Corporate Tax Mauritius 2026: Rates, MRA Deadlines & Rules

The cornerstone of the Mauritius fiscal system is the 15% corporate tax rate applicable to the majority of domestic and Global Business companies. This flat rate applies to 'chargeable income,' which is defined as gross income minus allowable deductions and exemptions. In 2026, specific incentives remain for the manufacturing and export sectors, where companies involved in the export of goods may benefit from a reduced effective rate of 3% on income derived from those exports.

Additionally, it is crucial to factor in the Corporate Social Responsibility (CSR) contribution. Companies are required to contribute 2% of their chargeable income from the preceding year toward social and environmental projects. While 75% of this must be remitted directly to the MRA for the National CSR Foundation, the remaining 25% can often be allocated to approved internal CSR initiatives, provided they align with government priority areas such as poverty alleviation and education.

Tax planning in Mauritius revolves around identifying 'allowable expenses.' Under the Income Tax Act, any expenditure incurred 'exclusively in the production of gross income' is generally deductible. This includes staff salaries, rent for business premises, and utility costs. For 2026, the MRA continues to support digitalization; therefore, many software-as-a-service (SaaS) subscriptions and cybersecurity investments are fully deductible.

Capital Allowances (Depreciation) are another vital area. While accounting depreciation is not tax-deductible, businesses can claim tax depreciation at rates prescribed by the MRA. For example, machinery and plant typically attract a 20% to 50% annual allowance. Intellectual property and specialized electronic equipment may also qualify for accelerated depreciation. At Anexa.mu, we assist businesses in performing detailed tax computations to ensure all eligible capital allowances are claimed, preventing overpayment of tax.

The Mauritius Revenue Authority operates on a strict timeline. For most companies, the deadline to file the Annual Return and pay any remaining tax is six months after the end of their financial year. For instance, if your financial year ends on June 30, 2026, your return and payment must be finalized by December 31, 2026.

However, the Advance Payment System (APS) is mandatory for companies with a turnover exceeding MUR 10 million. Under APS, you must submit quarterly statements and pay tax based on either the previous year's performance or an estimate of the current year's profits. Failing to meet these deadlines results in a 5% penalty and interest of 0.5% per month. Utilizing a platform like Payroll.mu can help ensure your payroll-related taxes (which impact your overall tax position) are always computed accurately and ahead of schedule.

In 2026, Mauritius remains fully compliant with the OECD’s Base Erosion and Profit Shifting (BEPS) framework. This means that Substance Requirements are non-negotiable for companies wishing to benefit from tax exemptions or reduced rates. To demonstrate substance, a company must be managed and controlled in Mauritius, employ a reasonable number of qualified persons locally, and incur a minimum level of operating expenditure on the island.

Global Business Companies (GBCs) often utilize the Partial Exemption Regime, which allows for an 80% exemption on specific types of income, such as foreign dividends and interest, provided they meet the MRA’s substance criteria. This effectively brings the tax rate down to 3% for qualifying income streams. Staying on the right side of these regulations is essential to avoid being reclassified or penalized during an MRA audit.

The MRA has transitioned almost entirely to digital processes. All corporate tax returns (Form IT7) must be filed through the MRA e-Filing system using a valid Taxpad or MNS (Mauritius Network Services) credentials. This digital shift has reduced manual errors but increased the MRA’s ability to conduct data matching between VAT, PAYE, and Corporate Tax filings.

Business owners must ensure that their internal accounting records match what is reported online. Discrepancies between the turnover reported in VAT returns and the turnover reported in the annual corporate tax return are common triggers for a 'Desk Audit.' We recommend that businesses perform a reconciliation at the end of each quarter to ensure total synchronization across all tax heads. QuickFocus.biz and Anexa.mu provide the tools and professional oversight needed to maintain this level of digital accuracy.