What Is Accrual Accounting? A Plain-English Explanation

Most businesses are required to use accrual accounting once they reach a certain size, but even finance professionals who work with it every day sometimes struggle to articulate what it actually means. This guide explains the concept from first principles — and why it leads to things like prepayments and accruals.

The Cash Basis vs Accrual Basis

Under cash basis accounting, you record revenue when you receive cash and expenses when you pay them. Simple — but it produces financial statements that can be misleading.

Under accrual accounting, you record revenue when it is earned and expenses when they are incurred — regardless of when the cash moves. This gives a much more accurate picture of what happened economically in a given period.

The Matching Principle

The matching principle is the core idea behind accrual accounting. It states that expenses should be recognised in the same period as the revenue they helped to generate. If you incur a cost in March to produce revenue recognised in March, both should appear in the March accounts.

This is what makes prepayments and accruals necessary. If you pay an annual insurance premium in January, only one twelfth of that cost relates to January. The matching principle requires you to spread it across the twelve months of benefit — hence the need for a prepayment schedule.

What This Means at Month-End

• Any payment made in advance must be held as an asset until the benefit is received
• Any cost incurred but not yet invoiced must be accrued as a liability
• Revenue received in advance must be deferred until it is earned
• Depreciation must be recognised each period to match the cost of assets to their useful life

Why Accrual Accounting Matters

Accrual-based financial statements are more useful for decision-making because they show the economic reality of a period — not just the cash movements. They are required for statutory reporting in most jurisdictions and by any business that seeks external financing.

The downside is that accrual accounting requires more judgment and more work at month-end. Estimating accruals, managing prepayment schedules, and reconciling the balance sheet are all consequences of applying the accrual principle correctly. The goal of tools like CloseKit is to make that work as systematic and as low-effort as possible.

Common Accrual Accounting Mistakes

• Expensing annual payments immediately rather than spreading them
• Forgetting to accrue costs that arrive late in the month
• Not reversing accruals when the invoice arrives
• Using cash receipts as a proxy for revenue recognition
• Failing to reconcile accrual balances on the balance sheet to supporting schedules