Certificate of Residence Singapore Individual: How Expats Prove Tax Residency

Short answer: A certificate of residence for a Singapore individual is an IRAS letter confirming that you are a Singapore tax resident, which a foreign tax authority may ask for before granting treaty relief. Singpass holders can apply through IRAS, and IRAS says processing takes 2 to 3 weeks (per IRAS, as at 6 November 2026).

This article is general information only and is not legal, tax or immigration advice. For matters needing legal advice, we work with a panel of experienced Singapore law firms.

What is a certificate of residence for a Singapore individual?

It is a letter from IRAS certifying that you are a tax resident of Singapore. You show it to a foreign tax authority to prove where you are resident for tax purposes, so that you can claim the benefits of a double tax agreement.

IRAS explains the logic on its COR page. If you earn income from another country or jurisdiction, you may be taxed there. Where Singapore has a DTA with that place, you may claim tax benefits, but to enjoy them you need to submit a COR to the foreign tax authority to prove you are a Singapore tax resident. A DTA is an agreement that relieves double taxation of income earned in one country by a resident of the other. Depending on the treaty, the other country may give a tax credit or an exemption. IRAS states that non-tax residents do not enjoy these benefits.

In practice, the people who ask for a COR are expats who still have income from home: rental income from a property, dividends, a pension, a consultancy fee or a bonus from a former employer. If your home country asks for proof that you live in Singapore for tax purposes, this is the document. For the wider picture on how Singapore taxes expats, read our guide to Singapore personal income tax for expats 2026.

Who qualifies for a Singapore certificate of residence?

Only individuals who are Singapore tax residents qualify. IRAS describes the COR as certifying that you are a tax resident, and its physical application form is titled for individual tax residents only.

The IRAS tax residency page (as at 6 November 2026) sets out who counts as a resident for a Year of Assessment:

Your situation	Tax residency under IRAS rules
Singapore Citizen or Permanent Resident who normally resides in Singapore, apart from temporary absences	Tax resident
Foreigner who stayed or worked in Singapore for at least 183 days in the previous calendar year	Tax resident
Foreigner who stayed or worked in Singapore continuously for 3 consecutive years	Tax resident for all 3 years (administrative concession)
Foreign employee who worked in Singapore across 2 calendar years, with total stay (including time immediately before and after employment) of at least 183 days	Tax resident for both years (concession excludes company directors, public entertainers and professionals; applies to those who entered Singapore from 1 January 2007)
Foreigner in Singapore for less than 183 days and not covered by a concession	Non-resident

IRAS adds that foreigners issued with a work pass valid for at least 1 year are treated as tax residents, but IRAS reviews that status at the point of tax clearance when employment ends. If your stay is under 183 days, you are regarded as a non-resident. Our detailed explainer on the 183-day rule and common mistakes covers the day-counting traps.

How do I apply for a certificate of residence through IRAS?

The route depends on your profile. Singpass holders use the QR code or online COR application, while foreign employees without Singpass submit an XLSX application form by email. The steps below follow the IRAS page as at 6 November 2026.

1. Confirm that you are a tax resident under the table above, and that Singapore has a DTA with the country asking for the certificate.
2. Check your profile on the IRAS COR page: employee who is a Singapore Citizen or PR; self-employed, sole proprietor or partner; or foreign employee.
3. If you have Singpass, scan the QR code on the IRAS page or open the COR application for DTA countries and jurisdictions.
4. If you are a foreign employee without Singpass, complete the IRAS Application for Certificate of Residence (XLSX) and email it, as the IRAS page directs.
5. If your home country has an original overseas tax form that needs IRAS endorsement, complete the physical application form and post it with the overseas forms to the Comptroller of Income Tax, Inland Revenue Authority of Singapore, 55 Newton Road, Revenue House, Singapore 307987. IRAS states that postage is free for a local address.
6. Wait for the result. IRAS may contact you if it needs clarification.

IRAS does not describe each myTax Portal screen on the COR page, so follow the on-screen prompts after you scan the QR code and check the page for any update before you start.

How long does a certificate of residence take, and what changes in December 2026?

IRAS says a COR application is processed between 2 and 3 weeks. If you have chosen digital notices, IRAS notifies you by SMS and/or email when the letter is ready to view on myTax Portal. If you receive paper notices, the letter is mailed to your address on record.

Timing matters this year. IRAS is moving to an enhanced myTax Portal. Its downtime notice says all digital services will be unavailable from 22 to 28 December 2026, with services resuming progressively after 29 December 2026, 8:00 AM. For Certificate of Residence applications, the notice tells applicants to submit by 21 December 2026 or after 28 December 2026. The notice lists the COR item in its corporate income tax section, so if you apply as an individual, confirm on the IRAS page that the same dates apply to you.

