Savings & rates

T-Bill Yield and Cash Flow Calculator

Translate a Singapore T-bill indicated or auction yield into the discounted purchase price, application refund, maturity proceeds, fees, net gain and effective annualised return.

✓ Results shown free✓ Dated source references✓ General information only

Live calculator

Uses the official MAS discount-price method. Rules and bank fee references verified 17 Aug 2026.

Your T-bill assumptions

Choose a recent MAS auction result or enter an indicated yield. No future auction yield or allotment is predicted.

MAS price method

Yield source

Manual indicated yieldEnter a yield you have seen or want to test. It is not treated as a live quote.Recent MAS auction resultLoads published cut-off yields from the interest.sg MAS data cache.

Loading official MAS auction results…

Annual yield*

Enter the annual yield percentage, not the discount amount.

Application and allotment

Application face amount*

S$1,000 blocks, from S$1,000 to S$1 million.Allotted face amount

Optional. Leave blank to assume full allotment; enter a lower S$1,000 block to model a partial allotment.T-bill tenorExact days to maturity*

The official price method uses actual days divided by 365. Use 175–190 days for a 6-month T-bill or 350–370 days for a 1-year T-bill.

Funding and bank fees

Funding methodInstitution / CPF agent bank

Published fee presetUses the selected bank and funding method. Review against the latest bank schedule.Enter custom feesAll custom fee fields below are before GST.

Current preset before GST

No published bank fee in this preset

Expected custody charge count

DBS/POSB CPF-OA charges custody per counter per quarter. The count follows the entered duration; verify your statement cycle.GST rate

Add GST to entered or preset fees

Hold-to-maturity estimate

Excludes CPF interest forgone and break-even analysis, auction success or bid strategy, reinvestment, SRS withdrawal tax, secondary-market sale proceeds and personal tax.

⌁ Calculated in your browser. Inputs are sent only when you choose to save or export.

Clear outputs

What this tool will show

Each result stays connected to the inputs and rules used.

01Discounted purchase price
02Application refund and maturity proceeds
03Gross and net gain
04Gross and net effective annualised return
05Fee and cash-flow timeline

Transparency standard

The workings stay visible from day one.

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Official rules

Applied parameters include a source and verification date.

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Assumptions

User inputs and defaults are clearly separated.

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Limits

Scope and exclusions appear beside the result.

Read the full methodology→

interest.sg provides general information, dated reference data and calculation tools. Results are estimates—not financial, investment, legal, tax, property, valuation, CPF, HDB, lending, insurance or protection advice. Verify material decisions with the relevant authority or a qualified professional.

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T-Bill Yield and Cash Flow Calculator

Your T-bill assumptions

What this tool will show

The workings stay visible from day one.

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