A dealer's derivatives carry rating triggers requiring Rs 300 crore of extra collateral on a one-notch downgrade and a further Rs 500 crore on a second notch. It holds Rs 900 crore of unencumbered liquid assets and expects Rs 250 crore of stressed margin outflows. What is the headroom after a two-notch downgrade, and what limits would you set?

Quenlow is Rs 150 crore short: two notches call Rs 800 crore and stressed margin takes Rs 250 crore, Rs 1,050 crore against Rs 900 crore of liquid assets. Rating triggers turn a credit event into a liquidity event, arriving when funding is hardest to raise. Limit rating-trigger calls plus stressed outflows to about 80% of the buffer, which means lifting it to about Rs 1,312 crore or renegotiating the triggers.

Picture a family whose landlord, bank and school all have the right to ask for deposits the moment one of them hears the family is in trouble. The requests come together, just when the family can least borrow. Each notch of downgrade triggers a collateral call, and stressed market moves add margin on top, so the calls stack in the same month. The first notch takes Rs 300 crore, leaving Rs 600 crore. The second takes Rs 500 crore, leaving Rs 100 crore. Stressed margin of Rs 250 crore then leaves Quenlow Rs 150 crore short.

A downgrade usually happens because something has already gone wrong: losses, weaker funding, market stress. A rating trigger adds a cash demand at exactly the moment the firm's ability to raise cash is lowest, which can turn a credit problem into a liquidity crisis. Worse, the triggers are often not independent: a shortfall that becomes known can prompt a further downgrade, which triggers more calls. And the stressed margin assumption matters: a downgrade in calm markets costs Rs 800 crore; in the stressed month the liquidity bufferHigh quality assets a firm can sell or pledge immediately to meet outflows, usually cash and government bonds. is exhausted.

Tie the limit to the joint scenario, not to each piece separately. Rating-trigger calls for two notches plus stressed outflows should not exceed about 80% of unencumbered liquid assets, so Rs 1,050 crore needs a buffer of about Rs 1,312 crore. Quenlow can close the gap from both ends: raise the buffer by about Rs 412 crore through term funding, or reduce the triggers by renegotiating collateral agreements towards fixed thresholds and refusing triggers in new trades. Track a trigger-exposure metric daily and report it with the liquidity coverage ratio, and include a two-notch downgrade in the contingency funding plan with named actions: which assets are sold, which lines are drawn, who decides.

Name what else might be missing from the sketch: some counterparties may also gain the right to terminate trades on a downgrade, which crystallises replacement cost; unsecured funding lines may be cut; and clients may move balances away. The Rs 150 crore gap is therefore a minimum.