Accounting Process: From Source Documents to Statements

Last reviewed: July 2026.

The accounting process converts transactions and events into reliable financial statements. In a modern system, many entries are generated automatically, but controls, reconciliations, judgements and reviews remain essential.

A strong process creates a complete audit trail from source document to ledger, trial balance, adjustments, statements and disclosures.

Accounting cycle overview

Stage	Main activity	Key output
1. Identify	Determine accountable transactions and events	Approved source evidence.
2. Record	Enter transactions through integrated modules or journals	Subledger and general-ledger entries.
3. Classify	Post to appropriate accounts and dimensions	Updated ledger balances.
4. Reconcile	Compare independent records and subledgers	Resolved differences.
5. Adjust	Record accruals, estimates and year-end entries	Adjusted trial balance.
6. Report	Prepare statements, notes and management reports	Reviewed financial information.
7. Close	Lock periods and carry forward balances	Controlled opening balances.

Identify transactions and events

Not every business activity creates an immediate journal. Purchase orders, budgets and negotiations may be commitments rather than recognised transactions.

Recognition occurs when applicable definitions and requirements are met.

Source documents

Invoices, receipts, contracts, bank records, goods-received notes, payroll records and approved journals support accounting entries.

The source documents guide explains books of prime entry and evidence.

Integrated modules

Sales, purchases, inventory, payroll, fixed assets and cash modules can post automatically to subledgers and the general ledger.

Integration reduces duplicate entry but increases dependence on configuration, access controls, interfaces and master data.

Chart of accounts and dimensions

The chart of accounts classifies transactions into assets, liabilities, equity, income and expenses. Dimensions such as department, project, location and product support analysis without excessive account creation.

Use consistent definitions and controlled account creation.

Subledgers and control accounts

Customer, supplier, inventory and fixed-asset subledgers provide detail. Their totals should reconcile with corresponding control accounts.

Review the ledger accounts guide and the purchase ledger guide.

Daily and weekly controls

• review failed interfaces and rejected transactions;
• approve exception reports;
• reconcile bank and payment files;
• monitor unusual manual journals;
• review unmatched receipts, orders and invoices;
• back up systems and protect access.

Month-end close

A structured close calendar assigns responsibilities and deadlines. Reconcile cash, receivables, payables, inventory, payroll, tax, fixed assets, debt and intercompany balances.

Investigate differences rather than carrying them forward indefinitely.

Adjusting entries

Year-end and month-end adjustments may include accruals, prepayments, depreciation, provisions, expected credit losses, inventory write-downs, tax and foreign-exchange remeasurement.

Each adjustment needs evidence, calculation, approval and clear narration.

Adjusted trial balance

The adjusted trial balance confirms total debits equal total credits after adjustments. It supports statement preparation but does not prove all transactions are correct.

The trial balance worked example shows the reporting flow.

Financial statement mapping

Map ledger accounts to financial-statement lines and notes. Review signs, classifications, offsetting, current/non-current status and cash-flow categories.

Mapping should be controlled and tested after chart-of-account changes.

Review and analytical procedures

• compare actual results with prior periods and budgets;
• analyse margins and ratios;
• review large, unusual and late journals;
• investigate negative or unexpected balances;
• confirm statement-to-ledger reconciliations;
• review disclosures against checklists and contracts.

Closing entries and period locks

Temporary income and expense accounts ultimately affect retained earnings. Computerised systems may automate closing, but opening balances and retained earnings must be verified.

Lock completed periods and control any authorised reopening.

Internal controls

Segregate initiation, approval, recording, custody and reconciliation where practical. Use role-based access, approval limits, audit trails, change management and monitoring.

The accounting software controls guide covers system risks.

Estimates and judgements

Not all numbers come directly from invoices. Useful lives, impairment, provisions, fair values and expected credit losses require assumptions and evidence.

Use the IAS 8 accounting policies and estimates guide.

Continuous accounting

Modern teams increasingly reconcile and review throughout the period rather than waiting for month end. Continuous close can shorten reporting time and improve error detection when responsibilities and controls remain clear.

Year-end cut-off

Test whether revenue, purchases, inventory movements, payroll and expenses are recorded in the correct period. Use invoice dates together with delivery, receipt, service and contractual evidence.

Cut-off errors can misstate both performance and financial position even when the total transaction is eventually recorded.

Account reconciliation standards

Each material balance-sheet account should have an owner, preparer, reviewer, supporting schedule and ageing of reconciling items. Old unexplained items require escalation and resolution.

Certification should confirm that the balance is supported, appropriately classified and consistent with the general ledger.

Financial-reporting calendar

A reporting calendar coordinates entity submissions, reconciliations, estimates, tax calculations, disclosure drafting, management review, audit requests and approval.

Critical dependencies and late data should be visible so quality is not sacrificed for speed.

Data quality and master data

Reliable accounting depends on customer, supplier, product, tax, currency and chart-of-account master data. Changes need approval, testing and audit trails.

Duplicate or poorly designed master data can produce errors throughout integrated modules.

Documentation and retention

Retain evidence for entries, estimates, reconciliations and approvals according to legal and organisational requirements. Documentation should enable an informed reviewer to understand what was recorded, why and by whom.

Common mistakes

• assuming automated postings need no review;
• failing to reconcile subledgers;
• using unsupported manual journals;
• changing mapping without testing;
• leaving old reconciling items unresolved;
• closing before estimates and disclosures are complete;
• allowing unrestricted period reopening.

Key takeaway

The accounting process is a controlled information system, not just data entry. Complete evidence, reconciliations, adjustments and review produce trustworthy financial statements.

Official learning references: ACCA process for preparing financial statements, ACCA sales and purchases in a computerised system, and Conceptual Framework.

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