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The Plumbing

The Money You Need Only Until Teatime

A bank can end every day flat and still need billions at eleven in the morning. That gap is where settlement systems break.

11 min140 XP available4 challenges

Run the model

How much cash does settling gross actually require?

A bank sends a given value of payments across the day. Much of it is matched by payments coming the other way, which it can recycle as they arrive — but only if they arrive first. The offsetting rate is how much of its outgoing flow is covered that way. What is left has to be funded: from its own reserves, or borrowed intraday from the central bank against collateral. Settling net would need almost none of it; settling gross needs all of it, every day, before anything has gone wrong.

Liquidity it must find

€6B

gross × (1 − offset)

What netting would save
92.5%

(gross − net) ÷ gross

€40B
85%

High in normal conditions — and it is the first thing to fall in a stress

€3B

Compare a normal day with one where nothing offsets, and drive the funding need above €20bn

  • Try 0% — not yet
  • Try 100% — not yet
  • Compare a normal day with one where nothing offsets, and drive the funding need above €20bn — not yet

Answer to continue.