> ## Documentation Index
> Fetch the complete documentation index at: https://docs.activeviam.com/llms.txt
> Use this file to discover all available pages before exploring further.

# ACR

Aggregate capital requirement (ACR) for market risk is the overarching
capital measure combining the results of SA and IMA calculations.

$ACR_{total}$

is specified in [MAR 33.43](https://www.bis.org/basel_framework/chapter/MAR/33.htm?inforce=20230101\&published=20200605#paragraph_MAR_33_20230101_33_43)
as:

$min\left\{ IMA_{GA} + CapitalSurcharge + C_U;\ SA_{all\text{ }desk}\right\} + max\left\{ 0;\ IMA_{G,A} - SA_{G,A} \right\}$

Where:

* Aggregate capital requirement for approved desks and eligible
  trading desks

  $IMA_{GA} = C_A + DRC$

* Standardised approach capital requirement for trading desks that are
  either out-of-scope for model approval or that have been deemed
  ineligible to use the internal models approach

  $C_U = SBM + RRAO + DRC_{SA}$

* If at least one eligible trading desk is in the PLA test amber zone,
  a capital surcharge is added

  $Capital\ surcharge = k \cdot max\left\{ 0,\ SA_{G,A} - IMA_{G,A}\right\}$

These calculations are implemented as measures in the Solution and
can be analyzed in parallel in a consistent combined view. Full
reconciliation is possible, as every step of the calculation is
represented by a measure that can be visualised in a pivot table (or
tabular view) of the cube.

## ACR Spot (Spot version of ACR)

ACR ignoring the historical averages.

For details of the measures, see the following:

* [IMA-GA](../../cube/ima-ga)

* [CU](../../cube/cu)

* [Capital Surcharge](../../cube/capital-surcharge)