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Organization : Inland Revenue Authority of Singapore
Facility : How to File Tax
Country : Singapore
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IRAS How to File Tax

Ways to file Form B, filing deadlines and user guides for sole-proprietors / self-employed persons.

Related : Inland Revenue Authority of Singapore Check Outstanding Tax :

Ways of Filing

There are two ways to file Form B :
** e-File via myTax Portal (Recommended)
** You can e-File via myTax Portal with your SingPass / IRAS PIN.
** Paper file

If you are required to file, IRAS will send your Form B from Feb to Mar. Please complete the paper form and post to IRAS at
Inland Revenue Authority of Singapore
55 Newton Road
Revenue House
Singapore 307987

Submission of Documents

** Do not send in supporting documents such as receipts for insurance premiums, donations, course fees, etc. together with your Form B unless you are asked to do so. All documents sent in will not be returned and may be destroyed.

** You are required to keep proper records and documents of the income, deductions and reliefs declared in your tax return.
** Please retain all your records, receipts and documents for any claim for reliefs or expenses for at least 5 years for verification purposes.

Other Information

** Drop the cents; enter the dollars only. For example, for $850.80, fill in $850.

** If your business is registered with ACRA (Accounting and Corporate Regulatory Authority), please fill in the business registration number in the boxes provided at item 1a(4) Unique Entity Number on page 2 of Form B. Do not enter “-” for business registration number, for example, if your business registration number is 521234-00X, fill in 52123400X.

** If you are a partner of a partnership business, enter your salary/bonus/CPF/benefits derived from the partnership in section 1b [PARTNERSHIP 1] on page 2. Do not enter this income in section 2 [EMPLOYMENT] on page 2.

** If you are carrying on a trade, business, profession or vocation, you are required to maintain, for at least 5 years, a proper set of books of accounts and other records of your business to enable us to ascertain your income and allowable business expenses readily.

Points to Note When e-Filing

“Save As Draft” Facility

If you are not able to complete your filing at one session, please save the return as ‘draft’. The draft will be retained in the portal for 14 days. Please note that this draft is not a submission of your Income Tax return.

You are required to submit your Income Tax Return within 14 days of your draft or before 18 Apr 2017, whichever is earlier.

You can access the draft and make the necessary amendments before you submit your income tax return. To retrieve the draft copy of your Income Tax Return, login to using your SingPass or IRAS PIN.

On the top menu, click “Individuals” and select “File Form B/B1”. Follow the instructions shown on the screen to retrieve your Income Tax Return and continue to file.


Please do not leave your filing session idle for more than 20 minutes. Otherwise, the session will expire and you will be required to log in to the portal again. If you are unable to complete your filing, you may save a ‘draft’ of your filing before you log out from the portal.

Re-Filing Before Receipt Of Your Tax Bill

You can only re-file once. Re-filing must be done within 14 days of your previous submission or before 18 Apr 2017, whichever is earlier.

When you re-file, you must include all your income details (excluding information provided by employers participating in the Auto-Inclusion Scheme (AIS) for Employment Income and other relevant organisations) and expenses/donations/reliefs claims.

Once you have re-filed successfully, your new submission will override the previous submission. However, if you wish to make amendments after you have re-filed, you may email us.

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