The Done-Away Gap — Signal Scan

The Done-Away Gap: Treasury Clearing's Big Bang Arrives Before the Market Structure It Assumes

With the SEC's cash Treasury clearing deadline fixed for 31 December 2026 and repo following in June 2027, done-away clearing capacity has not materialised, concentrating access-model, margin and repapering decisions that dealers, funds, custodians and non-US banks must take this cycle.

The consensus on the SEC's Treasury clearing mandate is that the hard part is over: deadlines extended once, two new clearinghouses approved, cleared volumes climbing, no further extension coming. Beneath that reassurance sits a quieter problem. The market structure the rule assumes, in which firms execute with any counterparty and clear through a separately chosen agent, does not yet exist at scale. Treasury's advisory committee told the Secretary in May that clearing may not be available to all participants in all regions at the 31 December 2026 cash go-live. On the evidence below, a once-in-decades overhaul of the world's core funding market is landing as a concentration event.

Signal Identification

A regulatory pivot crossing into operational reality: the rule is final, the dates fixed, the gap executional. The weak signal is the widening distance between the clearing model the SEC designed around, done-away and multi-CCP, and the concentrated done-with model the market is converging on as the deadline approaches.

Time horizon: 0–2 years (cash go-live 31 December 2026; repo 30 June 2027; market shares set by 2028) Plausibility band: High Geographic / Jurisdictional Scope: United States primary; spillover to non-US banks and asset managers in the UK, EU, Japan and Asia-Pacific through the rule's extraterritorial reach Sectors exposed: Broker-dealers and FCMs; leveraged funds; money market funds; asset managers; custodians; clearinghouses; treasuries running Treasury repo

What's Changing

The official readiness picture is double-edged. The Treasury Borrowing Advisory Committee's May charge records momentum: cash activity potentially subject to clearing averaged approximately $550 billion a day in 2025, up approximately 20% on 2024; FICC's sponsored repo volumes rose over 150% in two years to $2.856 trillion; and the OFR estimates approximately 58% of mandate-covered repo is already cleared (US Treasury (TBAC), 05/05/2026). The same document reports fewer than one in three firms very familiar with done-away clearing and 88% unable to finalise preparation without more operating-model clarity.

Scope is being decided this quarter, not in 2023. In April the SEC published SIFMA's request to widen the inter-affiliate exemption and reopened the IIB request to carve out trades between non-US institutions executed offshore, while staff assess failed trades, clearing-agency outages and customer protection (SEC, 20/04/2026). SIFMA argues the current exemption's outward-facing condition effectively negates its utility (SIFMA, 10/04/2026). The margin architecture is arriving late: customer cross-margining between FICC and CME was approved only in April (SEC, 15/04/2026); CME advertises savings of up to 80% and daily margin reductions exceeding $1 billion (CME Group, accessed 06/07/2026).

Six months out: industry readiness signals behind the TBAC assessment

Source basis: BNY, Broadridge, DTCC and SIFMA pulse survey (August 2025), reported in US Treasury (TBAC), Central Clearing Implementation, May 2026.

Disruption Pathway

The pathway runs in three stages. To 31 December 2026, cash clearing goes live while exemption decisions are still settling the perimeter; with done-away documentation unstandardised and pricing unclear, participants default into done-with sponsored clearing at FICC, the path of least repapering. Through 30 June 2027, the repo leg pulls in leveraged and money funds and margin becomes the binding cost: the Chicago Fed estimates collateral for a hedged ten-year basis trade roughly doubles to around $20 million without cross-margining, but could fall below today's levels with it (Federal Reserve Bank of Chicago, 01/2026). From 2027, go-live clearing shares harden.

Stresses concentrate at the documentation backlog, where bespoke done-with agreements take months to years to negotiate (US Treasury (TBAC), 05/05/2026); at firms whose builds are frozen until the inter-affiliate and extraterritorial scope is fixed; and at non-US participants trading across time zones with no 24-hour clearing. Two adaptations follow. Regulatory: targeted exemptive relief that shrinks the perimeter rather than moves the date. Operational: flow consolidates onto FICC's established models, because CME's clearinghouse launches only during 2026 and ICE Clear Credit was registered in January, leaving neither a track record at go-live (SEC, 20/04/2026).

Why This Matters

For boards of dealers, custodians, asset managers and non-US banks this is an execution decision, not a monitoring item. The access-model choice (sponsored, agent-cleared or direct) fixes margin, netting, accounting treatment and default-fund exposure for years; onboarding queues and documentation lead times mean firms that wait for perfect clarity inherit whatever access is left. Treasurers need collateral budgets that survive cleared margin; non-US institutions need a position on restructuring inter-affiliate and offshore flows before the SEC rules on the exemptions (US Treasury, 06/05/2026). The committee advising the US Treasury has said some participants may reach the deadline without clearing access; being among them is now a choice.

