Some private gains are created by shifting costs onto others. The Accord prices those costs at the source: carbon, methane, speculation, systemic financial risk, pavement destruction, public-health harms, aquifer depletion, interchange extraction, and labor-market undercutting.
Systemically important financial institutions (SIFIs) carry an implicit federal guarantee. The market correctly believes that in a crisis, the federal government would intervene to prevent a SIFI from failing — because the cascading failure would be catastrophic to the broader financial system. The 2008 crisis confirmed this implicit guarantee with explicit action.
The implicit guarantee is a subsidy with no fee. SIFIs benefit from a cost-of-funding advantage estimated by the GAO and IMF in the range of 30–80 basis points relative to non-SIFI banks of comparable risk. That funding-cost advantage compounds across the SIFI's balance sheet — measured in the tens of billions per year in transferred value across the SIFI population. Taxpayers carry the bailout risk; SIFIs collect the funding advantage.
The structural problem is that the guarantee is real, the subsidy is real, but the fee for the subsidy is zero. Without a fee, SIFIs face the wrong incentives at the margin: they become larger, more interconnected, and more substitutable-only-to-themselves over time, because each of those characteristics increases the implicit-guarantee value. The guarantee is socially necessary (the alternative, allowing cascading failure, is worse) but its unpriced existence is socially destructive over time.
Systemic-risk levy prices the implicit guarantee actuarially. The rate is calibrated to the empirically estimated funding-cost advantage — meaning the SIFI pays approximately what the guarantee is worth, capturing the subsidy as public revenue rather than as institutional surplus.
Revenue is ring-fenced to the Financial Stability Reserve — one of only two architecturally protected trusts in the Accord (the other is the Climate Adaptation Trust). The Reserve provides the cushion that the implicit guarantee otherwise drew from general taxpayers. When a future crisis requires intervention, the Reserve funds it; general taxpayers do not.
The architectural argument is that ring-fencing is appropriate where the externality requires multi-decade insulation from annual appropriation politics. Climate adaptation requires that insulation; financial stability requires it for the same reason. All other priced externalities flow to the General Fund.
Designated SIFIs. The current FSOC framework identifies the eight largest US banks plus certain non-bank SIFIs (insurance, asset management); the Accord operates on the same designation framework. Foreign-bank US operations meeting the size/interconnectedness threshold are subject to the levy on US-jurisdiction activity.
Smaller banks below the SIFI designation threshold pay no levy. Community banks, regional banks, and non-systemic institutions face no architectural change. Credit unions and small lenders are entirely outside the rule.
Depositors are protected by the existing FDIC architecture, which continues separately. The systemic-risk levy is about the institution's funding-cost subsidy, not about deposit protection — those are different programs.
Customers and counterparties of SIFIs are nominally affected only insofar as the SIFI passes the levy through; in practice, the architectural goal is to capture the subsidy at the institution rather than its customers.
Pending canonical scoring; routes to Financial Stability Reserve, not General Fund.
The levy's revenue is meaningful but not the primary point. The primary point is restoring fiscal-incentive alignment: SIFIs face a fee that reflects the implicit-guarantee value, removing the marginal incentive to grow into ever-larger size or ever-more-interconnected positions purely to capture more guarantee value.
The Financial Stability Reserve accumulates the levy revenue across years in which no crisis intervention is required. When a future crisis does require intervention (the historical pattern is roughly one major intervention per decade), the Reserve funds it — replacing the general-taxpayer-bailout pattern that produced the 2008 political backlash.
See tax ladder · fiscal scoring
- Cost-of-funding subsidy capture
- SIFIs pay a fee approximating the empirically estimated funding-cost advantage. The subsidy continues (the implicit guarantee is socially necessary) but its capture as institutional surplus stops.
- Threshold-fractionation games
- SIFI designation is based on size, interconnectedness, and substitutability — three orthogonal axes. A bank that splits its balance sheet to drop below the size threshold typically does so by increasing interconnectedness or substitutability, triggering designation through a different axis.
- Cross-border routing
- Foreign-bank US operations meeting the threshold pay the levy on their US activity. Routing through foreign affiliates does not avoid the rule for US-jurisdiction systemic-risk contribution.
- Non-bank SIFI emergence
- Insurance and asset-management entities meeting the systemic-risk criteria are designated and pay. The rule follows systemic risk, not the entity's nominal sector.
The architecture's most important closure is the implicit-subsidy capture itself. Adjacent closures cover the structural games that today optimize for guarantee-value capture.
- Financial Stability Reserve
- Ring-fenced trust receiving levy revenue. Funds future crisis intervention. One of two ring-fenced trusts in the Accord (other: Climate Adaptation Trust).
- FDIC
- Continues separately. Deposit insurance is its own program with its own fee structure (the FDIC assessment) — the SIFI levy does not displace it.
- Financial transactions tax
- FTT prices speculative trading activity. Systemic-risk levy prices implicit-guarantee subsidy. Different externalities, both priced.
- Speculation Brake macrogovernor
- Adjusts FTT rate within 0.10–0.25% corridor when National Statistics Board indices flag housing/equity surge. Systemic-risk levy is a structural rate, not a corridor rate.
- Corporate book minimum
- SIFIs are also C-corporations subject to the corporate rate + book minimum. The architecture taxes at every point of capture: corporate profit at the entity level, systemic-risk subsidy at the SIFI-specific level.
The systemic-risk levy is the architecture's response to the 2008-crisis lesson: implicit guarantees that carry fiscal risk should be priced. The Financial Stability Reserve is the cushion. The two are inseparable — pricing without cushion is just revenue; cushion without pricing is moral hazard.
The implicit guarantee is a market perception, not a contractual obligation. Pricing it via a levy turns the perception into a fiscal commitment, increasing — not decreasing — moral hazard. SIFIs will use the Reserve's existence as justification for ever-riskier balance-sheet positions, and the Reserve will be exhausted before a true crisis arrives.
The implicit guarantee is a market perception in the same way that the Sun rising tomorrow is a perception. It's a perception accurate enough that SIFI cost-of-funding empirically reflects it across decades. Pricing the subsidy doesn't create the commitment — it acknowledges the commitment that already exists in the structure of US financial-system regulation.
The moral-hazard concern is genuine but addressable through the supervisory architecture, which continues independently of the levy. The systemic-risk levy is a fiscal instrument, not a regulatory one — it captures the subsidy without displacing the prudential supervision (capital requirements, stress tests, resolution planning) that limits balance-sheet risk-taking. Together, the fiscal capture and the prudential supervision align incentives without removing them.
Reserve exhaustion is a real concern; the architecture's response is that the Reserve is sized to accumulate over multiple decades, with multi-decade insulation from annual appropriation politics. Even a 2008-scale intervention would draw on a Reserve that has been accumulating since enactment.