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  • Corporate Tax

    Calculator Description
     Basic Corporate Tax Calculator (BTC)

    BTC for Companies Filing Form C-S
    BTC for Companies Filing Form C
    The BTC is designed for trading companies and it comes with commonly used schedules such as the capital allowance schedule. You can use the Tax Calculator to prepare your company's tax computation and work out the tax payable.

    If you are filing Form C-S, the company’s tax computation and supporting schedules are not required to be submitted together with Form C-S. They are to be retained and submitted only upon IRAS’ request.

    If you are filing Form C, please submit your tax computation and supporting schedules with Form C.


  •  Withholding Tax New!
Calculator Description

 S45 Double Taxation Relief Tax Rate Calculator for companies

 Check applicable Double Taxation Relief tax rate for form IR37 filing

 Tax Treaty calculator for non-resident professionals    (232KB) 

Check eligibility for tax treaty exemption and complete IR586 online


Calculator Description

 Stamp Duty Calculator for documents dated on or after 22 February 2014 (228KB)
 Stamp Duty Calculator for documents dated before 22 February 2014  (247KB) 

Compute the stamp duty payable (including Seller's Stamp Duty) for the following types of documents:

  • Lease/rental of property
  • Sales and purchase of property
  • Mortgage of property and shares
  • Shares transfer
  • Clubs, Trade Associations and MCs
Calculator Description
Basic Tax Calculator

 Year 2009    (119KB) (applicable for YA 2008 and 2009
 Year 2010    (111 KB) (applicable for YA 2010 onwards)

Compute the tax liability of the club/society/association/management corporation 

  • Goods and Services Tax
Calculator Description
 GST Registration Calculator (1386 KB)

Determine when your business is liable for GST registration. This calculator has been revised in 2014.

 GST F7 Calculator (660 KB)

Determine eligibility for correcting past GST submission errors in next period's returns, and calculating the values towards filing consolidated F7 returns.
  •  Wage Credit Scheme (WCS)
Calculator Description

WCS Calculator *  New  
(Works best with Microsoft Office Excel 2007 or later versions)

WCS Calculator (Excel 97-2003)  * New
(Works best with Microsoft Office Excel 97 - 2003 version)


Compute the Wage Credit for employers.


Last Updated on 15 April 2015

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