ERCF Capital Requirements vs. Stress Tests: The $185 Billion Gap

March 25, 2026 — This is the single most important set of numbers in the entire Fannie Mae and Freddie Mac debate. If you understand these numbers, you understand everything about why the conservatorships persist.

The Two Numbers

Number 1: $312+ billion — The minimum capital required under the Enterprise Regulatory Capital Framework (ERCF), the rule finalized by FHFA Director Mark Calabria in December 2020.

Number 2: $120-135 billion — The capital level consistent with the results of the FHFA's own Dodd-Frank stress tests, as calculated by Donald Layton (former Freddie Mac CEO) in his August 2022 analysis.

The gap: $185+ billion of capital that the ERCF demands beyond what is actually needed for safety and soundness.

To put that in perspective: $185 billion is larger than the GDP of 130 countries. It's nearly the entire amount the GSEs drew from Treasury during the financial crisis ($191 billion). And it serves exactly one purpose: to prevent Fannie and Freddie from ever having enough capital to exit conservatorship.

How Calabria Engineered the ERCF

Mark Calabria became FHFA Director in April 2019. Before that, he spent eight years at the Cato Institute — a libertarian think tank — as Director of Financial Regulation Studies. He was, by his own admission and public record, a long-standing critic of Fannie Mae and Freddie Mac.

Calabria didn't design the ERCF to ensure the safety of the GSEs. He designed it to shrink their footprint — to make them so expensive to operate that they would lose market share to private-label securitization and bank portfolio lending.

Here's how he did it:

1. Ignore the Stress Test Results

The Dodd-Frank Act requires the FHFA to conduct annual stress tests on both GSEs — modeling their performance under "severely adverse" economic conditions (deep recession, housing crash, unemployment spike). These tests are the gold standard for determining how much capital a financial institution actually needs.

In the 2022 stress tests, the combined loss for both GSEs under severely adverse conditions was approximately $4.5 billion. Not $45 billion. Not $450 billion. Four and a half billion. Both companies survived the apocalypse scenario with minimal damage.

In the 2025 stress test, under severely adverse conditions including a 38% home price decline, combined comprehensive income was $8.5 billion positive — meaning they made money even in the worst-case scenario.

The stress tests consistently show that $120-135 billion in capital is more than sufficient to absorb losses in the most extreme scenario regulators can model.

The ERCF ignores these results. It sets capital requirements at $312+ billion through a series of arbitrary add-ons that have no relationship to modeled risk.

2. Stack the Arbitrary Buffers

The ERCF includes multiple discretionary "buffers" and "floors" that inflate capital requirements far beyond any risk-based calculation:

• Prescribed Capital Conservation Buffer Amount (PCCBA): A mandatory buffer above the minimum, consisting of a stress capital buffer and a stability capital buffer.
• Stability Capital Buffer: Scales with the GSEs' market share — literally penalizing them for being successful. The larger their book, the more capital they need, regardless of the quality of the loans.
• Leverage Ratio: A blunt instrument that ignores the actual risk profile of different mortgage types. A 30-year fixed-rate loan to a borrower with 800 credit and 40% equity gets the same leverage treatment as a high-LTV loan to a marginal borrower.
• Multiple Capital Definitions: The ERCF has at least six different definitions of capital, each with its own minimum requirement. The binding constraint at any time is whichever definition produces the highest requirement.
• Risk-Weight Floors: Even the lowest-risk mortgages are subject to minimum risk weights that override the actual risk calculation. This means the ERCF can never produce a "low" capital requirement for any category, no matter how safe.

Tim Howard (former Fannie Mae CFO) has documented this in detail on his blog Howard on Mortgage Finance. He calls the ERCF "artificially calibrated" — a framework where the conclusion (high capital) was determined first, and the methodology was reverse-engineered to produce it.

3. Don't Count What Matters

Here's the real trick: the ERCF doesn't count the Treasury's $193 billion in senior preferred stock as capital. This is the stock that Treasury received in exchange for the bailout — stock on which the GSEs have already paid back $301+ billion in dividends.

