MRA
Common Tax Filing Mistakes in Mauritius (2026) and Expert Tips to Avoid Them
The 2025/26 Budget rewrote personal income tax in Mauritius. Here are the errors that now trigger MRA penalties — and exactly how to avoid each one.
1. Introduction to Tax Filing Challenges in Mauritius
1.1 Why accurate tax filing matters — more than ever in 2026
Filing your income tax in Mauritius has never been more important to get right. The 2025/26 National Budget brought the most significant overhaul to personal income tax in years — a completely restructured rate system, abolished deductions, new contributions for high earners, expanded fringe benefit valuations, and tightened audit windows.
Mistakes such as applying the wrong tax rates, claiming abolished deductions, or misreporting fringe benefit income can now trigger a formal assessment, a penalty, or interest charges that compound month after month.
The Mauritius Revenue Authority (MRA) has also been granted stronger enforcement powers under the Finance Act 2025, including the right to raise assessments based on its best judgement where it is not satisfied with the adequacy or correctness of a taxpayer's records. When the MRA cross-references your return against your employer's Return of Employees (ROE) and finds inconsistencies, you may receive a query — or worse, an audit notice — before you even know something went wrong.
Every mistake in this guide is entirely preventable. Understanding the rules — including what changed on 1 July 2025 — is your first and most powerful line of defence.
1.2 Who this guide is for
- Employees taxed under Pay As You Earn (PAYE) who must file an Annual Income Tax Return by 15 October each year
- Self-employed individuals paying tax quarterly under the Current Payment System (CPS)
- Individuals with multiple income streams — salary plus rental income, dividends, freelance work, or investment returns
- High-income earners now subject to the new Fair Share Contribution from 1 July 2025
- Employers responsible for filing a Return of Employees (ROE) by 15 August each year
1.3 The highest-risk mistakes for the 2025 income year
| Mistake | Risk | 2025 Status |
|---|---|---|
| Applying old 11-bracket tax rates | Critical | New 3-bracket system from 1 July 2025 |
| Claiming household employee deduction | Critical | Abolished from 1 July 2025 |
| Claiming Angel Investor Allowance | Critical | Abolished from 1 July 2025 |
| Claiming any charity donation deduction | High | Electronic only, capped at Rs 100,000 |
| Under-declaring car fringe benefit | High | All rates increased, new categories added |
| Missing Fair Share Contribution | High | New 15% levy for income > Rs 12M |
| Filing after 15 October deadline | High | Late penalty + interest (rates revised) |
| Forgetting housing loan income cap | Medium | Disallowed if total income > Rs 4M |
| Underpaying CPS quarterly instalments | Medium | 5% penalty + 0.25%/month interest |
| Incomplete supporting documents | Medium | MRA may issue best-judgement assessment |
2. Mistake #1 — Applying the wrong tax rates
2.1 The 2024 vs 2025 tax rate change
The old system had eleven progressive brackets ranging from 0% on the first Rs 390,000 up to 20%. As of 1 July 2025, this has been completely replaced with a simplified three-bracket system, with the tax-free threshold rising from Rs 390,000 to Rs 500,000.
A salaried employee earning Rs 800,000 per year now pays 0% on the first Rs 500,000 and 10% on the remaining Rs 300,000 — a total tax of just Rs 30,000, versus a considerably higher figure under the old rates.
Solution: Always verify which income year your return covers before calculating tax. For income received on or after 1 July 2025, apply only the three-bracket system, or use the MRA e-Filing portal which applies the correct rates automatically.
2.2 The new Fair Share Contribution
For individuals earning annual net income exceeding Rs 12 million (inclusive of dividend income from domestic companies and co-operative societies), the Finance Act 2025 introduces a new 15% Fair Share Contribution (FSC), collected under PAYE. It applies from 1 July 2025 through 30 June 2028 and cannot be offset against any tax credit.
Dividends received from global business entities, Foundations and Trusts are excluded from both the Rs 12 million threshold and the leviable income calculation.
3. Mistake #2 — Claiming abolished or modified deductions
3.1 Household Employee Deduction — abolished
The Rs 30,000 deduction for employing household staff no longer exists for income earned from 1 July 2025 onwards. Claiming it on your 2025 return is a false declaration that can trigger a best-judgement assessment.
3.2 Angel Investor Allowance — abolished
Fully abolished under the 2025/26 Budget — no replacement, no transition period. Do not claim it on any return covering income from 1 July 2025 onwards.
3.3 Charitable donations — electronic only, capped at Rs 100,000
- Donations must be made electronically (bank transfer, online payment, card). Cash donations are no longer deductible.
- Maximum deduction is Rs 100,000 per income year, regardless of amount donated.
- Keep clear digital records — bank statements, receipts, transaction confirmations.
3.4 Housing loan interest relief — new income cap
The relief is not allowable where the individual or their spouse derives total income — defined as net income plus interest and dividends received — exceeding Rs 4 million in the income year starting 1 July 2025.
