Create Tax Invoices That Meet Sri Lanka‘s New VAT Rules
From 1st January 2026 every VAT registered business in Sri Lanka will need to provide a tax invoice in accordance with the latest rules from the Inland Revenue Department. This can be a difficult task to manage manually especially across multiple customers, branches and transactions.
VAT compliant invoicing solution from us enable‘s a business to generate professional tax invoices in accordance with the latest VAT legislation in Sri Lanka, easily and quickly.
Tax Invoice Software for VAT Registered Businesses in Sri Lanka
No matter what kind of business you run as wholesaler, retailer, manufacturer, service provider, exporter or distributor, you need to keep proper VAT records. With our software you can generate tax invoices as per the required formats.
Official Source of the New Tax Invoice Format
Under the provisions of VAT Act No. 14 of 2002 the Inland Revenue Department is Sri Lanka has introduced the new Tax Invoice format. It states in the Gazette Extraordinary No. 2463/05 dated 17 November 2025; The format and specifications are provided in Annexure I – Tax Invoice Specification.
Authority Issuing the Notification
The notification was issued by:
Required Details in a Sri Lanka VAT Tax Invoice
According to Annexure I – Tax Invoice Specification, every VAT-registered business must generate a Tax Invoice containing the following information:
Tax Invoice Title
The document must clearly display the title "TAX INVOICE"The title should be prominently shown at the top of the invoice and highlighted for easy identification. This helps customers and tax authorities quickly understand the purpose of the document. A clear and visible title also keeps the invoice professional and aligned with standard GST invoicing practices.
Supplier Details
The invoice must contain the supplier's (VAT-registered Business who sold goods) information exactly as registered with the Inland Revenue Department:
- Taxpayer Identification Number (TIN)
- Business Name
- Business Address
- Telephone Number
- Email (Optional)
These details should appear on invoice's top-left section.
Purchaser Details
The invoice must also include the purchaser's (VAT-registered business Who buy goods) details:
- Taxpayer Identification Number (TIN)
- Name
- Address
- Telephone Number
- Email (Optional)
These details should appear on invoice's top-right section.
Invoice Information
Every tax invoice must include:
- Invoice Serial Number must follow the prescribed format "YYMMM_QQQQ_XXXXX"
- Date of Invoice in MM/DD/YYYY format
- Place of Supply
- Date of Delivery in MM/DD/YYYY format
Example: 25OCT_BR03_1
Product or Service Details
The invoice should clearly display:
- Description of goods or services
- Quantity or volume supplied
- Unit price
- Amount excluding VAT
A clear breakdown helps both suppliers and purchasers maintain accurate records.
VAT and Total Amount
The invoice must show:
- Total value excluding VAT
- VAT amount charged (currently 18%)
- Total value including VAT
- Total amount in words
All values must be shown in Sri Lankan Rupees (LKR) without cents.
Mode of Payment
The invoice should Clearly mention payment mode, such as:
- Cash
- Bank Transfer
- Cheque
- Credit Card
- Debit Card
- Mobile Payment
- Online Payment
Additional Information
Businesses can include any other relevant details related to the transaction, if required. This may include terms and conditions, return or refund policies, payment instructions, delivery details, or other important notes. These details help customers clearly understand the terms of the transaction.
Record Retention Requirement
The supplier and purchaser must retain tax invoice records for at least five years from the end of the taxable period. Both original and duplicate copies should be preserved for audit and compliance purposes.
Invoice Serial Number Format
The invoice number must follow the prescribed format: YYMMM_QQQQ_XXXXX
Example: 25OCT_BR03_1
- YY = Last two digits of the year
- MMM = First three letters of the month in uppercase
- QQQQ = Branch, project, unit, subsidiary, or customer code
- XXXXX = Running numerical invoice number
The total invoice number length must not exceed 40 characters and must not contain spaces.
More Explainable Blocks for Sri Lankan Businesses
The page content is built for businesses that need proper tax invoice generation, audit-ready records, accurate VAT calculations, and a simple invoice creation process.
Automatic VAT Calculation
Enter products, quantities and unit prices while the system calculates taxable values, VAT amounts and invoice totals automatically.
Original & Duplicate Copies
Print tax invoices with original and duplicate copy labels so both supplier and purchaser can preserve records properly.
Structured Invoice Layout
Supplier details, purchaser details, invoice information, item details, payment mode and totals can be presented in a professional invoice layout.
LKR Invoice Amounts
Default currency can be selected as LKR, helping Sri Lankan businesses maintain local tax invoice records.
Branch / Project Prefix
Invoice serial numbers can include branch, project, unit, subsidiary or customer code to support organized invoice management.
Future-Ready Documentation
Maintain invoices, customer details, VAT records and tax data in an organized way for future reference and compliance needs.
One Time Label Settings for Invoice for Sri Lanka Invoice Format
Configure supplier details, purchaser details, invoice headings, prefix and date format once, then create VAT-compliant invoices faster.
1Add Supplier
- Upload Logo
- Enter Your Company Name which will display as the supplier;
- Enter address of the supplier;
- Enter Telephone Number
- Select Taxation type “VAT”
- Default currency select LKR
- Scroll Down → Click on Show Extra field option
- Change custom field name TIN and enter TIN number in beside text box
- Click on Save
2Add Purchaser Details as in the VAT Registration
- Enter Purchaser Company Name which will display as the Purchaser Name;
- Enter address of the Purchaser;
- Enter Purchaser Telephone Number
- Select Taxation type “VAT”
- Enter TIN number of Purchase
- Enter Other details but it is optional
- Click on Save
3Change Invoice field Heading
- Change Tax Invoice Title “Tax Invoice”
- Place of supply to Place of Supply
- Description to Description of Supply
- Total to Value of Supply
- Original Copy Label to Original
- Duplicate Copy Label to Duplicate
- Click on Save.
