Tax Guide for Malaysians Working in Singapore: What You Need to Declare

Your first payslip in Singapore comes with a question most new hires only think about months later: which country actually taxes this money?

The short answer is reassuring — you will almost never pay tax twice on the same salary. But Singapore income tax for Malaysian workers follows different rules from what you are used to back home, and getting your tax residency status wrong can cost you real money. Here is what you need to know, and what you actually need to declare on each side of the Causeway.

First things first: the 183-day rule

Everything in Singapore income tax starts with one number: 183. If you stay or work in Singapore for 183 days or more in a calendar year, Inland Revenue Authority of Singapore (IRAS) treats you as a Singapore tax resident for that year. Residents pay progressive tax rates starting from 0% and can claim personal reliefs, which usually results in a much lower bill.

A few practical points on the 183-day rule Malaysia-Singapore workers should note:

• All physical days in Singapore count — weekends, public holidays and leave included, not just working days.
• If you hold a work pass valid for at least one year, IRAS treats you as a tax resident upfront, with your status reviewed at tax clearance when you leave the job.
• Started work mid-year? If your employment straddles two calendar years and your total stay is at least 183 days, IRAS’s two-year administrative concession treats you as a resident for both years.

Meanwhile, Malaysia applies its own residency test — generally 182 days of physical presence in Malaysia. Spend most of your year in Singapore and you will typically be a Singapore tax resident and a Malaysian non-resident. It is possible to meet both countries’ tests in the same year and become a dual resident; the Malaysia–Singapore double taxation agreement contains tie-breaker rules for exactly this situation, so income tax for a Malaysia-Singapore dual resident is settled by treaty rather than taxed twice.

How Singapore taxes your salary

Your tax bill in Singapore depends entirely on your residency status for that Year of Assessment:

For most Malaysians working full-time in Singapore, resident rates apply — and because the first S$20,000 of chargeable income is taxed at 0%, many entry-level workers pay very little Singapore income tax at all.

Filing is straightforward: e-file via the IRAS myTax Portal between 1 March and 18 April each year. Your employer submits your income details electronically, so much of your return is pre-filled.

Do I declare Singapore income in Malaysia?

This is the question that worries Malaysians most, so let us be precise about it.

Malaysia taxes on a territorial basis — salary you earn for work performed in Singapore is foreign-sourced income (FSI) from Malaysia’s point of view. Under Budget 2025, the government extended the FSI tax exemption for resident individuals until 31 December 2036, provided the income has been subjected to tax in its country of origin. Since your Singapore salary is taxed by IRAS, it meets this condition. In practice, this means you will not pay Malaysian tax on your Singapore salary, even when you transfer it home.

Two important caveats before you close your LHDN file:

• If you remain a Malaysian tax resident and file a return, you must still declare Singapore income in Malaysia under the exempt FSI disclosure in your tax form — exemption is not the same as invisibility. Keep your IRAS Notice of Assessment as proof the income was taxed in Singapore.
• The exemption covers your foreign income only. Anything you still earn in Malaysia — rental from a property in Johor Bahru, freelance work performed in Malaysia — remains taxable by LHDN as usual.

One trap to avoid: many older articles still say the FSI exemption ends in 2026. That deadline was extended by ten years, so do not make financial decisions based on outdated pages.

Three common scenarios

1. Full-timer in Singapore, home on weekends. You will comfortably cross 183 days, making you a Singapore tax resident. You pay IRAS at resident rates and owe no Malaysian tax on that salary. If you have no Malaysian-sourced income, you generally have nothing to file with LHDN.
2. JB commuter crossing the Causeway daily. Your salary is earned from employment exercised in Singapore, so IRAS taxes it — and your working days in Singapore count toward the 183-day test, so most daily commuters qualify for resident rates. Your Malaysian side stays simple unless you have Malaysian income.
3. Arrived mid-year. Say you started work in August. You may fall short of 183 days in your first calendar year, but the two-year administrative concession can still secure resident rates for both years — check your eligibility before accepting a non-resident assessment.

Keep these documents

Cross-border tax is mostly a paperwork discipline. Hold on to:

• Your IRAS Notice of Assessment each year — your proof of tax paid in Singapore.
• Payslips and your Form IR8A (the income statement your Singapore employer files).
• Records of transfers home, in case LHDN asks when and how much foreign income you remitted.

Key dates: Singapore e-filing closes 18 April; Malaysia’s e-filing deadline for individual returns (Form e-BE) typically falls on 15 May.

Conclusion

For most Malaysians working in Singapore, the tax picture is simpler than it first appears: Singapore taxes your salary, Malaysia exempts it until at least 2036, and the 183-day rule decides how much you pay. What matters is knowing your residency status, filing on time in the right country, and keeping proof that your income was taxed.

The other half of the equation is keeping more of what you earn when you move money home. Sending your SGD salary back at poor rates can quietly cost more than your annual tax bill — which is why it pays to transfer funds between Singapore and Malaysia at low fees and competitive exchange rates, and to hold both currencies in a multi-currency account so you convert on your own schedule, not your bills’.

Want to learn more about logistics and preparation when migrating to Singapore? Check out the Malaysia to Singapore guides here.

💡 This article is for general information only and does not constitute tax advice. Confirm your individual position with IRAS, LHDN or a licensed tax professional.