Because you're buying a $1,000 Treasury bill instead of one for $100, multiply 99.25 by 10 to get the final price of $992.50. Keep in mind that the Treasury doesn't make separate interest payments ...

Pricing of T-bills uses a discount formula: [(days to maturity * interest rate) ... To calculate the price, take 180 days and multiply by 1.5 to get 270. Then, divide by 360 to get 0.75, ...

To calculate yield, subtract the bill's purchase price from its face value and then divide the result by the bill's purchase price. Finally, multiply your answer by 100 to convert it to a percentage.