# Details Reuse

**Model**

**Model**

—used when usage is measured and reported during the billing cycle and then rated in arrears.**usage**—used when usage is calculated in advance based on the number of units purchased or licensed.**license**

**Charge on**

**Charge on**

Method by which this Rate Plan determines the price to bill for a Billing Cycle.

—for each respective Tier, multiplies the number of Rated Unit Events for the Billing Cycle by the Rate Price for the Tier in which they occurred; and calculates, for each respective Tier, the charge by Tier use. That is, if a Tiered Plan is defined as $2 for 0-9 units, and $1 for 10-100 units, a customer who uses 15 units will be charged $2*9 + $1*6 = $24.**Each Respective Tier**—to the highest applicable Tier, multiplies the total number of Rated Unit Events for the Billing Cycle by the price for the Tier in which the total number occurs. That is if the same plan as above was used, and 15 units again were used the**Highest Applicable Tier**would calculate the charge by multiplying 15 units by $1.00, for a total charge of $15.**Highest Applicable Tier**

**Decimal Places**

**Decimal Places**

Defines the number of decimal places to which CashBox will round reported Rated Unit Event totals. (This number affects the value displayed for the Begins at Level, as well as the manner in which CashBox will calculate Billing Cycle charges for Rate Plan priced Products.)

For example, given a total of 346.26961:

** 0:** rounds to the nearest integer. (346)

** 2:** rounds to the nearest hundredth. (346.27)

**Note: **You can use the CashBox API to set this value to a negative number. While positive numbers round to the right of the decimal point, negative numbers round to the left of the decimal point. For example, -2 rounds to the nearest hundred. (300)