Investopedia define SIBOR as follow:
What Does Singapore Interbank Offered Rate - SIBOR Mean?
The interest rate at which banks located in Asian time zones can borrow funds from other banks located in the region. In Asia, the SIBOR is used more commonly than the LIBOR. It is set daily by the Association of Banks in Singapore (ABS). More than anything else, the SIBOR serves as a benchmark, or reference rate for borrowers and lenders that are directly or indirectly involved in an Asian financial market.
The interest rate at which banks located in Asian time zones can borrow funds from other banks located in the region. In Asia, the SIBOR is used more commonly than the LIBOR. It is set daily by the Association of Banks in Singapore (ABS). More than anything else, the SIBOR serves as a benchmark, or reference rate for borrowers and lenders that are directly or indirectly involved in an Asian financial market.
Investopedia explains Singapore Interbank Offered Rate - SIBOR
Because of its location, political stability, strict legal and regulatory environment as well as the volume of business undertaken in Singapore, the city state is regarded as a major hub of Asian finance. Commonly, very large loans to businesses in the area and interest rate swaps involving businesses participating in the Asian economy will be quoted or denominated in SIBOR plus a number of basis points.
Because of its location, political stability, strict legal and regulatory environment as well as the volume of business undertaken in Singapore, the city state is regarded as a major hub of Asian finance. Commonly, very large loans to businesses in the area and interest rate swaps involving businesses participating in the Asian economy will be quoted or denominated in SIBOR plus a number of basis points.
Also some useful information from housingloansg.com:
What is SIBOR?
It stands for the Singapore Interbank Offered Rate.
Where do you see this?
In bank statements explaining how your mortgage rates are determined.
What does it mean?
It refers, more or less, to repayments on your loans, because Sibor affects the mortgage rate.
Sibor is the rate at which banks lend to one another. When it falls, so do rates for variable or Sibor-linked mortgages. When the Sibor rises, you have to fork out more.
Sibor also gives a rough indication of where deposit and savings account rates at banks might be headed, as it is influenced partly by the supply and demand for funds in the Singapore interbank market.
When Sibor is low, it is cheaper for foreign banks, which have a smaller deposit base than local ones do, to borrow funds from the interbank market for their lending activities.
When this happens, the foreign banks are less likely to offer higher fixed deposit rates to attract Singaporeans to park cash with them.
But when liquidity in the market is tight and interbank rates rise, local banks will offer more attractive rates to convince Singapore savers not to switch to foreign rivals.
Why is it important?
Sibor is a key component used by banks in setting their home loan rates.
A blend of different interest rates - such as one-month, three-month and even 12-month Sibors - is typically used by banks to set fixed or variable rates for home loans.
The three-month Sibor is a common benchmark rate used by the banks to adjust their deposit rates. By monitoring it, you can get an indication of where banks are headed next with their fixed deposit and savings account rates.
Sibor is also used to set rates for so-called transparent mortgage packages offered by the three local banks as well as Standard Chartered, HSBC and Citibank