Treasury 20-Year Auction Clears 5.42% as 10-Year Closes at 5.00%

The columned neoclassical facade of the United States Treasury Department building in Washington DC photographed at golden hour under an overcast autumn sky

The Treasury sold $13 billion of 20-year bonds on Tuesday, September 15, 2026, at a high yield of 5.420 percent, the highest yield any 20-year auction has cleared since the government brought the maturity back in May 2020. The sale broke the previous record of 5.245 percent set on October 18, 2023, and came in 21.6 basis points above the 5.204 percent that the August 19 auction produced. Bidders tendered $33.38 billion against the $13 billion on offer, a bid-to-cover ratio of 2.57. The composition of that demand is what unsettled the market. Indirect bidders, the category that captures most foreign central bank and overseas institutional buying, took 52.12 percent of the issue, the smallest share since February. Primary dealers, the firms obligated to backstop every auction, were left holding 16.74 percent, their largest takedown since December 2024. Yields rose across the curve after the 1:00 p.m. results crossed. The 10-year note closed at 5.00 percent on Treasury’s official par yield curve, its first close at or above that level since July 19, 2007. The result landed on the opening day of a two-day Federal Reserve policy meeting that concludes Wednesday afternoon, with the prime rate at 6.75 percent and the committee due to release its statement Wednesday afternoon.

Key Takeaways

  • Treasury’s 20-year bond auction cleared at 5.420 percent, a record for the maturity since its May 2020 return.
  • Indirect bidders took 52.12 percent, the smallest share since February; dealers absorbed 16.74 percent.
  • Direct bidders took 30.48 percent, the largest domestic-institution share ever recorded for this bond.
  • The 10-year note closed at 5.00 percent, its first close at that level since July 2007.
  • The prime rate has sat at 6.75 percent for 279 days, and the FOMC decides Wednesday.

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What the auction actually showed

Treasury reopened CUSIP 912810UX4, a bond maturing August 15, 2046, and accepted $13,000,008,600 against a $13 billion offering. The stop-out yield of 5.420 percent is the number that matters. Across all 78 auctions of the 20-year since Treasury revived the maturity on May 20, 2020, no sale had ever required a yield above 5.245 percent to clear. Tuesday’s result cleared that mark by 17.5 basis points in a single step. The progression through 2026 tells the story in order: 4.664 percent in February, 4.817 percent in March, 4.883 percent in April, 5.122 percent in May, 4.927 percent in June, 5.163 percent in July, 5.204 percent in August, and now 5.420 percent.

An empty institutional bond trading desk at dusk with rows of dark monitors displaying green and amber line charts under cool blue ambient light

The headline demand measure looked unremarkable. Bid-to-cover of 2.57 was slightly better than August’s 2.53 and roughly in line with the 2.36 to 2.86 band the maturity has traded in over the past year. That ratio compares total bids to the amount sold, and it can stay steady while the quality of the bidding deteriorates. Treasury got its $13 billion away without a failed sale. What it paid for that certainty was the highest borrowing cost the maturity has ever carried, on a security that will pay holders until August 2046. Run the arithmetic on the auction itself and 5.420 percent applied to $13 billion is about $705 million a year in yield cost.

Who bought, and who was left holding it

Treasury reports every auction in three buckets. Indirect bidders bid through a dealer and include foreign central banks, sovereign wealth funds and overseas asset managers. Direct bidders are domestic institutions that submit straight to Treasury. Primary dealers take whatever is left, because their designation requires them to bid at every auction. On Tuesday indirect bidders took $6.78 billion, or 52.12 percent. That is the weakest indirect share since the February 18 auction, which came in at 49.11 percent, and it sits well below the 71.20 percent that overseas accounts took at the June sale.

Direct bidders filled part of that gap and then some. Domestic institutions took $3.96 billion, or 30.48 percent, the largest direct share recorded at any 20-year auction since the maturity returned. The previous high was 27.06 percent in January. Primary dealers still ended up with $2.18 billion, or 16.74 percent, their heaviest load since December 2024 and double the 8.44 percent they carried in June. Dealer inventory is a live indicator, because bonds parked on dealer balance sheets have to be hedged or resold, and that selling pressure tends to push yields higher in the sessions after an auction. The pattern of Tuesday’s sale, weak overseas participation offset by domestic buyers and dealers, is the one that has preceded most of this year’s back-ups in long yields.

The 10-year closes at 5.00 percent

The auction result moved the whole curve. Treasury’s official daily par yield curve put the 10-year note at 5.00 percent on September 15, up from 4.97 percent on Monday. Working back through Treasury’s daily series, the last close at or above 5.00 percent was July 19, 2007, when the 10-year finished at 5.04 percent. The 20-year finished Tuesday at 5.40 percent, its highest close since June 12, 2007. The 30-year settled at 5.36 percent and the 2-year at 4.67 percent, the highest 2-year close since July 3, 2024.

The brick and glass exterior of a suburban American bank branch on an overcast morning with a bare maple tree and empty parking spaces in the foreground

The move is not confined to the long end. The 3-month bill closed at 4.11 percent and the 1-year at 4.39 percent, both well above the 3.63 percent effective federal funds rate the New York Fed has reported since the July meeting. Short bill yields above the funds rate are the market pricing a policy rate that goes up rather than down. Since September 9 the 2-year has added 24 basis points and the 10-year 17 basis points. You can track those levels on our Treasury yield curve page. Meanwhile the debt those yields finance keeps growing: total public debt outstanding stood at $40,054,421,967,786.91 on September 14, split between $32.36 trillion held by the public and $7.70 trillion in intragovernmental accounts.

