Business Tax in Sri Lanka Explained
A simple guide to how business income tax may be estimated in Sri Lanka, including sole proprietor income, self-employment profit, company profit, standard company tax, special tax rates, VAT, SSCL, expenses, and why turnover is not the same as taxable profit.
This guide uses publicly available Sri Lankan tax, IRD, Customs, Provincial Revenue, or government information available at the time of writing. Tax rates, thresholds, forms, exemptions, valuation treatment, import rules, and filing requirements can change. Always confirm final amounts with the relevant authority or a qualified professional before making financial, tax, legal, property, import, or business decisions.
What is business tax?
Business tax is a broad term. It can refer to income tax on business profit, company income tax, VAT, SSCL, withholding taxes, PAYE/APIT responsibilities for employees, and other tax obligations depending on the business structure.
For a small business owner, freelancer, sole proprietor, partnership, or company, the first important idea is simple: tax is normally estimated on profit or taxable income, not just total sales.
Turnover is not the same as profit
Many people confuse sales with profit. Turnover is the total amount your business earns from sales or services. Profit is what remains after deducting business expenses.
For example, if your business has LKR 20 million in annual sales and LKR 14 million in deductible business costs, the simple business profit is LKR 6 million.
Common business structures
The tax treatment can differ depending on whether the business is operated by an individual, partnership, private limited company, public company, non-profit organization, or another structure.
| Business structure | Plain-English meaning | Tax point to remember |
|---|---|---|
| Sole proprietor | An individual carries on business under their own name or business name. | Business profit may form part of personal income tax. |
| Freelancer / self-employed person | An individual earns income from services or independent work. | Profit after expenses may be included in personal income tax. |
| Partnership | Two or more persons carry on business together. | Partnership rules and partner-level tax treatment may apply. |
| Private limited company | A separate legal company registered under company law. | Company income tax may apply to taxable company profit. |
| PLC / larger company | A larger incorporated business or public company. | Corporate tax, reporting, audit, VAT, SSCL, and other obligations may be more complex. |
Sole proprietor or freelancer business income
If you operate as a sole proprietor or self-employed individual, your business profit may be included with your other personal income. This can include salary, rental income, fixed deposit interest, and other taxable income.
The simple flow is usually to estimate business income, deduct business expenses, calculate profit, combine it with other income, apply personal relief where eligible, and then use the individual income tax bands.
| Step | Simple explanation |
|---|---|
| 1. Add business revenue | Include income from goods sold or services provided. |
| 2. Deduct business expenses | Deduct eligible business costs, not personal expenses. |
| 3. Calculate business profit | Revenue minus deductible expenses. |
| 4. Combine with other income | Add salary, rent, bank interest, or other taxable income where relevant. |
| 5. Apply tax bands | Estimate personal income tax using the applicable individual income tax structure. |
Company income tax
If the business is a company, such as a private limited company, income tax is usually estimated on the company’s taxable income. A simple calculator may use the standard company tax rate as a first estimate.
For many ordinary companies, the simple standard company tax rate used for an estimate is 30%. Some businesses can have special rates depending on the type of income, industry, and applicable law.
| Company taxable profit | Simple standard rate | Estimated company income tax |
|---|---|---|
| LKR 1,000,000 | 30% | LKR 300,000 |
| LKR 5,000,000 | 30% | LKR 1,500,000 |
| LKR 10,000,000 | 30% | LKR 3,000,000 |
| LKR 25,000,000 | 30% | LKR 7,500,000 |
This is only a simplified estimate. Actual company tax can depend on allowable deductions, disallowed expenses, losses, capital allowances, related-party transactions, special rates, foreign income, exemptions, and tax credits.
Special company tax rates
Not every company is taxed in the same way. Some income types and industries may have special tax rates. For example, certain service export or foreign-source income may have a lower rate, while betting, gaming, liquor, or tobacco-related profits may have a higher rate.
| Income or business type | Simple rate shown in IRD chart | Plain-English note |
|---|---|---|
| Standard company taxable income | 30% | Used for ordinary companies unless special rates apply. |
| Certain service income used outside Sri Lanka and remitted through a bank | 15% | Special conditions apply; do not assume every foreign client payment qualifies. |
| Certain foreign-source income earned in foreign currency and remitted through a bank | 15% | Special conditions apply; confirm before using the lower rate. |
| Betting and gaming profits | 45% | Higher special rate. |
| Manufacture and sale, or import and sale, of liquor or tobacco products | 45% | Higher special rate. |
| Company gains from realization of investment assets | 30% | Separate treatment may apply depending on the asset and facts. |
Example: simple company tax estimate
Here is a simple example for a normal company using the standard 30% rate.