The senior preferred has a liquidation preference of $341 billion (as of year-end 2024). This means Treasury gets paid $341 billion before any other claimant — including junior preferred shareholders and common shareholders — receives a cent.

But because the senior preferred doesn't count as regulatory capital under the ERCF, the GSEs' combined net worth of $179 billion (as of year-end 2025) is the only capital that counts. Against a $312+ billion requirement, that leaves a shortfall of over $130 billion.

If the senior preferred were counted — or better yet, restructured to reflect the $110+ billion in overpayment — the capital picture would look dramatically different.

What the Gap Really Means

For Homeowners

The $185 billion overcapitalization gap translates directly into higher mortgage rates. When the Biden administration directed the GSEs to set guarantee fees based on the ERCF (starting 2022), the average G-fee rose by approximately 0.07 to 0.10 percent.

On a $400,000 mortgage, that's roughly $280-400 per year in extra costs — not because the loan is riskier, but because a regulatory framework demands capital that stress tests say isn't needed.

Multiply that across the millions of mortgages guaranteed by Fannie and Freddie, and you're looking at billions of dollars per year extracted from homeowners to fund an overcapitalization that serves no safety purpose.

For the Market

The inflated capital requirements have already accomplished Calabria's goal of shrinking the GSE footprint. Since the ERCF was implemented:

• F&F's market share among new mortgages dropped to 37.6% in 2025 — the lowest in almost two decades
• Credit risk transfer volumes have declined
• The GSEs retain more concentrated credit risk than they would under a rational framework
• First-time homebuyer share dropped to historic lows

The ERCF isn't protecting anyone. It's redistributing market share from the GSEs to banks and private-label issuers — entities that don't have the same consumer protections, standardization, or 30-year fixed-rate commitments.

For Shareholders

The math is simple:

| Metric | Value | |--------|-------| | Combined GSE net worth (YE 2025) | $179.4 billion | | ERCF required capital | $312+ billion | | Shortfall at ERCF level | ~$133 billion | | Years to close gap (at $25B/yr retained earnings) | ~5-6 years | | Stress-test-implied capital need | $120-135 billion | | Surplus at stress-test level | $44-59 billion |

Read that last line again. Under any rational capital framework — one calibrated to the risk these companies actually face — Fannie and Freddie are already overcapitalized by $44-59 billion.

They could exit conservatorship tomorrow. The only thing preventing it is an arbitrary framework designed by a man whose stated goal was to shrink them out of existence.

What Needs to Happen

Donald Layton argues for reforming the ERCF. He's right that it should be reformed. But reform alone isn't enough. Here's what a complete fix looks like:

1. Replace the ERCF with a capital framework calibrated to stress test results — approximately $120-135 billion combined. Use the 2018 proposed rule (pre-Calabria) as the starting point, which Layton himself says was reasonable.

2. Restructure the PSPAs to reflect the reality that the bailout has been repaid with interest. Convert or retire the senior preferred. Reset the liquidation preference to account for the $301+ billion already paid.

3. End the conservatorships. Once the capital framework is rational and the PSPA structure is fair, there is no safety-and-soundness justification for continued government control of two companies generating $25 billion per year in profit.

The ERCF is the lock on the cage. Replacing it is necessary. But somebody also has to open the door.

---

The Key Sources

• Layton's stress test analysis (August 2022) — The paper that calculated the $120-135B figure
• ERCF Final Rule (FHFA)
• Freddie Mac 2025 10-K — See pages 85-86 for the six capital definitions
• Tim Howard's ERCF critique
• Fannie Mae capital disclosures

---

Related: The Main Article: Capital Requirements Are Conservatorship Theater | Donald Layton Timeline | The Conservatorship Capital Trap | Fanniegate | How to Invest in Fannie Mae | Privatization Guide

---

Disclosure: I hold Fannie Mae and Freddie Mac junior preferred shares across 26 series and have a direct financial interest in these companies. This is not financial advice.