Source Documents, Books of Original Entry, and Ledger Posting
This core practical module equips Form I students with the hands-on skills required to initiate the accounting cycle. Students learn to identify, inspect, and verify primary source documents (sales invoices, purchases invoices, credit notes, debit notes, payment vouchers, and official receipts). Learners master recording transactions in Books of Original Entry (Day Books: Sales Journal, Purchases Journal, Returns Inwards Journal, Returns Outwards Journal, and General Journal). Finally, students execute ledger posting to personal, real, and nominal accounts in the General Ledger and balance off accounts.
🎯 Syllabus Competencies & Learning Objectives
Key Competencies
- Main Competence: 1.0 Demonstrate mastery of the principles of Book-keeping
- Specific Competence: 1.2 Record business transactions using source documents
Specific Learning Objectives
- Identify, explain, and extract data from commercial source documents used in business transactions.
- Record credit sales, credit purchases, and returns in their respective Books of Original Entry (Day Books).
- Explain the purpose and function of the General Journal (Journal Proper) and record opening, correction, and compound entries.
- Post entries systematically from Books of Original Entry to the General Ledger, Sales Ledger, and Purchases Ledger.
- Demonstrate the procedure of balancing off ledger accounts at the end of an accounting period.
📖 Comprehensive Study Notes Summary
**Allocated Periods: 27**
#### 1. Commercial Source Documents
Source documents provide the written, verifiable evidence that a financial transaction took place:
1. **Invoice**: Issued by the seller to a credit buyer stating goods description, quantity, price, discount, and credit terms (*Sales Invoice* for seller, *Purchases Invoice* for buyer).
2. **Electronic Fiscal Receipt (EFD Receipt)**: Compulsory electronic receipt issued in Tanzania under TRA regulations for cash and electronic sales.
3. **Credit Note**: Issued by the seller to a buyer when goods are returned damaged/incorrect or when the buyer has been overcharged; reduces the amount the customer owes.
4. **Debit Note**: Sent by a buyer to a supplier to request a credit note for damaged goods, or issued by a seller to correct an undercharge.
5. **Payment Voucher**: An internal document authorizing and verifying cash or bank disbursement.
6. **Cheque Counterfoil / Bank Pay-in Slip**: Record of payments made by cheque or funds deposited into the commercial bank.
#### 2. Books of Original Entry (Books of Prime Entry / Day Books)
Transactions are first entered chronologically into books of original entry before being posted to the ledgers:
1. **Sales Day Book (Sales Journal)**: Records all goods sold strictly on credit. Source document: Outgoing Sales Invoice.
2. **Purchases Day Book (Purchases Journal)**: Records all goods purchased strictly on credit. Source document: Incoming Purchases Invoice.
3. **Returns Inwards Day Book (Sales Returns Journal)**: Records goods returned by credit customers. Source document: Copy of Credit Note issued.
4. **Returns Outwards Day Book (Purchases Returns Journal)**: Records goods returned to credit suppliers. Source document: Credit Note received from supplier.
5. **General Journal (Journal Proper)**: A diary for transactions not recorded in other specialized journals:
- Opening entries (assets and liabilities when starting business).
- Purchase or sale of non-current assets on credit.
- Correction of accounting errors.
- Year-end adjusting entries (depreciation, accruals, prepayments).
#### 3. The Ledger and Classification of Accounts
The Ledger is the principal book of accounts containing all personal, real, and nominal accounts:
- **Divisions of the Ledger**:
* *Sales Ledger (Debtors Ledger)*: Contains individual personal accounts of credit customers.
* *Purchases Ledger (Creditors Ledger)*: Contains individual personal accounts of credit suppliers.
* *General Ledger (Nominal Ledger)*: Contains all real accounts (assets), nominal accounts (expenses, revenues), and capital accounts.
- **Classification of Ledger Accounts**:
* *Personal Accounts*: Accounts of persons, firms, or companies (Debtors, Creditors, Bank).
* *Real Accounts*: Accounts of tangible property and assets (Land, Machinery, Buildings, Cash, Stock).
* *Nominal Accounts*: Accounts of expenses, losses, revenues, and gains (Rent, Salaries, Commission, Sales, Purchases).
#### 4. The Process of Balancing Off an Account
At the end of an accounting period (month/year), ledger accounts are balanced:
1. Sum both the debit side and credit side on rough paper.
2. Enter the larger total in the total box on both sides.
3. Find the difference between the two totals.
4. Enter the difference on the smaller side as **Balance carried down (c/d)**.
5. Bring down the balance to the opposite side below the total line on the first day of the new period as **Balance brought down (b/d)**.
💡 Key Concepts & FAQs (Exam Questions)
Q: What source document is used to record entries in the Purchases Day Book?
Answer: The incoming Purchases Invoice from the credit supplier.
Q: What is the purpose of a Credit Note?
Answer: A document sent by a seller to a buyer acknowledging that the buyer's debt has been reduced due to returned goods, overcharge, or allowance.
Q: What transactions are recorded in the General Journal (Journal Proper)?
Answer: Non-routine transactions such as purchase/sale of fixed assets on credit, opening entries, correction of errors, and year-end adjustments.
Q: What does a debit 'Balance b/d' in a customer's account signify?
Answer: It signifies that the customer is a debtor who owes the business money.