The US Treasury is set to sell $70 billion in 5-year notes, and borrowing costs continue to climb. In the when-issued market, where traders position ahead of the actual auction, the 5-year yield stands at 4.391%, just below July’s auction high of 4.408%.

The auction is scheduled for August 26.

Rising 5-year yields through 2026

Five-year Treasury yields have moved steadily higher in 2026. In March, the auction cleared at 3.980%. By June, that figure had risen to 4.200%, and July pushed it further to 4.408%.

That represents an increase of roughly 40 basis points over five months. So far this year, 5-year yields have traded in a range between 3.6% and 4.4%, placing current levels near the top of that band.

Demand remains steady

Recent 5-year auctions have posted bid-to-cover ratios between 2.29x and 2.35x. That indicates participation from both domestic institutions and foreign buyers. Strong foreign demand is often interpreted as a sign of confidence in US fiscal credibility. If overseas buyers step back, domestic investors and primary dealers must absorb more supply, which can push yields higher.

The 5-year note sits in a part of the curve that is closely watched because it can reflect how investors are balancing short-term policy expectations against longer-run financing conditions. For that reason, even routine auctions can become a useful read on demand for US government debt, especially when yields are already near the upper end of the year’s trading range.

Why the auction matters

The Treasury’s auction calendar reflects the federal government’s need to finance its deficit. Each auction is a direct transaction between the US government and investors willing to lend money to it. The yield at which the notes clear is effectively the price the government pays to borrow.

A $70 billion sale is not unusual for this maturity. The Treasury has not introduced extraordinary supply increases or deviated from its standard issuance pattern in recent months.

Key figures to watch

Three figures will shape the market’s read of the auction results.

First is the high yield. If it comes in above 4.408%, the market may interpret that as softer demand or higher rate expectations. If it clears below the when-issued level of 4.391%, that would be viewed as a strong result, often described as a “stop through,” meaning demand was greater than expected.

Second is the bid-to-cover ratio. A reading below 2.2x would draw attention, while a result above 2.4x would point to stronger appetite.

Third is the allocation to indirect bidders, which serves as a proxy for foreign central banks and overseas institutional investors. A drop in that category would be a warning sign for observers tracking global confidence in US government debt.