Feedback Loop (ratchet)
Also called
The allowance above the Green Threshold is a running balance, not a permanent buffer. Breach 85% at the Accounts Confirmation Test and next season's allowance is reduced by the size of the breach — the negative loop.
Return to compliance and the allowance rebuilds at 10 percentage points a season, up to the 30% cap it started at — the positive loop.
So the Red Threshold moves with the club's own history. A club that overspends by 20 percentage points drops to a 10% allowance and a 95% ceiling the following season, while a compliant club keeps the full 115%.
Unused headroom never carries forward. Spending well under the line one year does not buy extra allowance the next; the only way the allowance grows is by rebuilding after it has been cut.