Short term visas are common for guests visiting Singapore for short periods of time. Factors influencing whether this is the correct visa to obtain include the visitor’s home country, duration of stay, and purpose of their visit.
Typically a short term visa can be obtained at the border. Citizens of some nationalities need to obtain a Social or Business Visa before entering. A list of these countries can be found at http://www.ica.gov.sg
The visitor needs to satisfy the following requirements:
Once the short term visa is approved at the border, it will contain an approved duration of stay. It is important that the duration of stay does not exceed the approved time period, as it is a punishable offence in Singapore to do this. It is quite easy to get an extension, and you must apply for it before your approved time period is over.