TBILLEQ function in Google Sheets
Calculates the equivalent annualized rate of return of a US Treasury Bill based on discount rate.
=TBILLEQ(settlement, maturity, discount)TBILLEQ syntax and parameters
Three arguments, three required.
- settlementanyRequired
The settlement date of the security, the date after issuance when the security is delivered to the buyer.
- maturityanyRequired
The maturity or end date of the security, when it can be redeemed at face or par value.
- discountnumberRequired
The discount rate of the bill at time of purchase.
TBILLEQ examples
Formulas you'll actually reuse.
The bond-equivalent yield of the 4.5% discount — comparable with coupon bonds:
=TBILLEQ(DATE(2026, 3, 15), DATE(2026, 6, 14), 4.5%)Result
0.0462How much the bond-equivalent yield exceeds the quoted discount:
=TBILLEQ(B2, C2, D2) - D2
TBILLEQ in Excel
Same name — your formula ports as-is.
Try TBILLEQ in the playground
Edit the example — nothing to install.
Preloaded with the TBILLEQ formula from Example 1 — change anything and watch it respond.
Related functions
More ways Google Sheets gets this done.
- ACCRINTCalculates the accrued interest of a security that has periodic payments.FinancialExcel
- ACCRINTMCalculates the accrued interest of a security that pays interest at maturity.FinancialExcel
- AMORLINCReturns the depreciation for an accounting period, or the prorated depreciation if the asset was purchased in the middle of a period.FinancialExcel
- COUPDAYBSCalculates the number of days from the first coupon, or interest payment, until settlement.FinancialExcel
- COUPDAYSCalculates the number of days in the coupon, or interest payment, period that contains the specified settlement date.FinancialExcel
- COUPDAYSNCCalculates the number of days from the settlement date until the next coupon, or interest payment.FinancialExcel