Allowance Migration Recompute

Recompute segment and total allowance from caller-supplied exposures and loss rates.

Description

Allowance recomputation multiplies segment exposures by supplied loss rates.

Allowance recomputation multiplies segment exposures by supplied loss rates. Model inputs must be justified separately.1

Recompute segment and total allowance from caller-supplied exposures and loss rates.

When to use Allowance Migration Recompute

Use this tool to recompute segment and total allowance from caller-supplied exposures and loss rates.

Prepare the documented facts, aligned totals or expected/observed evidence labels requested. Choose applicable requirements and thresholds separately before interpreting a planning screen.

How to use Allowance Migration Recompute and understand its results

  1. Prepare the documented facts, aligned totals or expected/observed evidence labels requested. Choose applicable requirements and thresholds separately before interpreting a planning screen.
  2. Enter exposures, lossRatesPercent using the field table and calculation rules, then run the tool.
  3. Read segmentAllowances, totalAllowance. The explanation below defines the units, signs, ordering and any flags or placeholder values.
  4. If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
Input fieldMeaningValue type; see rules belowRequirement
exposuresExposure balances (currency)list of numberRequired
lossRatesPercentLoss rates (%)list of numberRequired

Enter nonempty aligned nonnegative exposures/rates; return segment totals and overall allowance.

segmentAllowance=exposure×rate%/100; total=sum(segmentAllowances)

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output fieldMeaningValue type
segmentAllowancesSegment allowances (currency)list of number
totalAllowanceTotal allowance (currency)number; minimum: 0
json
{
  "input": {
    "exposures": [
      100000,
      50000
    ],
    "lossRatesPercent": [
      1,
      4
    ]
  },
  "output": {
    "segmentAllowances": [
      1000,
      2000
    ],
    "totalAllowance": 3000
  }
}

Limitations and assumptions

Rates are not capped at 100. No migration matrix, credit-loss model, forecasting or accounting compliance is assessed.

Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Lists are limited to 100,000 entries; the rules above may require smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.

Alternative or Complementary methods

Use Software Cost Allocation: Allocate software costs between capitalized and expensed amounts. For a complementary task, use Lease Liability Recompute: Recompute a fixed-payment lease liability and compare it with the reported amount.

References

  1. Allowance Migration Recompute — tool.io

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