3.5 New deductions — don't miss these
- Fee-paying private schools: additional deduction of fees paid or Rs 60,000, whichever is lower.
- Employment of a carer: wages paid to carers or Rs 30,000, whichever is lower, provided CSG and NSF contributions are paid.
4. Mistake #3 — Incorrectly reporting fringe benefits
The company car benefit is one of the most frequently mis-declared items on Mauritian tax returns. From 1 October 2025 the MRA moved to value-based categories for high-cost vehicles and added a specific category for electric cars. A vehicle worth over Rs 3 million now carries a monthly taxable benefit of Rs 25,000 to Rs 50,000.
Solution: Double-check your Statement of Emoluments against the MRA-mandated car benefit schedules. If your vehicle is electric or cost more than Rs 3 million and your statement still reflects the old rates, query it with payroll before filing.
5. Mistake #4 — Missing tax deadlines
5.1 Key filing deadlines for 2025
| Obligation | Deadline | Who it applies to |
|---|---|---|
| Annual Income Tax Return (ITR) | 15 October 2025 | All individuals with taxable income |
| Return of Employees (ROE) | 15 August 2025 | All employers |
| CPS Quarter 1 (Jul–Sep) | End of December | Self-employed |
| CPS Quarter 2 (Oct–Dec) | 31 March | Self-employed |
| CPS Quarter 3 (Jan–Mar) | End of June | Self-employed |
| Employee Declaration Form (EDF) | Start of income year | All employees |
5.2 Penalties for late submission — 2024 vs 2025
| Penalty / Interest | 2024 rate | 2025 rate |
|---|---|---|
| Late payment penalty (individuals in business) | 5% | 2.5% |
| Late payment penalty (individuals not in business) | 2% | 1% |
| Monthly interest on unpaid tax | 0.5% | 0.25% |
| Late ROE submission penalty | Rs 5,000/month (max Rs 20,000) | Unchanged |
5.3 The Tax Arrears Settlement Scheme (TASS)
Under the Finance Act 2025, TASS has been extended. Taxpayers with arrears as at 30 June 2025 may apply for a full waiver of penalties and interest, provided the application is submitted by 30 November 2025 and the arrears are paid in full by 31 March 2026.
6. Mistake #5 — Incomplete or missing supporting documents
The MRA requires strict proof for all claims. Under the Finance Act 2025, the Director-General can raise a best-of-judgment assessment if your records are deemed inadequate, shifting the burden of proof onto you. Keep all supporting documents for at least five years.
Complete document checklist
- Statement of Emoluments (SOE) from your employer
- CPS quarterly statements and business income records (self-employed)
- Rental income receipts and lease agreements
- Dividend and interest income certificates
- Dependent details — NIC numbers, proof of relationship, dependent's income
- Medical and health insurance premium receipts paid by you
- Housing loan statement showing interest paid
- Solar, rainwater and EV charger invoices with proof of payment
- Charitable donation receipts showing electronic payment only
- Private school fee receipts for dependent children
- Carer payroll records and CSG/NSF contribution receipts
- Car registration and value documentation (especially for cars > Rs 3M)
The MRA's new powers
- Demand access to computers and electronic records — non-compliance carries fines up to Rs 200,000 and up to 5 years imprisonment.
- Override inadequate records and raise formal assessments.
- Direct-source information from banks, employers and financial institutions.
7. Mistake #6 — Incorrect income reporting
7.1 Underreporting income
Underreporting income is the most serious category of tax error because it can cross the line into fraud. The MRA cross-references declarations with employer ROE filings, banking data, and third-party records.
- Bonus payments and special allowances — taxable emoluments.
- Overtime payments — fully taxable.
- Freelance or consulting income — taxable even if received in cash.
- Rental income — taxable after allowable deductions.
- Tips and gratuities — taxable if received through an employer-managed pool.
7.2 Overstating deductions or reliefs
- Claiming the full dependent deduction when a dependent's income exceeds the threshold.
- Claiming the tertiary education additional deduction where tuition fees fall below Rs 34,800/year.
- Claiming transport allowance under the private car option without the vehicle being registered in your name.
- Claiming solar or rainwater investment allowances without retaining invoices.
How to avoid these mistakes
The MRA e-Filing portal provides built-in validation checks that identify common errors before submission, auto-calculates certain fields, and keeps a history of your submissions.
- Pre-calculate tax liability with an online calculator before filing.
- Cross-reference your Statement of Emoluments with pay slips and receipts.
- Consult a professional accountant for multiple income streams, business income, large portfolios or major life changes.
- Set calendar alerts three weeks before each deadline.
Proper tax management is not just about meeting obligations — it's an investment in your financial well-being.
Need help preparing or reviewing your return? Anexa Biz can guide you through the 2025/26 rules and file with confidence. Contact us to get started.