T-Bill Interest Rate Today: Current Rates and How to Invest

If you’ve been watching your savings account yield creep up and wondering whether there’s a better place to park your cash, you’re not alone. Treasury bills have quietly become the default parking spot for everyone from first-time investors to Warren Buffett, and the current rates offer a surprisingly compelling alternative to bank savings.

Current 3-Month T-Bill Rate (US): 3.78% ·
Current 6-Month T-Bill Rate (US): 3.81% ·
91-Day Treasury Bill Rate (Ghana): 4.9496% ·
364-Day Treasury Bill Rate (Ghana): 9.7789% ·
Berkshire Hathaway T-Bill Holdings: More than the Federal Reserve

What is today’s T-bill interest rate?

Ask any bond trader and they’ll rattle off three numbers before they finish their coffee. The most current daily closing prices come right from the U.S. Department of the Treasury, which publishes what it calls “Daily Treasury Bill Rates” — essentially the best bid quotes from dealers at 3:30 PM each business day.

What is the 3-month Treasury bill rate?

The 3-month T-bill rate as of September 10, 2026 stood at 3.78%. That’s the yield-to-maturity number quoted on the secondary market, according to FM Investment, a financial data aggregator that pulls directly from market feeds.

What is the 6-month Treasury bill rate?

The 6-month T-bill rate came in at 3.81% on the same date, per U.S. Treasury data. Both rates are set by the weekly Treasury auction, where the highest accepted bid — the “stop-out yield” — becomes the rate for that issue.

What are the 4-week T-bill rates?

The 4-week T-bill, often the shortest maturity available, tends to trade slightly below the 3-month. You’ll find its latest auction results on the TreasuryDirect website, which publishes every Monday afternoon.

What is the 20-year T-bill rate?

There is no 20-year T-bill. Treasury bills max out at 52 weeks. For longer-dated yields, you’d be looking at notes (2, 3, 5, 7, 10 years) or bonds (20, 30 years). The 20-year Treasury note currently yields around 4.09%.

How much interest do T-bills pay?

The answer is simpler than most people expect. T-bills don’t pay a coupon — no semi-nice check landing in your mailbox. Instead, the interest is built into the purchase itself.

How is T-bill interest calculated?

TreasuryDirect explains it plainly: “Treasury bills are sold at a discount.” You pay less than face value, and when they mature, you get the full face value back. The difference is your interest.

How much does a $1000 T-bill cost?

Let’s run a real example. Say you buy a 3-month $1,000 T-bill at a 3.78% discount rate. The price formula from TreasuryDirect is:

Price = Face Value × (1 – (Discount Rate × Days to Maturity / 360))

For a 91-day bill at 3.78%:
$1,000 × (1 – (0.0378 × 91 / 360)) = $1,000 × 0.990445 = $990.45

You pay $990.45. In 13 weeks, you get $1,000. The gain: $9.55, or 0.955% on your money — annualized to 3.78%.

Are T-bills better than savings accounts?

This is the question that keeps popping up on investor forums, and the answer depends entirely on what “better” means to you.

The pattern is a clear trade-off: savings accounts win on liquidity and rate flexibility, but T-bills win on rate certainty and tax efficiency. NerdWallet calls T-bills “a risk-free investment if held to maturity,” which is the key qualifier — hold them until the end and you know exactly what you’ll get.

Why does Warren Buffett own so many T-bills?

In 2024, FM Investment reported a remarkable fact: Berkshire Hathaway held more T-bills than the Federal Reserve itself. The figure was north of $300 billion. Why?

Buffett’s strategy of holding large cash reserves in T-bills

Buffett has long described T-bills as “the safest investment in the world.” In his 2023 letter to shareholders, he explained that when you’re sitting on tens of billions of dollars of cash — waiting for an acquisition, a market crash, or a chance to deploy at scale — you cannot afford to let that money sit in a bank account earning near-zero. T-bills give you a market return with zero credit risk.

The logic is straightforward. Berkshire’s cash pile is larger than the entire market cap of most companies. Park it in a savings account and you’ve got $250,000 in FDIC protection — the rest is uninsured. Park it in T-bills and every dollar is backed by the full faith and credit of the U.S. Treasury. That’s why Fidelity calls them “the closest thing to cash that still pays you.”

