Billing Service

Overview

The main objective of the billing module is to generate the bill for all revenue-based business services. To serve the bill, the Billing-Service requires demand. Demands will be prepared by the revenue modules and stored by billing based on which it generates the Bill.

Pre-requisites

  • Prior Knowledge of Java/J2EE.

  • Prior Knowledge of Spring Boot.

  • Prior Knowledge of KAFKA

  • Prior Knowledge of REST APIs and related concepts like path parameters, headers, JSON, etc.

  • Prior knowledge of demand-based systems.

  • The following services should be up and running:

    • user

    • MDMS

    • Id-Gen

    • URL-Shortening

    • notification-sms

Key Functionalities

  • eGov billing service creates and maintains demands.

  • Generates bills based on demands.

  • Updates the demands from payment when the collection service takes a payment.

Deployment Details

  • Deploy the latest image of the billing service available.

Configuration Details

In the MDMS data configuration, the following master data is needed for the functionality of the billing.

MDMS

Business Service JSON

{
  "tenantId": "pb",
  "moduleName": "BillingService",
  "BusinessService": [
    {
      "businessService": "PropertyTax",
      "code": "PT",
      "isBillAmendmentEnabled":"true",
      "collectionModesNotAllowed": [
        "DD","OFFLINE_NEFT","OFFLINE_RTGS","POSTAL_ORDER"
      ],
      "partPaymentAllowed": true,
      "minAmountPayable":100,
      "isAdvanceAllowed": false,
      "demandUpdateTime": 86400000,
      "isVoucherCreationEnabled": true,
      "billGineiURL" : "egov-searcher/bill-genie/billswithaddranduser/_get"
    },
    {
      "businessService": "WaterCharges",
      "code": "WC",
      "isBillAmendmentEnabled":"true",
      "collectionModesNotAllowed": [
        "DD","OFFLINE_NEFT","OFFLINE_RTGS","POSTAL_ORDER"
      ],
      "partPaymentAllowed": false,
      "isAdvanceAllowed": true,
      "demandUpdateTime": 86400000,
      "isVoucherCreationEnabled": false
    },
    {
      "businessService": "TradeLicense",
      "code": "TL",
      "collectionModesNotAllowed": [
        "DD","OFFLINE_NEFT","OFFLINE_RTGS","POSTAL_ORDER"
      ],
      "partPaymentAllowed": false,
      "isAdvanceAllowed": false,
      "demandUpdateTime": 604800000,
      "isVoucherCreationEnabled": true
    }
  ]
}

TAX-Head JSON

{
  "tenantId": "pb",
  "moduleName": "BillingService",
  "TaxHeadMaster": [
    {
      "category": "ADVANCE_COLLECTION",
      "service": "PT",
      "name": "Pt advance carry forward",
      "code": "PT_ADVANCE_CARRYFORWARD",
      "isDebit": true,
      "isActualDemand": false,
      "order": "0",
      "isRequired": false
    },
    {
      "category": "TAX",
      "service": "PT",
      "name": "Pt owner exemption",
      "code": "PT_OWNER_EXEMPTION",
      "isDebit": true,
      "isActualDemand": true,
      "order": "5",
      "isRequired": false
    },
    {
      "category": "TAX",
      "service": "PT",
      "name": "Pt time rebate",
      "code": "PT_TIME_REBATE",
      "isDebit": true,
      "isActualDemand": true,
      "order": "2",
      "isRequired": false
    },
    {
      "category": "TAX",
      "service": "PT",
      "name": "Pt unit usage excemption",
      "code": "PT_UNIT_USAGE_EXEMPTION",
      "isDebit": true,
      "isActualDemand": true,
      "order": "6",
      "isRequired": false
    },
    {
      "category": "TAX",
      "service": "PT",
      "name": "Pt adhoc penalty",
      "code": "PT_ADHOC_PENALTY",
      "isDebit": false,
      "isActualDemand": false,
      "order": "1",
      "isRequired": false
    },
    {
      "category": "TAX",
      "service": "PT",
      "name": "propertytax",
      "code": "PT_TAX",
      "isDebit": false,
      "isActualDemand": true,
      "order": "0",
      "isRequired": false
    },
    {
      "category": "TAX",
      "service": "PT",
      "name": "Pt fire cess",
      "code": "PT_FIRE_CESS",
      "isDebit": false,
      "isActualDemand": true,
      "order": "7",
      "isRequired": false
    }
  ]
}

Tax-Period JSON

{
  "tenantId": "pb",
  "moduleName": "BillingService",
  "TaxPeriod": [
    {
      "fromDate": 1554076799000,
      "toDate": 1585679399000,
      "periodCycle": "ANNUAL",
      "service": "PT",
      "code": "PTAN2019",
      "financialYear": "2019-20"
    },
    {
      "fromDate": 1522540800000,
      "toDate": 1554076799000,
      "periodCycle": "ANNUAL",
      "service": "PT",
      "code": "PTAN2018",
      "financialYear": "2018-19"
    },
    {
      "fromDate": 1491004800000,
      "toDate": 1522540798000,
      "periodCycle": "ANNUAL",
      "service": "PT",
      "code": "PTAN2017",
      "financialYear": "2017-18"
    },
    {
      "fromDate": 1459468800000,
      "toDate": 1491004799000,
      "periodCycle": "ANNUAL",
      "service": "PT",
      "code": "PTAN2016",
      "financialYear": "2016-17"
    },
    {
      "fromDate": 1522540800000,
      "toDate": 1554076799000,
      "periodCycle": "ANNUAL",
      "service": "TL",
      "code": "TLAN2018",
      "financialYear": "2018-19"
    }
  ]
}
Variable
Path
Description

bs.businesscode.demand.updateurl

{

"PT":"http://pt-calculator-v2:8080/pt-calculator-v2/propertytax/_updatedemand",

"TL":""

