VAT invoices in Sri Lanka: a practical checklist
The details a VAT invoice in Sri Lanka normally needs, how to lay out tax per line, and a worked invoice example at 18%.
Key facts
| Place | Sri Lanka |
|---|---|
| Tax | VAT |
| Standard rate on file | 18% |
| Multiply net price by | 1.18 |
| Tax share of a gross price | 15.25% |
| Currency | LKR |
Details most tax authorities expect
A valid tax invoice usually shows the seller name, address and tax registration number, the buyer details, a unique sequential invoice number, the invoice date, a clear description of each item, quantity and unit price, the rate applied and the amount of tax, and the total due. Exact requirements differ, so confirm the list for Sri Lanka.
Worked example
Here is the calculation with sample figures. Change any number in the Sri Lanka Invoice VAT Calculator to run your own.
| Quantity | 10 |
| Unit price (net) | LKR50.00 |
| Tax rate (%) | 18% |
| Net amount | LKR500.00 |
|---|---|
| Tax | LKR90.00 |
| Total | LKR590.00 |
Net, tax and gross on every invoice
Show the net amount, the VAT at 18% and the gross total separately. Customers who are registered need that breakdown to reclaim the tax, and it makes your own reconciliation straightforward.
Credit notes
If you need to correct an invoice, issue a credit note that references the original rather than editing or deleting it. The credit note reverses the tax as well as the net amount.
Quick reference at 18%
Common amounts in Sri Lanka, worked both ways: adding tax to a net price, and extracting it from a price that already includes tax.
| Amount | Tax on net amount | Gross (net + tax) | Net if amount includes tax |
|---|---|---|---|
| LKR10.00 | LKR1.80 | LKR11.80 | LKR8.47 |
| LKR50.00 | LKR9.00 | LKR59.00 | LKR42.37 |
| LKR100.00 | LKR18.00 | LKR118.00 | LKR84.75 |
| LKR250.00 | LKR45.00 | LKR295.00 | LKR211.86 |
| LKR500.00 | LKR90.00 | LKR590.00 | LKR423.73 |
| LKR1,000.00 | LKR180.00 | LKR1,180.00 | LKR847.46 |
| LKR5,000.00 | LKR900.00 | LKR5,900.00 | LKR4,237.29 |
How Sri Lanka compares
Standard rates on file for other countries. A difference of a few points matters most on high-value purchases and on cross-border sales.
| Place | Rate on file | Compared with 18% |
|---|---|---|
| South Africa | 15% | lower |
| South Korea | 10% | lower |
| Spain | 21% | higher |
| Sweden | 25% | higher |
| Switzerland | 8.1% | lower |
| Taiwan | 5% | lower |
Using the calculator step by step
- Open the Sri Lanka Invoice VAT Calculator.
- Type your figures into the numbered lines. Results update as you type.
- Check the rate field. It starts at 18%; change it if a reduced rate, local surcharge or exemption applies to you.
- Read the result on the receipt panel, and use the formula shown under it if you need to explain the figure to a client or colleague.
Key terms
- Marginal rate
- The rate applied to the next unit of income. It decides how much of a raise or a deduction you keep.
- Taxable income
- Income left after allowances and deductions, on which the tax rates are applied.
- Zero rate
- A rate of 0% on a taxable supply. Unlike an exemption, the seller can usually still reclaim tax on costs.
- Tax credit
- An amount subtracted directly from the tax bill, worth its full face value.
- Standard rate
- The rate that applies to most goods and services unless a specific reduced rate, zero rate or exemption applies.
Common mistakes to avoid
- Leaving out the tax registration number.
- Reusing or skipping invoice numbers.
- Showing only a tax-inclusive total.
Run your own numbers. The Sri Lanka Invoice VAT Calculator updates as you type and shows the formula it uses.
Frequently asked questions
Do I need to show VAT separately on invoices in Sri Lanka?
For business customers it is normally required, and it is good practice in any case.
How is VAT calculated on an invoice with many items?
Multiply each line by its quantity and unit price, apply 18%, and total the lines, or apply the rate to the invoice total, following one method consistently.
This article is general information for planning, not tax advice. Rates and rules change; confirm with your tax authority or a qualified adviser.