Treasury bill calculator

Choose a bill and enter what you want to invest. See what you get back at maturity at the latest auction's rate, and what rolling it over for a year would earn. Change the rate to compare a bank's fixed deposit.

Amount you invest

GH₵

Interest rate a year

Auction of 28 Sept 2026. Or enter your bank's fixed deposit rate.

Paid at maturity, 28 Dec 2026

GH₵10,116.96

GH₵116.96 interest on GH₵10,000.00, for a bill from the 28 Sept 2026 auction

Interest: GH₵116.96
Rolled over for a year at the same rate: GH₵476.12

The latest auction

91-day bill

4.6785%

28 Sept 2026

182-day bill

6.37%

28 Sept 2026

364-day bill

9.8339%

28 Sept 2026

An estimate, not investment advice. Rates are set at each week's auction.

How it works

The Bank of Ghana sells 91, 182 and 364-day treasury bills for the government at an auction each week. You pay less than a bill's face value and get the face value back at maturity; the difference is your interest.

The rate here is the auction's interest rate: the return on what you pay, over a 364-day year. The discount rate the Bank also publishes is the same difference as a share of the face value, so it is a little lower. What you get through a bank or broker can differ slightly.

Sources: Bank of Ghana: Treasury bill rates

Questions people ask

What is the 91-day treasury bill rate today?: 4.6785% a year at the auction of 28 Sept 2026; the 182-day bill 6.37% and the 364-day bill 9.8339%.
How much interest does GH₵10,000 earn in a 91-day bill?: At 4.6785%, GH₵10,000 earns GH₵116.96 over 91 days, paid back as GH₵10,116.96 at maturity.
What is the difference between the discount rate and the interest rate?: Both describe the same bill. The discount rate is the gap between the price and the face value as a share of the face value; the interest rate is that gap as a share of the price you pay, which is what you earn on your money.

How it works

Questions people ask

What is the 91-day treasury bill rate today?

4.6785% a year at the auction of 28 Sept 2026; the 182-day bill 6.37% and the 364-day bill 9.8339%.

How much interest does GH₵10,000 earn in a 91-day bill?

At 4.6785%, GH₵10,000 earns GH₵116.96 over 91 days, paid back as GH₵10,116.96 at maturity.

What is the difference between the discount rate and the interest rate?

Both describe the same bill. The discount rate is the gap between the price and the face value as a share of the face value; the interest rate is that gap as a share of the price you pay, which is what you earn on your money.