4Change Prefix and Date format
- Select Date format MM-DD-YY
- Select Document Prefix Saperator like “-” “/”
- Click on Save.
Create Sri Lanka VAT Tax Invoices Step-by-Step
Follow this simple workflow to create, preview, save, print, download, email or share VAT tax invoices.
Login in Sleek bill
Go to Invoices Tab Click on new button, Select Tax Invoice
Enter Prefix
Examle. 26JUNCol invoice number will take Automatically. format year-month-prefix-separator-invoice number
Enter Customer Details
Add purchaser information including TIN, business name, address, and contact details.
Select Due date
Select Due date till invoice valid
Add Product or Service Information
Select product, enter quantities, unit prices, tax come automatically.
VAT Calculation
The system automatically calculates taxable values, VAT amounts, and invoice totals.
Additional Information
Enter Additional Information in term Field
Generate Invoice
Click on preview and save
Save, Print, or Share
Click on print tick original and duplicate click on print, Or you can Download, email, or send through link or store invoices securely for future reference.
Billing effortlessly comes at a small price
And helps you work smarter, serve customers better, and grow your business every day.
Free Forever
- Limit of 10 documents /month
- Sleek Bill branding on issued documents
- Sri Lanka VAT-ready billing
- VAT & Custom Tax Options
- Cess tax option
- Basic VAT reports
- Basic GSTR1 & GSTR3B export
- Customizable labels
- Limited support
Premium Business Plan
- Unlimited documents
- No Branding on Documents
- A4, A5 & A6 template
- Sri Lanka VAT & custom tax support
- VAT Tax Summary Report
- Input VAT & Output VAT Reports
- Cess tax option (% + fixed)
- VAT-inclusive & VAT-exclusive pricing
- Configurable VAT rates and tax rules
- Inventory Managment
- Credit & Debit Notes
- Transport Labels (Waybill, Challan, Vechicle etc)
- Document Labels (Original, Duplicate, Triplicate)
- Output VAT & Input VAT Reports
- VAT Tax Summary Report
- VAT Tax Summary Report
- VAT Return & Schedule Data Export
- Taxable, Zero-Rated & Exempt Supply Reporting
- VAT Adjustment & Credit/Debit Note Reporting
- Export & Import functionality
- 2 & 3 inch Thermal Print
- Tax reports
- Email Support
Multi User Plan
- All Premium Plan Features
- Add upto 5 users
- Sri Lanka VAT & custom tax support
- VAT-inclusive & VAT-exclusive pricing
- Configurable VAT rates and tax rules
- Transport label
- Data Security & Auto Backup
- Bank Details on Documents
- Complex Tax Options
- Inventory Reports
- Tax Reports
- UPI QR Code
- Bank Book
- Profit & Loss
- Item Stock Ledger
- Item Amount Ledger
- Inventory Book
- Cash Book
- Client/Vendor Ledger
- Client & Vendor Statement
- Delivery Challan
- Purchase Bill Entry
- Purchase Order
- Advance Reports
- Expenses
- Dedicated Priority Support
Why Use VAT-Compliant Tax Invoice Software?
Manual tax invoice preparation can become difficult when businesses handle multiple customers, branches and transactions. Software helps standardize the process.
Tax Invoicing Made Easier, Faster and More Accurate for Sri Lankan Industries
Tax laws are changing ever more rapidly, requiring businesses to maintain easy-to-use systems capable of responding with flexibility and agility. Our solutions enable your business to continually be audit-ready, every minute of every hour.
Wholesalers & Retailers
Create VAT tax invoices for frequent customer transactions, product sales and payment records.
Manufacturers
Maintain structured tax invoice records for goods supplied, delivery dates, quantities and VAT totals.
Distributors
Support branch, project, unit and subsidiary invoice numbering for organized business documentation.
Service Providers
Generate professional tax invoices for services with description, value of supply and VAT amount.
Exporters
Keep business documentation clear and accessible for transactions, customers and future compliance needs.
Accountants
Help clients maintain organized VAT invoice records, purchaser details and audit-ready tax documentation.
Frequently Asked Questions
Helpful answers for businesses preparing Sri Lanka VAT-compliant tax invoices.
What is Sri Lanka VAT-Compliant Tax Invoice Software?
It is invoicing software that helps VAT-registered businesses create professional tax invoices with supplier details, purchaser details, TIN, invoice information, VAT values and proper copy labels.
What title should appear on the invoice?
The document must clearly display the title "TAX INVOICE" prominently at the top of the invoice.
What details are required for the supplier?
Supplier details include TIN, business name, business address, telephone number and optional email.
What details are required for the purchaser?
Purchaser details include TIN, name, address, telephone number and optional email.
Can VAT be calculated automatically?
Yes. The system automatically calculates taxable values, VAT amounts and invoice totals after adding product or service details.
How long should invoice records be retained?
The supplier and purchaser must retain tax invoice records for at least five years from the end of the taxable period.
Can invoices be printed as original and duplicate?
Yes. The invoice copy labels can be configured as Original and Duplicate for proper printing and record maintenance.
Can invoices be downloaded or shared?
Yes. Invoices can be downloaded, emailed, sent through link, printed or stored securely for future reference.
Getting your VAT invoicing ready to go?
Begin issuing professional tax invoices with VAT and keep your business documentation organized. Talk to us now to find out how we can help your business expand using our invoicing solution.
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