myTax Portal Technical FAQ

The following are some possible reasons for the error message: 

a) Accessing a digital service that is not optimised on mobile device. You can increase your browser size or switch to a desktop/ tablet to access the digital service. 

b) The font size or screen display/ zoom setting on the mobile device is too large. You may change the setting by following the steps below.

If you are using a mobile device with Android Operating System, reduce the font/ text or display/ zoom setting:

Note: Some of these steps work only on Android version 13 and up.

1. On your device, open the Settings app.
2. Search and select Font size or Display/ Zoom size.
3. Reduce the font or display/ zoom size e.g., you may move the slider left to adjust accordingly.
   
   

Or if you are using any of these browsers, reduce the zoom size to 100%:

Google Chrome

1. Tap the menu at the top-right corner and select Settings
2. Under Accessibility, set Default zoom as 100%
   

Safari

1. Go to iPhone Settings > Accessibility > Zoom, then turn on Zoom
2. Adjust the Zoom level as 100%
   

Microsoft Edge

1. Tap the menu at the top-right corner and select Settings
2. Under Accessibility, go to Text Scaling or Page zoom and set as 100%
   
   

If the problem persists, chat with us at go.gov.sg/iras-livechat.

Step 1:
Clear cookies, cache and history by following the appropriate procedure below for your web browser: 

Internet Explorer 11

1. Open start menu and search Internet Options
2. Select Internet Options and go to Browsing History and click Delete
3. Leave the checkbox as default and click Delete

Google Chrome

1. Type chrome://settings/clearBrowserData in the address bar
2. Select Time range to All Time
3. Tick on Browsing History, Cookies and other site data and Cache image and Files
4. Click on Clear Data

Safari

1. Click Safari on the menu bar and select Preference
2. Click Advanced Tab and check Show Develop menu in bar option to add the menu to Safari by default 
3. Click Develop on the menu bar and select Empty Caches

Firefox

1. Type about:preferences#privacy in the address bar
2. Scroll down you will see a History sub heading click Clear History
3. Select Time range to clear to Everything
4. Tick on Browsing & Download History, Cookies, Form & Search History, Active Login, Cookies and Cache
5. Click OK

Microsoft Edge

1. Click the menu at the top-right corner and select Settings
2. Under Clear browsing data, click Choose what to clear
3. Check Cached data and files and click Clear

Note: When you clear your cache and cookies, your previously visited websites will be removed. If you want to save any of these sites for future reference, add them as Bookmarks before clearing cache.

Alternatively, you may use Private Browsing mode on your web browser. For Internet Explorer or Mozilla Firefox, press Ctrl + Shift + P after launching Explorer or Firefox. For Google Chrome, press Ctrl + Shift + N after launching Chrome.

Step 2: 
Ensure that your device(s) meet the minimum browser compatibility requirement to access myTax Portal.

If the problem persists, chat with us at go.gov.sg/iras-chat.

Step 1:
Close all existing browsers and log in again on a new window/session.
Alternatively, you can try on another browser using your computer or mobile device.

Step 2:
Clear cookies, cache and history by following the appropriate procedure below for your web browser:

Internet Explorer 11

1. Open start menu and search Internet Options
2. Select Internet Options and go to Browsing History and click Delete
3. Leave the checkbox as default and click Delete

Google Chrome

1. Type chrome://settings/clearBrowserData in the address bar
2. Select Time range to All Time
3. Tick Browsing History, Cookies and other site data and Cache image and Files
4. Click on Clear Data

Safari

1. Click Safari on the menu bar and select Preference
2. Click Advanced Tab and check Show Develop menu in bar option to add the menu to Safari by default
3. Click Develop on the menu bar and select Empty Caches

Firefox

1. Type about:preferences#privacy in the address bar
2. Scroll down you will see a History sub heading click Clear History
3. Select Time range to clear to Everything
4. Tick Browsing & Download History, Cookies, Form & Search History, Active Login, Cookies and Cache
5. Click OK

Microsoft Edge

1. Click the menu at the top-right corner and select Settings
2. Under Clear browsing data, click Choose what to clear
3. Check Cached data and files and click Clear

Note: When you clear your cache and cookies, your previously visited websites will be removed. If you want to save any of these sites for future reference, add them as Bookmarks before clearing cache.

Alternatively, you may use Private Browsing mode on your web browser. For Internet Explorer or Mozilla Firefox, press Ctrl + Shift + P after launching Explorer or Firefox. For Google Chrome, press Ctrl + Shift + N after launching Chrome.

If the problem persists, chat with us at go.gov.sg/iras-livechat.

You would not be able to return to the previous page if you have unsaved information/ changes. You may save your

updates and return to the previous page using the "Back to previous" hyperlink on the top of the page or "Back to

previous" button at the bottom of the page. 

Browser Compatibility

For PCs/ desktops:

For iPhones & iPads:

For Android Tablets and Phones:

For Safari on iPhone/ iPad (iOS 15 to 17/ iPad OS 15 to 17):

1. Tap on the on the screen.
2.  Tap on 'Options>':
   
   
   
3. Tap on 'PDF', and tap 'Done':
   
   
4. Tap on 'Save to Files':
   
   
5. Tap on the folder that you wish to store your PDF, and tap 'Save':
   
   

For Safari on iPhone/ iPad (iOS 15 to 17/ iPad OS 15 to 17):

1. Tap on the on the screen.
2. Tap on the icon 'Save PDF to iBooks'.
   
3. The PDF will be stored in your local iBooks storage.

Solution 1 : Check the time on your desktop

Please ensure your desktop’s time reflects Singapore time. If the time is not in sync with Singapore time, please follow the steps below to update it:

Windows PC

1. In the Start menu, type Date and select Date and time settings

2. Click Set the time automatically or set the date and time manually by clicking Change button

Mac Device

1. Click on the apple icon

2. Select System Settings

3. Select General

4. Select Date & Time

5. Turn on Set time and date automatically

Solution 2: Clear browser cache

Google Chrome

1. Go to “chrome://settings/clearBrowserData” via browser’s address bar
2. Under “Time range”, select the “All time” option and select all check boxes
3. Click on “Delete data"

Edge

1. Go to “edge://settings/clearBrowserData” via browser’s address bar
2. Under “Time range”, select the “All time” option and select all check boxes
3. Click on “Clear now”

Solution 3: Use incognito mode in browser

1. Press Ctrl+Shift+N to open new incognito window

You may chat with us online or call 1800 356 8300 from Mondays to Fridays, 8:00 am to 5:00 pm (except Public Holidays).

Please get ready the following information for us to review your feedback: 

1. Name of the digital service you have accessed and encountered the prompt message
2. Type of device you used e.g., smartphone, tablet or desktop
3. Browser used e.g., Google, Microsoft Edge
4. Browser/ Operating System version