---
title: "How to File Income Tax Singapore 2026 | Step-by-Step Guide"
description: "Comprehensive step-by-step guide for filing your Singapore Income Tax for YA 2026. Learn about myTax portal, late filing penalties, and checking filing status."
keywords: "How to file income tax Singapore 2026, late income tax filing penalty Singapore, IRAS filing checker 2026"
url: "https://cpfcalculator.sg/personal-tax-2026/filing-guide"
author: "CPF Calculator"
language: "en"
---

[Home](/) / [Personal Tax '26](/personal-tax-2026/index) / Filing Guide

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Step-by-Step Guide

# Comprehensive Guide to Singapore Income Tax Filing 2026

Step-by-step instructions, tools to check your status, and what to do if you miss the deadline.

## In this guide:

  * IRAS Filing Checker 2026
  * How to File Income Tax \(Step-by-Step\)
  * Late Filing Penalties & Appeals

1

## IRAS Filing Checker 2026

Not sure if you need to file? The easiest way to find out definitively is by using the official **IRAS Filing Checker** tool. This tool helps you confirm your individual filing status and avoid potential non-compliance penalties.

#### How to use the checker:

  1. Visit the official IRAS website and navigate to the Filing Checker tool.
  2. Enter your NRIC/FIN and your date of birth.
  3. The system will instantly inform you whether you are required to file a tax return for YA 2026 or if you have been selected for No-Filing Service \(NFS\).

2

## How to File Income Tax Singapore 2026

Filing your taxes online via the myTax Portal is the recommended method. The deadline for e-filing is **April 18, 2026**.

### Prerequisites & Document Preparation

  * **Active Singpass Account:** You must have a valid Singpass to log into the myTax Portal. If you have forgotten your password, reset it online before filing.
  * **Form IR8A:** If your employer is participating in the Auto-Inclusion Scheme \(AIS\), your employment income will be pre-filled. If not, you will need your Form IR8A from your employer to manually input the details.
  * **Dependant Particulars:** Gather the NRIC/FIN and dates of birth of any dependants \(spouse, children, parents\) if you are claiming relief for them.

### Step-by-Step myTax Portal Walkthrough

  1. **Log In:** Go to myTax Portal and log in using your Singpass app or credentials.
  2. **Access Filing Menu:** Click on "Individuals" and select "File Income Tax Return".
  3. **Verify Details:** Review the pre-filled information, including your employment income \(if under AIS\) and previous year's relief claims.
  4. **Update Information:** Declare any other sources of income \(e.g., rental income, freelance work\). Update or add new tax reliefs and deductions you are eligible for in YA 2026.
  5. **Declare & Submit:** Carefully review the consolidated statement. Once confirmed, submit your declaration. You will receive an acknowledgment receipt—save this for your records.

3

## Late Filing Penalties & Waivers

Failing to file your tax return by the due date \(April 18 for e-filing, April 15 for paper filing\) will result in punitive measures for non-compliance.

#### Consequences of Late Filing

  * You may face a late filing penalty of **up to S$5,000**. 
  * IRAS may issue an estimated Notice of Assessment, which you must pay within 1 month, even if you intend to object to it.
  * Summons to attend Court may be issued.

### Appeal for Penalty Waiver

If you have a valid reason for missing the deadline, you can submit an appeal. However, waivers are granted on a case-by-case basis and usually require you to have filed the overdue return and paid any assessed tax first.

  1. Log in to the **myTax Portal** using your Singpass.
  2. Navigate to the **Digital Services** menu.
  3. Select **Appeal for Penalty Waiver**.
  4. Follow the on-screen prompts to submit your justification. You will be notified of the outcome online.