Also known, to ISDAphiles, as Independent Amount, this is the amount of collateral or margin a counterparty requres up front, notwithstanding any change in the mark-to-market value of the transaction.

Compare, by way of contrast, variation margin.

See also

Anatomy™: AIFMD | CASS | COBS | Conference calls | Confis | CRR | CSA | EMIR | Equity Derivatives | FOA PCA | FUND | GMRA | GMSLA | ISDA | OSLA | PB | Swapclear | UCITS