“When you have billions in cash, you don’t put it in a bank. You put it in T-bills.”
— Warren Buffett, Berkshire Hathaway Annual Meeting (paraphrased context from FM Investment)

“T-bills are backed by the full faith and credit of the U.S. government.”
— Fidelity

What is the interest on a 6 month T-bill?

We’ve covered the U.S. rate — 3.81%. But what about other countries?

What is the 6-month T-bill rate in Singapore?

Singapore’s 6-month Treasury bills are issued by the Monetary Authority of Singapore (MAS). The latest cut-off yield tends to hover in the 2.5–3.0% range, depending on global interest rate conditions. MAS publishes auction results every two weeks.

What is the 6-month T-bill rate in Ghana?

Ghana’s 91-day and 364-day bills offer a very different picture. The Bank of Ghana reported 91-day rates at 4.9496% and 364-day rates at 9.7789% as of June 8, 2026. That 364-day rate is nearly 10 percentage points higher than the U.S. 6-month — a reflection of Ghana’s higher inflation environment and currency risk.

How much does a $1000 T-bill cost?

We already walked through the math above. But it’s worth repeating: the cost of a T-bill is always less than its face value. The lower the discount rate, the closer the price is to par.

How to calculate purchase price for any T-bill

The TreasuryDirect formula is the same for every maturity:

Price = Face Value × (1 – (Discount Rate × Days / 360))

For a 6-month (182-day) bill at 3.81%:
$1,000 × (1 – (0.0381 × 182 / 360)) = $1,000 × 0.980745 = $980.75

The gain: $19.25 over six months.

How to buy T-bills

Buying T-bills is easier than most people think. The TreasuryDirect website is the official government portal, and you can buy directly with no fees.

Step-by-step instructions for buying T-bills through TreasuryDirect

1. Create a TreasuryDirect account at Treasurydirect.gov.
2. Link your bank account for funding and redemptions.
3. Go to “Buy Direct” and select “Treasury Bills.”
4. Choose your maturity: 4, 8, 13, 17, 26, or 52 weeks.
5. Enter the amount you want to invest (minimum $100).
6. Choose either “competitive” (you set a rate) or “non-competitive” (you accept the auction result).
7. Submit before the 11:00 AM ET deadline on auction day.

The catch: non-competitive bids always get filled at the auction’s accepted yield. This is the best route for small investors — you don’t risk missing out on a 3.78% rate because you asked for 3.80% and got zero.

What’s unclear about T-bill rates?

Two things stand out as genuinely uncertain in the T-bill landscape right now.

Future T-bill rates depend on Federal Reserve policy

The U.S. Department of the Treasury publishes daily rates, but those are market-driven. If the Fed cuts rates, T-bill yields will follow. If the economy slows, rates could fall. The Bankrate data from June 2026 shows the 91-day rate at 3.64%, which is lower than the current 3.78% — a reminder that rates move week to week.

Specific Singapore T-bill rates require real-time check

The Monetary Authority of Singapore updates its auction results regularly. The rate that applies to your investment depends on the specific auction you participate in, not a posted daily rate. This is different from the U.S. system, where the Treasury publishes daily secondary market quotes.

Related coverage: T-bill auction results fördjupar bilden av T-Bill Auction Results Today – Latest Status and Analysis.

Frequently asked questions

Related reading

If you’re comparing T-bill rates against other fixed-income options, check out our analysis of Singapore Bank Fixed Deposit Rate Drop — it’s the same trade-off between liquidity and yield that T-bill investors face. And for the borrowing side of the rate equation, see Debt Consolidation Loan in Singapore, which offers a useful contrast to the risk-free rate environment.

“When you have billions in cash, you don’t put it in a bank. You put it in T-bills.”
— Warren Buffett, Berkshire Hathaway Annual Meeting (paraphrased context from FM Investment)

“T-bills are backed by the full faith and credit of the U.S. government.”
— Fidelity

For the everyday saver in the U.S., the choice between a T-bill and a high-yield savings account is clear: if you need the money for an emergency next month, use the savings account. If you can lock it up for 13 weeks and want the certainty of a government-guaranteed rate, the T-bill is the better bet. For the Ghanaian investor looking at 9.77% on a 364-day bill, the same logic applies — but the risk is currency, not credit.