1999
- The Taxpayer Service Pledge is launched.
- The Taxpayer Feedback Panel is set up.
- e-Stamping, the electronic stamping of documents, is launched.
- IRAS attains the Singapore Quality Class.
1998
- In a link-up with Singapore Broadcasting Authority, IRAS collects TV licence fees together with property tax.
- e-Filing of individual income tax via the internet is introduced.
- Auto-inclusion of employment income is implemented.
- Stamp duty is removed for all instruments, except those which relate to stocks, shares and immovable property, with effect from 28 February.
- Electronic Valuation List, an online enquiry of the valuation of properties, is launched.
- e-Filing of GST returns via CPF/IRASLine is introduced.
- The first taxpayer focus group is held.
- The first taxpayer survey is conducted.
1997
- Auto-inclusion of dividend income is extended to dividends paid through Central Depository and CPF agent banks.
- Auto-inclusion of Nsmen relief is introduced.
- Koh Cher Siang is appointed as Commissioner of Inland Revenue.
1996
- IRAS moves to Revenue House from 4 different locations, namely Fullerton Building, Albert Complex, Colombo Court and International Plaza.
- IRAS offers full-day taxpayer service on Saturdays.
- IRAS signs the First Collective Agreement with the IRASSU.
1995
- Rollout of Inland Revenue Integrated System (IRIS) in February.
- Auto-inclusion of dividend income is first introduced for Singapore Telecom shares.
- IRAS homepage is launched.
- IRAS hosts the 25th SGATAR meeting.
1994
- Telephone filing for individual income tax is launched.
- Student Volunteer Tax-Filing Service is introduced.
- A simplified “4-line statement” tax form for sole-proprietors and partners is introduced.
- The inaugural Budget Seminar is held.
- Goods and Services Tax (GST) is introduced from 1 April.
- IRAS takes over from Customs & Excise Department the collection of cess for Singapore Tourist Promotion Board.
1993
- The annual filing deadline for individual income taxes is now a fixed date, 15 April.
- The IRAS Staff Union (IRASSU) is formed in June.
- InTax software for individual taxpayers is introduced.
- “Compass”, a publication to explain and clarify tax laws, is launched.
1992
- Form B1, the simplified tax form for employees, is introduced.
- Computer Assisted Mass Appraisal system for property tax assessments is implemented.
- Inland Revenue Information Service, the automated 24-hour telephone answering system, is launched.
- IRD is converted to a statutory board and renamed Inland Revenue Authority of Singapore (IRAS).
- Legal Requisition system for lawyers dealing with property transactions is launched.
1991
- Koh Yong Guan is appointed as Commissioner of Inland Revenue.
1990
- The concessionary property tax rate of 4% for owner-occupied residential property is introduced.
2010
2000 to 2009
Prior to 1990