What a 5.42 percent long bond does to your rates

Long Treasury yields and the prime rate move on different tracks, and confusing them leads to bad decisions. The prime rate is set by banks at 3 percentage points above the upper bound of the Fed’s target range. The Fed’s H.15 release shows the bank prime loan rate at 6.75 percent, unchanged since December 11, 2025, which is 279 days. Nothing that happened at Tuesday’s auction changes that figure. Credit card APRs, home equity lines and most variable-rate personal loans are priced off prime, so they stay where they are until the FOMC moves the target range. Our guide on how Fed decisions reach your loans walks through that chain.

Fixed borrowing costs are a different matter. Lenders price 30-year mortgages off the 10-year Treasury plus a spread, so a 10-year at 5.00 percent feeds into mortgage rates within days. The same yields work in savers’ favor. Bank deposit pricing follows short Treasury yields with a lag, and with the 1-year bill at 4.39 percent, competitive CD rates and high-yield savings accounts have room to hold their current levels. For borrowers carrying revolving balances, a fixed-rate personal loan locks a rate now rather than floating with prime through whatever the Fed decides Wednesday and at the October 27 to 28 meeting.

Pro Tip: If you are shopping a mortgage, ask your lender how long the quoted rate is locked and what the extension costs. The 10-year Treasury moved 17 basis points in five sessions, and a lock that expires mid-process can reprice your loan. If you are sitting on cash instead, compare a 12-month CD against your savings account this week rather than next. Short Treasury yields at 4.39 percent are what banks price deposits against, and those offers reset quickly once the Fed acts.

Frequently asked questions

How was the bond auction today?

Treasury’s 20-year bond auction on September 15, 2026 cleared at a high yield of 5.420 percent, the highest yield the maturity has ever required since it returned in May 2020. Treasury sold $13 billion and received $33.38 billion in bids, a bid-to-cover ratio of 2.57. Indirect bidders took 52.12 percent, direct bidders 30.48 percent and primary dealers 16.74 percent. The record yield paired with the weakest foreign share since February is what made the result stand out.

What is the 20-year Treasury yield right now?

Treasury’s official daily par yield curve put the 20-year at 5.40 percent at the September 15, 2026 close, up from 5.37 percent the day before and 5.28 percent on September 9. That is the highest 20-year close since June 12, 2007, when the yield finished at 5.44 percent. The auction stop-out yield of 5.420 percent and the par curve reading differ slightly because one is a single sale at a point in time and the other is Treasury’s end-of-day fit across all outstanding securities.

Are bond yields rising today?

Yields have risen across every maturity over the past week. Between September 9 and September 15, Treasury’s par curve shows the 2-year up from 4.43 percent to 4.67 percent, the 10-year up from 4.83 percent to 5.00 percent, the 20-year up from 5.28 percent to 5.40 percent and the 30-year up from 5.28 percent to 5.36 percent. Short bills moved too, with the 3-month up from 3.95 percent to 4.11 percent. The Wednesday FOMC statement is the next event that can reset those levels in either direction.

Is now a good time to buy 20-year Treasury bonds?

That depends on your time horizon, tax situation and what else is in your portfolio, and this article is not investment advice. The factual picture: a 20-year bought at Tuesday’s 5.420 percent locks that coupon for two decades, which is the highest the maturity has offered since 2020. The offsetting risk is that if yields keep climbing, the market value of that bond falls, and you only avoid that loss by holding to maturity in 2046. Compare the yield against a short CD before committing capital for 20 years.

Does this auction change my credit card APR?

No. Credit card APRs are tied to the prime rate, not to Treasury auction results. The Fed’s H.15 release lists the bank prime loan rate at 6.75 percent, where it has stood since December 11, 2025. Prime moves only when the FOMC changes the federal funds target range, and banks then reset prime at 3 percentage points above the upper bound. If the Fed raises rates on Wednesday, most variable APRs adjust within one or two billing cycles. Until then, Tuesday’s auction leaves your card rate untouched.

What does a record auction yield cost taxpayers?

Every basis point Treasury pays at auction becomes an interest obligation for the life of the security. A 5.420 percent yield on $13 billion works out to about $705 million a year through August 2046. Total public debt outstanding reached $40,054,421,967,786.91 on September 14, 2026, and Treasury refinances a large share of that stack every year. When maturing securities issued at lower rates roll into new ones priced at current yields, the average rate on the whole debt drifts upward, which is what pushes annual interest costs higher.

Watching the Wednesday decision

The FOMC releases its statement and a fresh Summary of Economic Projections Wednesday afternoon, the second day of the September 15 to 16 meeting confirmed on the Federal Reserve’s calendar. Whatever the committee decides, the 20-year auction has already priced part of the answer: long-term borrowing costs at levels the country has not seen since 2007. The next 20-year sale is scheduled for October, and the following FOMC meeting runs October 27 to 28. Track the policy rate on our current prime rate page, the borrowing stack on the US debt hub, and the committee outlook in our Fed rate forecast for 2026.

References

  1. U.S. Department of the Treasury, Fiscal Data, Treasury Securities Auctions Data, auction dated September 15, 2026, CUSIP 912810UX4.
  2. U.S. Department of the Treasury, Daily Treasury Par Yield Curve Rates, September 15, 2026 and historical series.
  3. Board of Governors of the Federal Reserve System, H.15 Selected Interest Rates, released September 15, 2026.
  4. Board of Governors of the Federal Reserve System, FOMC Meeting Calendars, 2026 schedule.
  5. U.S. Department of the Treasury, Fiscal Data, Debt to the Penny, record date September 14, 2026.
  6. Federal Reserve Bank of St. Louis, Bank Prime Loan Rate (DPRIME), observations through September 9, 2026.
  7. TreasuryDirect, Auction Announcements, Data and Results, September 2026.

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