# Delta Monthly Recurring Revenue

Delta Monthly Recurring Revenue (DMRR) is the change in monthly recurring revenue (MRR) between the latest MRR and the previous MRR after a subscription amendment. Zuora only returns the value of DMRR from the Zuora REST and SOAP APIs.

## DMRR Calculation

You can calculate DMRR in the following levels:

• DMRR for all customer accounts

Add up all the account-level DMRR.

• DMRR in account level

Add up all the subscription-level DMRR for that customer.

• DMRR in subscription level

Add up all the charge-level DMRR for that subscription.

• DMRR in charge level

See below for detailed information.

### Charge-level DMRR

Charge-level DMRR is calculated based on the MRR of the charge segments. Zuora calculates MRR for every charge segments of recurring charges. To get the segment MRRs in a recurring charge:

See Segmented rate plan charges for more information.

Follow the formulas below to calculate DMRR in charge level:

DMRR = Sum ( DMRR_of_Charge_Segments )

DMRR_of_a_Charge_Segment = Latest_MRR_of_the_Segment - Previous_MRR_of_the_Segment

#### Examples of DMRR Calculation

The following examples introduce how to calculate DMRR in charge level.

Suppose your customer subscribes to your recurring charge:

• Charge Model: Flat Fee Pricing
• Price: \$100
• List Price Base: Month
• Billing Period: Month
• Charge Effective Start Date: January 1
• Charge Effective End Date: December 31

In this example, only one charge segment in the newly created subscription.

DMRR_of_charge_segment_1 = Latest_MRR_of_Segment_1 - 0 = 100

DMRR = 100

Now you create an Update Product amendment and make the following changes:

• Price: \$160
• Amendment Effective Date: June 1

There are two charge segments after subscription amendments.

DMRR_of_charge_segment_1 = Latest_MRR_of_Segment_1 - Previous_MRR_of_Segment_1 = 100 - 100 = 0

DMRR_of_charge_segment_2 = Latest_MRR_of_Segment_2 - Previous_MRR_of_Segment_1 = 160 - 100 = 60

DMRR = DMRR_of_charge_segment_1DMRR_of_charge_segment_2 = 60

Now you create a Remove Product amendment with the amendment effective date on March 1.

The Remove Product amendment does not create a new charge segment. So there are still two charge segments.

DMRR_of_charge_segment_1 = Latest_MRR_of_Segment_1 - Previous_MRR_of_Segment_1 = 100 - 100 = 0

DMRR_of_charge_segment_2 = Latest_MRR_of_Segment_2 - Previous_MRR_of_Segment_1 = 160 - 160 =0

DMRR = DMRR_of_charge_segment_1DMRR_of_charge_segment_2 = 0