Safety and backing
A T-bill is backed by the Singapore Government. A fixed deposit is a claim on your bank; eligible deposits are insured by the Singapore Deposit Insurance Corporation (SDIC) up to the coverage limit per depositor per bank.
For amounts within the SDIC limit at a sound bank, both are considered very safe. For larger sums, the government backing of a T-bill is a point some savers weigh.
How you learn the rate
A fixed deposit rate is quoted before you commit — you know exactly what you will earn. A T-bill yield is set at auction, so you commit before the final number is known (unless you use a competitive bid to cap your minimum acceptable yield).
Banks also run promotional FD rates from time to time that can be competitive with T-bills, so it is worth comparing the latest of each rather than assuming one always wins.
Liquidity and tax
Both tie money up for a set term. Breaking a fixed deposit early usually means losing some or all of the interest. A T-bill is held to maturity, though it can be sold on the secondary market if you need to exit.
Tax is a genuine differentiator: for individuals, interest on SGS T-bills is exempt from Singapore income tax. Interest treatment on deposits can differ. Confirm your own tax position, as rules can change.
Check the latest at the source
Yields, calendars and rules change. Confirm current details on the official Monetary Authority of Singapore (MAS) website before you act.
MAS bonds & bills ↗This guide is general educational information, not financial advice. T-Bills Singapore is independent and not affiliated with MAS, the CPF Board or any bank. Consider your own circumstances and, if in doubt, speak to a licensed financial adviser.
