Tax Season 2026 in Singapore: What Individuals Need to Know

Tax season in Singapore is an important annual obligation for residents and foreign individuals who earned income here. Whether you’re a first-time taxpayer or simply need a refresher, understanding the key steps and requirements for 2026 will help you avoid penalties, make the most of reliefs, and ensure your tax matters are handled smoothly.

This guide draws from official information published by the Inland Revenue Authority of Singapore (IRAS) and explains what you must do, timelines, documentation, and practical tips for a stress-free tax season.

What Is Tax Season and Why It Matters

In Singapore, individual income tax is assessed yearly based on income earned in the previous calendar year. For Tax Season 2026, the income you earned in calendar year 2025 will be assessed for the Year of Assessment (YA) 2026.

The IRAS uses a digital system called myTax Portal, where most taxpayers can e-file their income tax return online. If all your income information has already been submitted through employer schemes like AIS (Auto-Inclusion Scheme), your return may be pre-filled—meaning you simply need to verify and submit.

Important Dates for Tax Season 2026

Here are the key dates you should note as 2026 approaches:

• 1 Mar 2026: Filing season opens on the IRAS myTax Portal. Taxpayers can start e-filing their 2025 income.
• 18 Apr 2026: Deadline to e-file your individual income tax return.
• End of Apr 2026 onwards: IRAS begins issuing your Notice of Assessment (tax bill) after processing returns and pre-filled information.

Make sure you complete your filing before the 18 April deadline. Filing late may result in penalties and additional charges.

Update Your Contact Details Early

One of the simplest yet most important steps before tax season begins is to update your mobile number and email address on the myTax Portal. This ensures you receive timely notifications, reminders, and digital correspondence from IRAS regarding your return and tax bill.

You can update your contact details under the “Update Contact & Notification Preferences” service in myTax Portal. This helps ensure you receive alerts when your Notice of Assessment becomes available.

Check Whether You Need to File a Tax Return
Not every individual will need to file an income tax return manually.

No Filing Service (NFS)

If you are selected for the No Filing Service (NFS) and you only had employment income submitted under AIS, you do not need to file a return. Instead, IRAS will calculate your taxes based on the submitted information and send you a tax bill.

Filing Required

You must file a return if:

• You receive a notification to file from IRAS.
• You have income types that were not submitted under AIS (such as rental income or side income).
• You want to change or claim additional reliefs not pre-filled in your tax return.

You can check whether you need to file by using the Filing Checker on the IRAS website.

Understanding Key IRAS Filing Terms

Auto-Inclusion Scheme (AIS)

If your employer participates in the Auto-Inclusion Scheme, your employment income is automatically sent to IRAS electronically and pre-filled into your tax return. This simplifies filing and reduces errors.

Employers under AIS must submit their employees’ employment income by 1 Mar 2026 and the information is automatically included for YA2026.

Direct Notice of Assessment (D-NOA)

If you meet certain criteria—such as only having pre-filled employment income and previous reliefs—you may be issued a tax bill directly without needing to file. This is known as the Direct Notice of Assessment scheme.

Filing Checker

Use the Filing Checker in myTax Portal to confirm if you need to file a tax return for YA2026.

Documents You Should Prepare

For a smooth tax filing experience, have the following documents ready (if applicable):

• Form IR8A (if your employer is not part of AIS)
• Salary slips and bonus details
• Rental income statements
• Statements for reliefs (such as parent relief, education reliefs, or CPF contributions)
• Donations and qualifying charitable contributions
• Other income sources not captured by AIS

Keeping these documents accessible will help you complete your filing accurately and claim all eligible reliefs.

Filing Your Return on myTax Portal
Once the filing season begins on 1 Mar 2026, you can start filing your individual income tax return via the myTax Portal using:

• Singpass (for Singapore citizens and residents)
• Singpass Foreign user Account (SFA) (for non-residents or foreigners)

Navigate to “Individuals” > “Filing Matters” to file your tax return. If your employer submitted income under AIS and you are selected for NFS, simply review and confirm your details.

After You File: Notice of Assessment

After you submit your return (or if you’re on NFS), IRAS will issue your Notice of Assessment (NOA) starting from late April 2026.

This notice will include:

• Your total income
• Allowable deductions
• Tax payable

Check your NOA carefully. If you identify errors or missing items, you may use the “Amend Tax Bill” service in myTax Portal within 30 days of the issuance date to correct the details.

Updating your contact details (mobile and email) ensures you receive alerts and notifications when your NOA is ready to view online.

Late Filing and Extensions

If you are unable to file by the 18 Apr 2026 deadline, you may apply for an extension of time to file through the myTax Portal before the deadline. Extensions are typically granted for specified valid reasons.

Failing to file on time without an extension may result in penalties and additional charges.

Tips for a Stress-Free Tax Season

Here are some practical tips to make your tax filing easier:

✔ Update contact details early

Ensure you can receive notifications promptly.

✔ Check if your employer is on AIS

If so, much of your income return will be pre-filled.

✔ Use the Filing Checker

Verify whether you need to file to avoid unnecessary steps.

✔ Gather supporting documents ahead of time

Keep all receipts and statements ready before the filing period starts.

Conclusion

Tax Season 2026 in Singapore is a structured process supported by the IRAS’s digital myTax Portal and pre-filing systems like AIS and D-NOA.

By understanding your requirements, updating your contact information, checking filing obligations early, and preparing your documents ahead of time, you can approach tax season confidently and accurately. For most individuals, the process is streamlined, but attention to detail ensures you meet deadlines and take advantage of all eligible reliefs.

For the official IRAS guidance on Tax Season 2026, visit:
🔗 IRAS – Tax Season 2026 – All You Need to Know: https://www.iras.gov.sg/taxes/individual-income-tax/basics-of-individual-income-tax/understanding-my-income-tax-filing/tax-season-2026---all-you-need-to-know