The simple version

There are two ways to buy a new Treasury security directly. You can name the yield you want, or you can skip that and take whatever the sale settles on.

Naming a yield makes you a price-setter, and price-setters can be turned away or cut back. Skipping it makes you a price-taker.

Most people assume the second way is the worse one. Under the rules it is the opposite: price-takers are filled first, in full, and at the same price the price-setters end up paying.

The numbers

• Treasury Department, Bureau of the Fiscal Service, final rule amending the Uniform Offering Circular for the Sale and Issue of Marketable Book-Entry Treasury Bills, Notes, and Bonds, 31 CFR part 356, citation 91 FR 65456, published and effective October 15, 2026 (Federal Register document 2026-21069)
• The circular was first published as a final rule in January 1993, at 58 FR 412 (same document, background)
• Definition in 31 CFR 356.2: for a single-price sale, a noncompetitive bid is a bid to purchase a stated par amount of securities at the high yield, high discount rate, or high discount margin awarded to competitive bidders (same document, amended text)
• For a multiple-price sale the same definition sets the noncompetitive price at the weighted average yield, discount rate, or discount margin of awards to competitive bidders (same document)
• Award order under 31 CFR 356.20(a)(1): after the competitive portion closes, Treasury awards noncompetitive bids first, subject to the noncompetitive limits in the part, then awards competitive bids from the lowest yields upward until the offering amount is met (same document)
• Under the same paragraph, if noncompetitive bids would absorb all or most of the offering amount, Treasury will still award enough competitive bids to provide a fair determination of the yield (same document)
• Under 31 CFR 356.20(d)(1) for single-price sales, both noncompetitive and competitive bidders receive the price equivalent to the high yield, high discount rate, or high discount margin at which bids were awarded (same document)
• Proration under 31 CFR 356.21(a) applies to bids at the high yield. The document's example: if the announced percentage is 80.15%, a bid for $100 million at the high yield is awarded $80,150,000 (same document)
• A second example in the same paragraph: an $18,000 bid at the high discount rate with 88.27% awarded is rounded up from $15,888.60 to $15,900, the nearest multiple of $100 (same document)
• A third example: where 4.65% of bids at the high discount rate are awarded, a $100 bid is awarded $100 rather than $4.65, in order to meet the minimum to bid (same document)
• What changed on October 15: definitions of adjusted value, dated date, index ratio, issue date and settlement amount were revised, a reference to paper bids was removed from 31 CFR 356.11(a)(2) because they are no longer accepted, and the words award and recognize replaced accept and tender in 31 CFR 356.20 and 356.23 (same document)
• The document states that none of the definitional changes affect the calculation of the adjusted value, index ratio or settlement amount for inflation-protected securities (same document)
• Also changed: submitters of noncompetitive customer bids must provide each individual customer's name and bid amount before the noncompetitive close, and may no longer submit a summary amount (same document, 31 CFR 356.14(c) and (e))
• Applicability: the changes to 31 CFR 356.14 and 356.23 apply beginning with the first sale conducted on Treasury's upgraded system, which the document says will be communicated to market participants in advance. All other changes apply as of the effective date (same document, DATES)

How the fill order works

The order is the part worth knowing. Price-taker orders are settled first, before any price-setting order is filled, and they come off the top of the amount on offer.

Then the price-setters are worked through from the lowest yield upward until the amount on offer runs out. The last yield that still gets filled is the one everyone pays against.

That last group is where the squeeze happens. Demand at that final yield usually exceeds what is left, so those orders get cut back by a published percentage.

Price-takers never sit in that group, because they were settled before it. They are also protected from the reverse problem: if they would take up the whole amount on offer, the rules require enough price-setting orders to be filled anyway, so a yield still gets set fairly.

The actual math the rules do publish

This is unusual for a government document: the offering rules show their arithmetic, with three worked examples. All three concern the cut-back, which is the mechanic a small buyer avoids.

First example. With 80.15% announced, a $100 million order at that final yield is filled at $80,150,000, which is a straight multiplication.

Second example. An $18,000 order with 88.27% applied works out to $15,888.60, and the rules round that up to $15,900 so the result lands on a multiple of $100. The rounding runs in the buyer's favor.

Third example shows the floor. Where only 4.65% applies, a $100 order is still filled at the full $100 rather than $4.65, because a fill cannot fall below the minimum to buy.

What this means

The useful correction is about who carries the uncertainty in a Treasury sale. It is not the small buyer who declines to name a yield.

Naming a yield buys the chance of a better price and the risk of getting less than asked for, or nothing. Declining to name one gives up that chance and takes the settled price with a full fill.

The rewrite itself is mostly housekeeping, and the document says the definitional edits change no inflation-protected calculation. One piece is not in force yet: the customer-detail requirement waits for an upgraded system, with no date published.

What this is NOT

This article explains what a noncompetitive bid is and where it sits in the award order, using the Treasury Department final rule amending the Uniform Offering Circular at 31 CFR part 356, citation 91 FR 65456, published and effective October 15, 2026, read on October 19, 2026. It is not advice to buy, avoid, size or time any security, it recommends no bidding method over another, and nothing here suggests that Treasury securities, or any other holding, suit anyone's situation. It is not a claim about what yield any future sale will produce, and the percentages shown are the document's own illustrative examples rather than real results. It does not state the noncompetitive purchase limit: the document refers to limits set elsewhere in the part without restating them, and this article will not supply a figure the source does not give. It does not describe how to open or operate any account, and it is not a guide to any purchasing platform. It does not cover the bid-to-cover ratio, the measure of total demand against the amount offered, which is a separate question handled on its own page. It is not a complete account of the offering rules, which run to many sections and appendices. It does not name the official who signed the document or the staff listed as contacts. This is not a political endorsement or criticism of anyone.

Sources

• Department of the Treasury, Bureau of the Fiscal Service, Sale and Issue of Marketable Book-Entry Treasury Bills, Notes, and Bonds, final rule, 31 CFR part 356, citation 91 FR 65456, published and effective October 15, 2026, read October 19, 2026: https://www.federalregister.gov/documents/2026/10/15/2026-21069/sale-and-issue-of-marketable-book-entry-treasury-bills-notes-and-bonds