Daily DAX : Day 394 TBILLYIELD

Power BI DAX: TBILLYIELD Function

Function Syntax

TBILLYIELD(settlement, maturity, price)

Parameters

  • settlement: The date when the Treasury bill is purchased (settlement date).
  • maturity: The date when the Treasury bill matures (expiration date).
  • price: The price per $100 face value of the Treasury bill.

What It Returns

The TBILLYIELD function calculates the yield (annualized return) of a U.S. Treasury bill, expressed as a decimal (e.g., 0.05 = 5%).

Use Case: Treasury Bill Yield Analysis

Use TBILLYIELD when you need to:

  • Calculate the effective yield of a T-bill based on its purchase price and maturity.
  • Compare returns across different T-bills with varying prices and terms.
  • Support fixed-income investment dashboards or cash management reports.

Example

Suppose you bought a T-bill on June 15, 2025 that matures on December 12, 2025 for $98.50 per $100 face value.

T-Bill Yield = 
TBILLYIELD(
    DATE(2025, 6, 15),   // settlement
    DATE(2025, 12, 12),  // maturity
    98.50                // price per $100
)

Result: Approximately 0.0305 → 3.05% annualized yield

Key Notes

  • Assumes a 360-day year (standard for U.S. Treasury bills).
  • Settlement date must be before maturity date.
  • Price must be between 0 and 100.
  • Commonly used in financial modeling, treasury management, and risk analysis reports.

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