Because processing takes 2 to 3 weeks, applying close to your home country’s filing deadline is risky. Ask early what the foreign tax authority will accept and by when.

Which home-country forms will IRAS certify?

IRAS publishes one route for forms that need its endorsement: a physical application, with the original overseas tax form attached. It does not publish a list of foreign forms it will or will not endorse, so confirm with IRAS before you post anything.

Here is what the IRAS page does and does not say:

Item	What IRAS states	What to do
Standard COR letter	Certifies Singapore tax residence for DTA purposes	Apply online or by the form for your profile
Original overseas tax form needing endorsement	Use the physical form and post the forms to IRAS	Attach the original form to the application
Which foreign forms IRAS will accept	Not listed on the COR page	Check with IRAS before posting
Period the letter covers	Not stated on the COR page	Check with IRAS, and ask your home tax authority which year it needs

We have not found these two points on the IRAS page, so we do not guess at them. Ask your home country’s tax authority exactly which wording and which year it requires, then raise the same question with IRAS when you apply.

What if I am in my first partial year in Singapore?

Residency is worked out by Year of Assessment, using the previous calendar year, so a mid-year arrival may not reach 183 days in the first calendar year. The concessions and the work pass rule can still help, but you should check your position before applying.

IRAS states that tax is calculated on a preceding year basis: income taxed in Year of Assessment 2026 is income earned from 1 January 2025 to 31 December 2025. A foreigner who arrives in, say, September has fewer than 183 days in that calendar year. IRAS says the 2-year concession may apply to a foreign employee working across 2 calendar years with total stay of at least 183 days, and that a work pass valid for at least 1 year leads to treatment as a tax resident, subject to review at tax clearance. Whether IRAS will issue a COR for your first partial year is a point to confirm with IRAS directly. If you are leaving Singapore, read how IR21 tax clearance can revisit your status.

Non-residents are taxed differently. Per IRAS, a non-resident’s employment income is taxed at the higher of a flat 15% or the progressive resident rate, and director’s fees, consultant’s fees and other income are generally taxed at 24%. Our page on Singapore non-resident income tax goes through both cases.

How does the certificate link to double tax relief?

The COR is the proof of residence. The relief itself comes from the DTA and from the home country’s rules for applying it. IRAS says countries may give tax credits or exemptions to tax residents of Singapore on income derived from their jurisdictions.

The IRAS list of DTAs shows 109 documents: 99 DTAs, 8 limited DTAs and 2 exchange-of-information arrangements, of which 104 are in force (as at 6 November 2026). Singapore has signed DTAs, limited DTAs and exchange-of-information arrangements with around 100 jurisdictions. Agreements that are signed but not ratified do not have the force of law. Check that your home country’s agreement is in force, and read its articles on the type of income you receive.

Separately, IRAS says that for a Singapore tax resident, foreign-sourced income brought into Singapore (other than through partnerships in Singapore) is tax-exempt. That is a Singapore rule. It does not decide what your home country taxes, which is why the certificate matters. For treaty examples, see our pages on India to Singapore relocation and the DTAA and secondment tax rules.

Frequently asked questions

Is a certificate of residence the same as a tax clearance letter?

No. A COR certifies Singapore tax residence for DTA purposes. Tax clearance, filed on Form IR21, concerns foreign employees who are leaving or ceasing employment in Singapore.

Can a non-resident get a certificate of residence?

IRAS describes the COR as certifying that you are a tax resident, and says non-tax residents do not enjoy DTA benefits. A non-resident should not expect one.

Is there a fee for a certificate of residence?

The IRAS COR page does not state a fee. Check the IRAS page or ask IRAS before you apply.

Can I apply by post?

Yes, in specific circumstances. If you have an original overseas tax form that needs IRAS endorsement, complete the physical form and post it with the overseas forms to IRAS.

Where do I see my certificate?

If you have digital notices, IRAS tells you by SMS and/or email when the letter is ready to view on myTax Portal. Paper notice holders receive it by post.

Need help with a work pass, Permanent Residence or citizenship application as you settle in Singapore? Contact Little Big Employment Agency for pass, PR and citizenship applications. Email [email protected] or Call/SMS/WhatsApp +65 8501 7133. For official detail, see the IRAS pages on applying for a Certificate of Residence, working out your tax residency and the list of DTAs.

Last reviewed: 6 November 2026. The Editorial Team, Little Big Employment Agency.