High Yield Savings Account Comparison

How the High Yield Savings Calculator works

Singapore’s high-yield savings accounts pay a small base interest rate, then stack bonus interest tiers on top when you meet specific monthly conditions. Common requirements include crediting your salary via GIRO, spending a minimum amount on the bank’s linked debit or credit card, making a set number of GIRO bill payments, or purchasing an eligible investment or insurance product through the bank. This calculator lets you toggle the requirements you can realistically meet each month, then recomputes each bank’s effective interest rate (EIR) and the monthly interest that rate produces on your balance.

Use it for cash you do not want locked up: an emergency fund, near-term downpayment, or investment war chest. The calculator focuses on accessible bank-account yields, so you can compare whether moving idle cash is worth the extra requirements.

Each bank combines these requirements differently. Accounts like OCBC 360 and Bank of China SmartSaver add a fixed bonus rate for each category you fulfil independently, so meeting more categories simply stacks more bonus interest. Others, like UOB One and DBS Multiplier, use tiered or combination-based bonuses. DBS Multiplier, for example, requires salary credit plus a growing number of additional transaction categories to unlock progressively higher tiers, while UOB One rewards specific pairs of requirements (such as salary credit with card spend, or GIRO with card spend) with a jump to a much higher combined rate. Reading each bank’s actual qualifying criteria matters, since a rate that looks attractive on paper may require a combination of conditions that don’t match your spending habits.

Why the maximum balance cap matters

Every high-yield account caps how much of your balance can actually earn the bonus rate, typically somewhere between $50,000 and $150,000 depending on the bank. Any amount you hold above that cap either earns just the base rate or no bonus interest at all. This calculator applies each account’s cap automatically, so if your balance exceeds a bank’s maximum, only the capped portion is used to compute monthly interest. This shows you a realistic figure rather than an inflated headline rate applied to your full balance. This is also why some savers deliberately split large balances across two or three accounts, each kept under its own cap, to maximise total bonus interest earned.

This tool provides simplified, educational reference estimates only, not licensed financial advice. Bank interest rates, qualifying criteria, and balance caps change frequently and often involve additional tiering not modelled here. Always verify current rates and conditions directly with the bank before making a decision.