Finance Calculators
Savings interest, Singapore Government Securities, and average share price. Nothing you type is sent anywhere — every figure is worked out in your browser.
Simple or compound, at whichever frequency your account actually pays.
In $500 units, from $500.
An SSB can be redeemed in any month with no penalty, so this is a choice, not a commitment.
MAS has not published this issue's interest rates yet.
Add each purchase as its own row. The average is weighted by quantity, so a large lot moves it more than a small one.
These are estimates for planning, not financial advice, and they exclude the transaction fee your bank charges per application. Figures for an issue MAS has not yet published results for are withheld rather than guessed.
Frequently asked questions
What's the difference between simple and compound interest?
Simple interest is paid on your original deposit only, so $10,000 at 3% earns $300 every year no matter how long you leave it. Compound interest is added to the balance and then earns interest itself, so the same deposit at 3% compounded monthly earns $3,493 over ten years instead of $3,000. The more often it compounds, the more you get: 3% compounded monthly is worth 3.0416% a year, against exactly 3% compounded annually.
How do I work out my average price after buying a stock several times?
Divide the total amount you spent by the total number of shares you hold — not the average of the prices you paid. Those are different numbers whenever your purchases were different sizes. Buying 5,000 shares at $1.00, 5,000 at $0.90, 75,000 at $0.80 and 100,000 at $1.32 costs $201,500 for 185,000 shares, so the average is $1.0892. Averaging the four prices gives $1.005, which is wrong by 8% because it treats a 5,000-share purchase as equal to a 100,000-share one.
Why does a T-bill ask for a face value rather than an amount to invest?
A T-bill pays no interest. You apply for an amount of face value in $1,000 multiples, pay less than that at issue, and receive the full face value at maturity — the difference is your return. So if you apply for $100,000 of a T-bill at a 1.6% cut-off yield over 182 days, roughly $99,202 leaves your account and $100,000 comes back, a return of about $798. Because you only paid $99,202, the return on your own money works out slightly above the quoted yield.
How does an SSB's step-up interest affect what I earn?
Each Singapore Savings Bond issue sets a different interest rate for each of its ten years, usually starting low and rising. GX26090V pays 1.52% in year one and 2.82% in year ten, so how long you hold it changes your return substantially — and because interest is paid out every six months rather than added to your principal, each year earns its own rate on the original amount. You can redeem in any month without penalty, so the holding period is your choice.