We’ve Burned the Cushion Right Before the Biggest Refi Year in Modern History
This line is basically a stress barometer for the financial system. It measures how much easy, ready to use cash sits inside banks (reserves and reverse repo) relative to total deposits. When it’s high, everything feels effortless. Repo trades clean, Treasury auctions go smoothly, and calendar swings don’t matter.
When it’s low, the system still works but it gets touchier. Small timing mismatches start to matter. Settlement days matter. Suddenly the pipes have less room to absorb shocks.
We’ve been here before. Every time this gauge dips under that 16% area, something in the plumbing eventually creaks. In 2019, it wasn’t the economy that snapped, it was the funding market. A routine cluster of tax payments and settlements hit thin reserves, repo rates exploded overnight, and the Fed had to step in immediately. The lesson is simple…you don’t see plumbing problems until they’re already happening.
What Makes This Drop Different From the Others
In the earlier troughs, the story was straightforward where reserves got low, and there wasn’t much of a backup buffer. The system was fragile, but fragile in a clean, recognizable way.
This time is different because the past 2 years came with a massive safety valve with the Fed’s reverse repo facility. At its peak, money funds had more than $2 trillion parked there. That pile of cash acted like a shock absorber. QT could run, Treasury could issue aggressively, and the system barely felt it because RRP quietly soaked up the pressure.
But now that cushion has basically vanished. RRP is back near zero, and reserves are drifting into the same zone that preceded the 2019 funding spike. So we’re hitting the low liquidity area after burning through the giant buffer that kept everything calm the past two years.
That’s the part worth underlining:
every previous trough came with low reserves but no prior cushion. This trough comes with low reserves and an exhausted cushion. It’s a thinner margin than the chart makes obvious at first glance.
That’s why the Fed is already nudging bill purchases back into the conversation. They’re trying to make sure the pipes don’t rattle at the worst possible moment.
What Happens If This Line Keeps Slipping
If this gauge inches lower, the first cracks won’t show up in stocks. They’ll show up in the money markets…sloppy bill auctions, noisy repo prints, odd funding spreads. That’s how it always starts.
And here’s the bigger point..we’ve NEVER gone into a massive refinancing year at this scale with $9T of U.S. government debt, $1.8T in CRE, $16T globally with liquidity this thin and no buffer left in RRP. There’s no real historical precedent for that combination. Past cycles either had less rollover pressure, or QE was already underway before the maturity wall arrived.
The system is entering a phase where the Fed will have to be quicker and more proactive than they were in 2019, because the cushion that softened the tightening cycle is gone. The risk isn’t that something breaks out of nowhere, it’s that the usual calendar drains now land directly on core reserves.
The Fed knows this. The market should too.