}

Each module’s application calculator should provide its own update URL. if not present then a new bill will be generated without making any changes to the demand.

bs.bill.billnumber.format

BILLNO-{module}-[SEQ_egbs_billnumber{tenantid}]

IdGen format for the bill number

bs.amendment.idbs.bill.billnumber.format

BILLNO-{module}-[SEQ_egbs_billnumber{tenantid}]

is.amendment.workflow.enabled

true/false

enable disable workflow of bill amendment

Integration Details

Integration Scope

Billing service can be integrated with any organization or system that wants a demand-based payment system.

Integration Benefits

  • Easy to create and simple process of generating bills from demands

  • The amalgamation of bills period-wise for a single entity like PT or Water connection.

  • Amendment of bills in case of legal requirements.

Steps to Integration

  1. Customers can create a demand using the /demand/_create

  2. Organizations or Systems can search the demand using /demand/_searchendpoint

  3. Once the demand is raised the system can call /demand/_update endpoint to update the demand as per need.

  4. Bills can be generated using, which is a self-managing API that generates a new bill only when the old one expires /bill/_fetchbill.

  5. Bills can be searched using /bill/_search.

  6. Amendment facility can be used in case of a legal issue to add values to existing demands using /amendment/_create and /amendment/_update can be used to cancel the created ones or update workflow if configured.

Interaction Diagram

Interaction Diagram V1.1:

Reference Docs

Doc Links

Description
Link

Id-Gen service

****

url-shortening

MDMS

API List

Description
Link

/demand/_create, _update, _search

https://www.getpostman.com/collections/900d99a85d083fb2d377

/bill/_fetchbill, _search

https://www.getpostman.com/collections/900d99a85d083fb2d377

/amendment/_create, _update

https://www.getpostman.com/collections/b195d3b1d354c767b6bd

Apportioning FAQs

What is apportioning?

Adjusting the receivable amount with the individual tax head.

Types of apportioning V1.1

Default order-based apportioning(Based on apportioning order adjust the received amount with each tax head).V1.1

Types of apportioning V1.2: (TBD)

  • Proportionate-based apportioning (Adjust total receivable with all the tax heads equally)

  • Order & percentage-based apportioning (Adjust total receivable based on order and the percentage which is defined for each tax head).

Principle of apportioning

The basic principle of apportioning holds that if the full amount is paid for any bill then each individual tax head should get nullified with their corresponding adjusted amount.

Example: Case 1: When there are no arrears all tax heads belong to their current purpose.

Example: given below

Tax Head
Amount
Order
Full Payment (2000)
Partial Payment (1500)
Partial Payment (750)
Partial Payment With Rebate (500)

Pt_tax

1000

6

1000

1000

750

750

AdjustedAmt

1000

-250

-750

-750

RemainingAMTfromPayableAMT

0

0

0

0

Penality

500

5

500

500

AdjustedAmt

500

-500

RemainingAMTfromPayableAMT

1000

250

Interest

500

4

500

500

AdjustedAmt

500

-500

RemainingAMTfromPayableAMT

1500

750

Cess

500

3

500

500

AdjustedAmt

500

-500

RemainingAMTfromPayableAMT

2000

1250

Exm

-250

1

-250

-250

AdjustedAmt

-250

250

RemainingAMTfromPayableAMT

2250

1750

Rebate

-250

2

-250

-250

AdjustedAmt

-250

250

RemainingAMTfromPayableAMT

2500

750

Case 2: Apportioning with two years of arrear: Example: The apportioning details for the financial year 2014-15 are given below.

Tax Head
Amount
Tax Period From
Tax Period To
Order
Purpose

Pt_tax

1000

2014

2015

6

Current

AdjustedAmt

0

Penality

500

2014

2015

5

Current

AdjustedAmt

0

Interest

500

2014

2015

4

Current

AdjustedAmt

0

Cess

500

2014

2015

3

Current

AdjustedAmt

0

Exm

-250

2014

2015

1

Current

AdjustedAmt

0

The table below illustrates the demand structure generated in case there are no payments for the specified financial year (2015-16).

Tax Head
Amount
Tax Period From
Tax Period To
Order
Purpose

Pt_tax

1000

2014

2015

6

Arrear

AdjustedAmt

0

Pt_tax

1500

2015

2016

6

Current

AdjustedAmt

0

Penalty

600

2014

2015

5

Arrear

AdjustedAmt

0

Penalty

500

2015

2016

5

Current

AdjustedAmt

0

Interest

500

2014

4

Arrear

AdjustedAmt

0

Cess

500

2014

3

Arrear

AdjustedAmt

0

Exm

-250

2014

1

Arrear

AdjustedAmt

0

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