A treasury bill (T-bill) is a short-term debt security issued by the Egyptian government — through the Central Bank of Egypt on behalf of the Ministry of Finance — with maturities of 91, 182, 273, or 364 days. T-bills are sold at a discount to their face value: you pay less than the face value today and receive the full face value at maturity. The difference is your return.
T-bills are issued weekly through auctions at the CBE. Individual investors access them through their banks, which participate in the auction. The returns are among the highest of any short-term instrument in Egypt, though they are subject to a 20% withholding tax on the return.