Accrual vs. Cash Accounting
Accrual accounting records transactions when they happen economically; cash accounting waits until money moves. Public companies must use accrual — that is why the cash flow statement exists to reconcile back to cash.
Definition
Accrual accounting records revenues when earned and expenses when incurred, regardless of when cash changes hands. Cash accounting records transactions only when cash is received or paid. GAAP and IFRS require accrual accounting for publicly traded companies because it provides a more accurate picture of economic activity and financial position.
Accrual vs Cash Accounting
Same transaction, different timing of recognition
Event — December
Sell $100K of goods on credit (Net 30 terms)
Revenue recognized at delivery — the earning event happened
DR: Accounts Receivable $100K / CR: Revenue $100K
No cash received yet — nothing to record
No journal entry
Key insight: Under accrual accounting, revenue is recognized when earned (goods delivered, services performed), regardless of when cash changes hands. This is why GAAP requires accrual accounting for public companies — it better matches economic reality.
Capitalize vs Expense
The decision that shapes your financial statements
Does the asset have a useful life > 1 year?
Capitalize
Record as asset on Balance Sheet. Depreciate $5M/year over 10 years.
Year 1 IS Impact
-$5M
Only depreciation hits earnings
Expense
Full $50M charged to Income Statement in Year 1.
Year 1 IS Impact
-$50M
Entire amount hits earnings
Year 1 Earnings Impact: $50M Spend
Impact Comparison
How the same $50M spend looks under each treatment
Year 1 Pre-Tax Income Impact
Capitalizing spreads cost; expensing takes full hit upfront
Year 1 Net Income Impact
At 25% tax rate, tax shield reduces the net hit
Total Assets (Year 1)
Capitalized asset sits on B/S (net of depreciation); expensed = nothing
Year 1 Cash Flow
Same cash outflow regardless — the distinction is purely accounting
Year 2+ Income Impact
Capitalizing means depreciation continues; expensing is done
Interview takeaway: Capitalizing inflates short-term earnings (higher Year 1 Net Income) but cash flow is identical. This is why analysts look at both the income statement and cash flow statement — companies can use capitalization policies to manage reported earnings.
How Accrual Accounting Works
Under accrual accounting, revenue is recorded when a sale is made (even if payment comes later, creating accounts receivable) and expenses are recorded when incurred (even if payment is deferred, creating accounts payable). This 'matching principle' aligns revenues with the expenses that generated them within the same period, providing a more accurate view of profitability.
Why It Matters for Financial Analysis
Accrual accounting creates timing differences between profits and cash. A company can report strong net income while burning cash (if receivables are growing and collections are slow), or generate strong cash flow while reporting losses (if it collected cash upfront for future services). This is why the cash flow statement — which reconciles net income to actual cash — is essential.
The Bridge Between Accrual and Cash
The cash flow from operations section starts with net income (accrual) and adjusts for non-cash items (D&A, SBC) and working capital changes (receivables, payables, inventory) to arrive at actual cash generated. Understanding this bridge is fundamental to financial modeling and one of the most tested concepts in interviews.
Worked Example — With Real Numbers
A consulting firm completes a $500K project in December but the client pays in February. Under accrual accounting: $500K revenue in December (with $500K accounts receivable). Under cash accounting: $500K revenue in February. The accrual method better reflects when the work was done.
Key Takeaways
Accrual accounting matches economic events to the period they occur — required by GAAP
Cash accounting only records cash inflows and outflows — used by small businesses
The difference creates working capital items like accounts receivable and accounts payable
The cash flow statement bridges accrual-based net income to actual cash generation
Common Mistakes in Interviews
Assuming high net income means high cash generation — accrual accounting creates timing differences
Not understanding why the cash flow statement starts with net income and adjusts for working capital
Confusing accrual accounting with revenue recognition — accrual is the framework; revenue recognition is one application of it
How Interviewers Test This
This is the foundation of the 'walk me through the three financial statements' question. Know that accrual accounting creates the need for the cash flow statement, and be ready to explain how changes in working capital bridge the gap between net income and cash flow.
Related Concepts
Directly referenced in this topic
Cash Flow Statement
The cash flow statement reconciles net income from the [income statement](https:...
Revenue Recognition (ASC 606)
Revenue recognition determines when a company records revenue on its income stat...
Accounts Receivable
Accounts receivable (AR) is the amount of money owed to a company by customers w...
Accounts Payable
Accounts payable (AP) is the amount a company owes to its suppliers and vendors ...
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