| Component | What the name means |
| FAvRate | Calculates the average tax rate given a series of marginal tax rates effective FROM, or ABOVE certain thresholds
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| TAvRate | Calculates the average tax rate given a series of marginal tax rates effective UP TO certain thresholds
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| FAvRateTD | Average Rate (Time Dependent). Calculates the average tax rate given a series of marginal tax rates effective FROM certain dates and FROM, or ABOVE certain thresholds
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| TAvRateTD | Average Rate (Time Dependent). Calculates the average tax rate given a series of marginal tax rates effective UP TO certain dates and UP TO certain thresholds.
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