Decision-action posture for this signal: Decide — the cash deadline sits inside the current planning cycle; deferring access-model, repapering and collateral decisions defaults the firm into the concentrated outcome.

Counter-Argument

The strongest objection: this is transition noise dressed up as market structure. Treasury's evidence shows voluntary migration running ahead of the mandate, with sponsored volumes up over 150% in two years and 47% of surveyed firms very confident, another 41% somewhat confident, of meeting the deadlines (US Treasury (TBAC), 05/05/2026). The SEC has approved two competing clearinghouses and customer cross-margining, and the Chicago Fed's arithmetic shows cleared basis trades could end up cheaper than bilateral ones once cross-margining extends to clients (Federal Reserve Bank of Chicago, 01/2026). Swaps clearing produced the same late-cycle anxiety, and the market absorbed it.

Even if that reading is right about go-live, it concedes the mechanism. Each remediation now in motion, sponsored access, collateral-in-lieu, FICC–CME cross-margining, deepens the incumbent's netting pool before a competitor clears its first trade. A transition that succeeds through done-with concentration still leaves execution bundled to clearing, single-CCP operational dependency, and pricing power over the plumbing of a $29 trillion market. The objection explains why the deadline holds, not why concentration unwinds.

Implications

This catalyses durable change: clearing markets are sticky because netting benefits compound wherever flow already sits, so shares set in 2027 will describe the market into the 2030s. The inflection window is the next twelve months. Positioned to gain: FICC and its sponsoring dealers, early-repapered buy-side firms, and agent clearers selling done-away capacity into scarcity. Exposed: late movers, smaller non-US banks weighing retreat from US-cleared activity, and, in stress, market liquidity itself if margin procyclicality binds where the Chicago Fed's collateral arithmetic says it can (Federal Reserve Bank of Chicago, 01/2026).

Early Indicators to Monitor

SEC orders on the SIFMA inter-affiliate and IIB extraterritorial requests: relief granted broadly, capped, or denied.
First cleared Treasury volumes published by CME Securities Clearing, and an announced ICE Clear Credit go-live date.
DTCC's monthly sponsored and agent-clearing volumes through Q4 2026, and any capacity statements.
SEC staff guidance on failed trades, clearing-agency outages and customer protection, the three open items Commissioner Uyeda has named.
Uptake of customer cross-margining after the April 2026 FICC–CME expansion, and the proposed Basel treatment of cross-margined client positions.

Disconfirming Signals

Broad inter-affiliate and extraterritorial relief granted in Q3 2026, materially shrinking the mandated perimeter and the concentration risk with it.
Standardised done-away documentation adopted, with several agent clearers quoting competitive pricing before December 2026.
CME or ICE winning visible cash-clearing share from FICC within two quarters of launch.
A further SEC extension of the compliance dates, despite the Commission's stated intention not to consider one.
A clean January 2027: no widening in bid-ask spreads, repo rates or settlement fails attributable to go-live.

Strategic Questions

Which access model and clearinghouse should the firm commit to now, before onboarding queues make the choice for it?
Should non-US desks restructure inter-affiliate and offshore Treasury flows ahead of the SEC's exemption rulings, or hold and risk forced clearing?
At what cleared-margin cost does deferring repo repapering to 2027 stop being worth the option value?

Keywords

US Treasury clearing mandate; SEC Treasury Clearing Rule; central clearing; FICC; done-away clearing; sponsored repo; cross-margining; CCP concentration; Treasury repo; basis trade.

Bibliography

Source tiers: Tier 1, governments, regulators and intergovernmental bodies. Tier 2, think-tanks, academic institutes, major consultancies and quality data providers. Tier 3, quality journalism and specialist trade press. Tier 4, vendor, company and practitioner sources, used only as directional corroboration.

Tier 1 Central Clearing Implementation, TBAC Charge 1, Q2 2026. US Department of the Treasury (TBAC) (05/05/2026).
Tier 1 Minutes of the Meeting of the Treasury Borrowing Advisory Committee, May 5, 2026. US Department of the Treasury (06/05/2026).
Tier 1 Update on the SEC's Work Toward Treasury Clearing Implementation. US Securities and Exchange Commission (20/04/2026).
Tier 1 SEC Approves Customer Cross-Margining in the U.S. Treasury Market (press release 2026-36). US Securities and Exchange Commission (15/04/2026).
Tier 2 The Treasury Clearing Mandate and the Basis Trade, Part 2: The Possible Role of Cross-Margining, Chicago Fed Letter No. 517. Federal Reserve Bank of Chicago (01/2026).
Tier 3 Request for Exemptive Relief from the Clearing Rule for Certain Inter-Affiliate Transactions. SIFMA (10/04/2026).
Tier 4 CME-FICC Cross-Margin Program. CME Group (evergreen reference page, accessed 06/07/2026).