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The open-source lending infra

Home Page: https://corefin.com

License: MIT License

Java 98.84% Makefile 0.23% Shell 0.41% Dockerfile 0.52%

fintech lending loan loan-calculator bnpl loan-data

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chahakgoswami shadracnicholas sigkill79 fernandofinyellow ssharshan arshaunk usama4745 s-bose7 embracingthehustleusa piyushchhabra josescasanova

corefin's Issues

Installment IDs are incorrectly returned in create loan response

[Roadmap] Early full installment payments

Installment dates are incorrect after on-time full payment is applied

Reproduction steps

Create a loan with 4 terms

curl --location 'http://localhost:8080/loans' \
--header 'Content-Type: application/json' \
--data '{
    "term": 4,
    "originatedAmount": 100.00,
    "currency": "USD",
    "targetInterestRate": 0.10,
    "effectiveInterestRate": 0.10,
    "externalReference": "orderId_12345",
    "startDate": "2024-01-01",
    "endDate": "2024-01-01",
    "timezone": "America/Los_Angeles",
    "region": "US",
    "state": "CA"
}'

It should create a loan with the following installments:

"loanInstallments": [
            {
                "installmentId": "0",
                "loanId": "97bcdb7f-5e09-43cb-a939-94cf881b13d9",
                "numTerm": 1,
                "principalAmount": 24.67,
                "interestAmount": 0.85,
                "startDate": "2024-01-01",
                "dueDate": "2024-02-01",
                "endDate": "2024-01-31",
                "status": "OWED"
            },
            {
                "installmentId": "1",
                "loanId": "97bcdb7f-5e09-43cb-a939-94cf881b13d9",
                "numTerm": 2,
                "principalAmount": 24.92,
                "interestAmount": 0.60,
                "startDate": "2024-02-01",
                "dueDate": "2024-03-01",
                "endDate": "2024-02-29",
                "status": "OWED"
            },
            {
                "installmentId": "2",
                "loanId": "97bcdb7f-5e09-43cb-a939-94cf881b13d9",
                "numTerm": 3,
                "principalAmount": 25.09,
                "interestAmount": 0.43,
                "startDate": "2024-03-01",
                "dueDate": "2024-04-01",
                "endDate": "2024-03-31",
                "status": "OWED"
            },
            {
                "installmentId": "3",
                "loanId": "97bcdb7f-5e09-43cb-a939-94cf881b13d9",
                "numTerm": 4,
                "principalAmount": 25.32,
                "interestAmount": 0.21,
                "startDate": "2024-04-01",
                "dueDate": "2024-05-01",
                "endDate": "2024-04-30",
                "status": "OWED"
            }
        ]

Make payment

curl --location 'http://localhost:8080/payments/97bcdb7f-5e09-43cb-a939-94cf881b13d9/makePayment' \
--header 'Content-Type: application/json' \
--data '{
    "amount": "25.52",
    "paymentType": "PAYMENT",
    "paymentDateTime" : "2024-02-01T12:00:00Z"
}'

"loanInstallments": [
            {
                "installmentId": "1f68fb80-f0a6-11ee-81ba-0242ac140002",
                "loanId": "97bcdb7f-5e09-43cb-a939-94cf881b13d9",
                "numTerm": 1,
                "principalAmount": 24.67,
                "interestAmount": 0.85,
                "startDate": "2024-01-01",
                "dueDate": "2024-02-01",
                "endDate": "2024-04-01",
                "status": "PAID"
            },
            {
                "installmentId": "1f6af8a2-f0a6-11ee-81ba-0242ac140002",
                "loanId": "97bcdb7f-5e09-43cb-a939-94cf881b13d9",
                "numTerm": 2,
                "principalAmount": 25.12,
                "interestAmount": 0.40,
                "startDate": "2024-02-01",
                "dueDate": "2024-03-01",
                "endDate": "2024-04-01",
                "status": "OWED"
            },
            {
                "installmentId": "1f6c16c5-f0a6-11ee-81ba-0242ac140002",
                "loanId": "97bcdb7f-5e09-43cb-a939-94cf881b13d9",
                "numTerm": 3,
                "principalAmount": 25.31,
                "interestAmount": 0.21,
                "startDate": "2024-03-01",
                "dueDate": "2024-04-01",
                "endDate": "2024-04-01",
                "status": "OWED"
            },
            {
                "installmentId": "1f6d0dda-f0a6-11ee-81ba-0242ac140002",
                "loanId": "97bcdb7f-5e09-43cb-a939-94cf881b13d9",
                "numTerm": 4,
                "principalAmount": 25.54,
                "interestAmount": -0.01,
                "startDate": "2024-04-01",
                "dueDate": "2024-05-01",
                "endDate": "2024-04-01",
                "status": "OWED"
            }
        ]

The startDate and dueDate for each installment are correct but the endDate is incorrect.

[Roadmap] Late full installment payments

[Roadmap] On-time full installment payments

[Roadmap] Reporting API

I want to be able to query for the following reports:

An overview of my loans - an aggregation of account balances and payments
Export consumer loan tape

[Roadmap] Configurable installment periods on creation

I want to be able to configure a loan's terms, including the repayment period.

[Roadmap] Python SDK

[Roadmap] Custom amount installment payments

[Roadmap] API key authentication

[Roadmap] Payments API

I want to be able to retrieve all payments that are due on a particular date.

Also, I'd like the option to get all payments that are delinquent or past due.

[Roadmap] Merchant Cash Advance

[Roadmap] Installment generation with interest for term loans

[Roadmap] Adjustable payment schedule

Enable cross-domain requests

Amortization schedule for Actual/365 calculator is incorrect

For the following loan configuration:

{
  term: 6,
  start_date: 01/01/2024,
  interest_rate: 10%,
  principal: $1000,
  first_payment_date: 02/01/2024
}

The amortization schedule should be:

[
  {
    principal: 163.06,
    interest: 8.49
  },
  {
    principal: 164.90,
    interest: 6.65
  },
  {
    principal: 165.84,
    interest: 5.71
  },
  {
    principal: 167.39,
    interest: 4.16
  },
  {
    principal: 168.67,
    interest: 2.88
  },
  {
    principal: 170.14,
    interest: 1.41
  }
]

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