier TIN, name, or address not matching the supplier master record or registration details held by the business
• Invoice number containing spaces, missing the expected year and month pattern, or not following the supplier's sequence
• Invoice date present but date of supply missing
• Descriptions such as services, items, or miscellaneous without enough detail to identify the supply
• VAT-exclusive value, VAT amount, or VAT-inclusive total missing or not reconciling
• Foreign-currency invoice without the required LKR conversion values
• VAT-taxable, exempt, and out-of-scope supplies combined without clear separation

The spreadsheet is a control layer, not a replacement for the invoice. Keep the source PDF or image available, and retain enough reference detail that a reviewer can move from a VAT schedule row back to the exact supplier document. This is the same practical discipline behind many tax invoice regimes, even though the field rules differ by country; for comparison, India GST invoice requirements under Rule 46 also turn invoice fields into evidence for tax reporting.

For VAT schedule readiness, the goal is to avoid finding basic field problems only after a return or reconciliation is already in progress. Missing purchaser details, vague descriptions, mixed supply types, and broken VAT breakdowns are better raised with the supplier while the transaction is still fresh.

E-invoicing is a pilot context, not a universal invoice mandate yet

Sri Lanka's 2026 e-invoicing work sits beside the revised tax invoice format, but it should not be read as a live universal e-invoicing mandate for every VAT-registered business. The IRD's National e-Invoicing Web API notice of 4 May 2026 describes a phased system, beginning with selected VAT-registered persons and export-oriented sectors, with full Web API integration expected by the end of 2026.

The Web API context is about transmitting VAT invoice or schedule-related data from ERP systems to RAMIS in real time. The notice describes selected sectors already integrated, including garment export entities, tea export entities, and tea manufacturing entities through tea brokers' systems. It also describes expansion to all VAT-registered persons as a later phase.

Purchaser-side review remains part of the model. The IRD notice says supplier-submitted records can appear in the purchaser's RAMIS e-Service interface for review and approval, including bulk approval of 5,000 records at once. It also says purchases from suppliers that have not integrated the Web API may still be submitted through Excel or CSV files or the RAMIS schedule record submission interface.

One constraint in that notice is worth designing around. A schedule record submitted through the Web API cannot be amended or deleted afterwards. Any adjustment for tax overstated or understated on an invoice has to be made by issuing a tax credit note or tax debit note instead, which puts a premium on the invoice fields being right before the record is transmitted rather than corrected later.

That is why structured invoice data matters even before every business is integrated through an API. The same fields that make a tax invoice reviewable today, TINs, dates, invoice numbers, supply descriptions, VAT values, and source references, are the fields that make future schedule review and system matching less fragile.

A practical acceptance checklist before filing or issuing

Before issuing or accepting a Sri Lankan VAT tax invoice, check the document in this order:

1. Confirm the document is clearly marked TAX INVOICE and that you hold current VAT registration details for the supplier.
2. Check the supplier TIN, registered name, and registered address.
3. Check the purchaser TIN, name, and address where the purchaser is VAT-registered.
4. Verify the invoice serial number, including the year, month, classification code, sequence, spacing, and length.
5. Capture both the invoice date and the date of supply.
6. Confirm that goods or services are described specifically and that quantities are stated in appropriate units.
7. Check the value excluding VAT, VAT amount, and total including VAT.
8. For permitted foreign-currency invoices, confirm the LKR conversion values are shown.
9. Make sure VAT-taxable supplies are not confused with exempt or out-of-scope supplies.
10. Retain the source invoice and enough file or page references to trace every captured row back to the evidence.

The first step is harder than it looks, because there is no published register of active VAT-registered persons to check a supplier against. The IRD publishes only a list of VAT registration deactivated persons, maintained under section 16 of the VAT Act and last updated on 18 November 2025. That list will catch a supplier whose registration has been cancelled, but it cannot confirm that a registration is live, so the supplier's VAT registration certificate and your own supplier master data remain the working evidence. This may change: the VAT (Amendment) Act provides for the Commissioner-General to publish the name, address, tax registration number and registration status of every registered person.

If a material field is missing or unclear, query the supplier before treating the invoice as support for an input VAT claim. If the issue affects tax treatment, supply classification, foreign-currency conversion, or a large VAT amount, route it to the accountant responsible for VAT review rather than resolving it as a data-entry correction.