| Item | Calculation | Amount |
|---|---|---|
| Annual business income / sales | Amount entered | LKR 20,000,000 |
| Business expenses | Amount entered | LKR 14,000,000 |
| Estimated business profit | 20,000,000 − 14,000,000 | LKR 6,000,000 |
| Standard company tax rate | 30% | 30% |
| Estimated company income tax | 6,000,000 × 30% | LKR 1,800,000 |
| Estimated profit after income tax | 6,000,000 − 1,800,000 | LKR 4,200,000 |
This does not include VAT, SSCL, payroll obligations, dividend tax, tax credits, losses, or special adjustments.
Example: higher special company tax rate
Some companies may fall under higher special rates. For example, if a company’s taxable profit falls under a 45% special-rate category, the estimate changes significantly compared with the standard 30% company rate.
| Company taxable profit | Rate used | Estimated company income tax | Estimated profit after income tax |
|---|---|---|---|
| LKR 6,000,000 | 30% | LKR 1,800,000 | LKR 4,200,000 |
| LKR 6,000,000 | 45% | LKR 2,700,000 | LKR 3,300,000 |
This shows why choosing the correct company tax rate matters. The same taxable profit can produce a very different tax estimate depending on whether the standard rate or a special rate applies.
VAT and SSCL are separate from income tax
A common mistake is to think that paying income tax means VAT and SSCL do not matter. These are separate tax areas. A business may have income tax obligations and also VAT or SSCL obligations if the relevant thresholds and rules apply.
This is why a business with high sales but low profit may still have turnover-based obligations, while a business with strong profit may have income tax obligations even if VAT or SSCL does not apply.
What expenses can affect business profit?
Business expenses can reduce taxable profit only if they are allowed under tax rules and properly supported. A business owner should keep records, invoices, receipts, bank statements, and proper accounting entries.
| Expense category | Examples | Practical note |
|---|---|---|
| Cost of goods sold | Stock, raw materials, packaging, direct production costs. | Important for trading and manufacturing businesses. |
| Operating expenses | Rent, utilities, internet, repairs, office costs, transport. | Should be business-related and documented. |
| Staff costs | Salaries, EPF/ETF, allowances, payroll costs. | Payroll tax/APIT obligations may also matter. |
| Professional fees | Accounting, audit, legal, consulting, company secretarial fees. | Often important for compliance and filing. |
| Finance costs | Loan interest, bank charges, lease interest. | Deductibility can depend on tax rules and documentation. |
Tax already paid or deducted
A business may have tax already deducted or paid during the year. This can include withholding tax, advance payments, installment payments, or tax credits depending on the situation.
A simple calculator may include a field for “tax already paid” so users can estimate a rough balance. But this should not be treated as a final return calculation.
| Item | Plain-English meaning |
|---|---|
| Tax before credits | The estimated tax based on taxable profit and the selected rate. |
| Tax already paid | Payments, deductions, or credits already made during the year. |
| Balance estimate | Tax before credits minus tax already paid. |
Why business tax can become complicated
A simple estimate is useful for planning, but actual business tax can become complicated quickly. This is especially true for companies, VAT-registered businesses, importers, exporters, businesses with employees, or businesses with multiple income streams.
- capital allowances and depreciation treatment,
- losses and loss relief,
- related-party transactions,
- director salaries and dividends,
- loans to shareholders or directors,
- VAT input claims and exemptions,
- SSCL liable turnover categories,
- foreign currency income,
- service export rate conditions,
- withholding tax deductions,
- employee APIT, EPF, and ETF obligations,
- audit and company return requirements, and
- industry-specific tax treatments.
Use the calculator
The Business Tax Calculator helps estimate simple business profit, income tax, profit after tax, effective tax rate, and possible balance after tax already paid. It is designed for rough planning before speaking with an accountant or tax professional.
If your company may fall under a special tax category, enter the relevant special company tax rate manually in the calculator. For example, ordinary company estimates may use 30%, while certain special-rate categories may use 15% or 45% depending on the facts and IRD rules.