Automated Interest Accrual & Compounding Engine

1. Overview & Business Value#

This comprehensive operational guide details the architecture, business workflows, configuration parameters, and execution steps for Automated Interest Accrual & Compounding Engine within SmartERP.

Understand the mathematical engine executing daily interest accruals, monthly compound postings, and general ledger journal integration.

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2. Prerequisites & Security Access Groups#

• Required Modules: smarterp_sacco_core, smarterp_equb, smarterp_loan_management
• Security Groups:
  • SACCO Loan Officer (Technical ID: smarterp_sacco.group_sacco_officer)
  • SACCO Credit Committee Member (Technical ID: smarterp_sacco.group_sacco_committee)
  • SACCO General Manager (Technical ID: smarterp_sacco.group_sacco_manager)
• Master Data Dependencies: Member KYC profiles, share capital registers, savings product tiers, loan products with reducing-balance schedules, and Equb rotational pool configurations.

3. Step-by-Step Configuration & Execution#

Step 1: Navigating to the Module Interface#

1. Log into your SmartERP instance at https://smarterp.et/odoo.
2. Open the main App Switcher (grid icon in the top-left corner).
3. Select the SACCO & Equb app icon.
4. From the top navigation bar, open SACCO & Equb → Members → KYC Registry / Savings Accounts / Loan Applications / Equb Pools.

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Step 2: Creating and Parameterizing Records#

1. Click the New button in the top-left control panel.
2. Complete the mandatory fields in the record form:
   • Member Identification Number (Mandatory): Unique membership number complying with Ethiopian Cooperative Commission rules
   • Full Name & Kebele ID (Mandatory): Verified member identity with physical residence verification
   • Share Capital Subscriptions (Mandatory): Subscribed shares not exceeding statutory 10% member ceiling (Proclamation 985/2016)
   • Primary Savings Product (Mandatory): Compulsory regular monthly savings account configuration
3. Configure optional operational parameters and localized tags as required:
   • Guarantor & Collateral (Optional): Approved co-signers with locked savings accounts or registered vehicle/property lien
   • Equb Rotational Group (Optional): Linked digital Equb pool with lottery draw eligibility
   • Beneficiary Nominee (Optional): Designated next of kin for death or disability benefit transfer
4. Click the Save icon in the control bar to commit the record.

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Step 3: Validating and Processing Transactions#

• State Transitions: Execute operational state progression (Application → KYC Verified → Approved → Active / Disbursed → Delinquency Monitored → Settled).
• Ledger & System Impact: Loan disbursement debits loans receivable and credits cash/bank; loan repayments credit interest income and loan principal, updating 5-tier NBE provisioning registers.
• Audit Verification: Automated recording of author ID, timestamp, and immutable revision history.

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Daily Accrual Mathematical Formulation#

To prevent distortion in financial statements and ensure fairness to members depositing mid-month, SmartERP computes interest on the Daily Ending Ledger Balance:

$$\text{Daily Interest} = \text{Closing Balance}_t \times \left( \frac{r}{365} \right)$$

Where $r$ represents the contractual nominal annual interest rate.

At midnight every day, an automated cron job iterates across all active savings accounts, calculating daily interest and recording accruals into the non-posted interest liability buffer:

$$\text{Monthly Interest Posting} = \sum_{t=1}^{M} \text{Daily Interest}_t$$

Monthly Capitalization & General Ledger Posting#

On the final calendar day of each month:

1. The interest engine executes the Monthly Interest Capitalization Run.
2. For each member account, cumulative monthly interest credits directly to the principal balance: $$\text{New Principal} = \text{Previous Principal} + \text{Monthly Interest}$$
3. The general ledger posts consolidated accounting entries:
   • Debit: Member Savings Interest Expense (510100)
   • Credit: Member Savings Deposit Liability (201100)
4. An automated SMS notification delivers the interest credit notice to the member's mobile phone.

Interest Suspension on Dormant Accounts#

If an account records zero member-initiated deposits or withdrawals for consecutive 365 days:

• The system automatically transitions account state to Dormant.
• Automated interest compounding suspends until the member presents physical KYC credentials at the branch to execute formal account reactivation.

4. Advanced Configuration Points#

• Automated Actions & Scheduled Tasks (Crons):
  • SACCO: Accrue monthly member savings interest (smarterp_sacco.ir_cron_savings_interest): Runs on the final day of each calendar month to credit interest
  • Loan: Evaluate 5-tier NBE delinquency classification (smarterp_sacco.ir_cron_loan_delinquency): Runs nightly to compute loan loss provisions per NBE directives
  • Equb: Execute scheduled lottery draw (smarterp_sacco.ir_cron_equb_draw): Runs on defined pool cycle dates using provably fair random selection
• Custom Print Templates & Reports:
  • Member Savings Passbook & Transaction Ledger
  • Loan Amortization Schedule (Reducing Balance)
  • NBE 5-Tier Delinquency & Loan Loss Provisioning Statement
  • Annual Patronage Dividend Distribution Schedule
• Multi-Company Rules: Record-level security isolation under Company 1 (Ashewa Technology Solutions S.C.), preventing cross-company ledger leakage across parent and subsidiary legal entities.

5. Comprehensive Troubleshooting Matrix#