Why It Matters
If you've ever looked at a financial statement from your PM company and thought, "This says I made money, but my bank account disagrees" — you've encountered accrual accounting.
Under cash-basis accounting (what most small landlords use instinctively), you record income when the check clears and expenses when you pay the bill. Under accrual accounting, you record income when it's earned and expenses when they're incurred — whether or not money has moved yet.
Why does this matter? Two big reasons. First, NOI on commercial property deals is almost always calculated on an accrual basis, so understanding the method is essential for evaluating acquisitions. Second, a property can look profitable on an accrual P&L while your bank account is empty — because "earned" and "collected" are different things. Your cash-on-cash return tells you what's hitting your bank account. Accrual tells you whether the property is truly profitable over a given period.
Most individual landlords can and should use cash-basis accounting — it's simpler and you likely qualify. The IRS only requires accrual for businesses averaging over $27 million in gross receipts. But once you scale, read PM financials, or underwrite commercial deals, you need to understand how accrual works.
At a Glance
- Core rule: Record income when earned, expenses when incurred — not when cash moves
- January rent example: Revenue in January even if collected February 3rd
- December repair example: Expense in December even if paid January 10th
- IRS requirement: Mandatory for businesses with >$27M average gross receipts; optional for most landlords
- NOI impact: Accrual-basis NOI is the standard for commercial deal analysis
- Key tradeoff: More accurate profitability picture, but doesn't tell you what's in the bank
How It Works
The timing difference. In cash-basis accounting, you record a transaction when money moves. In accrual accounting, you record it when the economic event happens. Your tenant owes $1,800 for March rent. On accrual, $1,800 is March revenue the moment March begins — it's earned. If the tenant doesn't pay until April 5th, your March books still show $1,800 in revenue and an accounts receivable balance of $1,800. When the check arrives in April, the receivable clears but no new revenue is recorded — April already got credit for April's rent.
Expenses work the same way. Your property tax bill is $6,000/year, due in two installments — March and September. On accrual, you don't record $3,000 in expense when you write the check. Instead, you record $500/month every month because the tax liability accrues evenly throughout the year. A $4,500 furnace repair completed November 20th? That's a November expense on accrual — even if you don't pay the HVAC contractor until December 15th.
Accounts receivable and payable. Accrual accounting creates two balance-sheet items that don't exist in cash-basis books. Accounts receivable tracks income earned but not yet collected (late rent, pending insurance reimbursements). Accounts payable tracks expenses incurred but not yet paid (contractor invoices, utility bills). These accounts are how accrual ties earned/owed amounts to the right period.
Why PM companies use it. Managing 200 units means dozens of tenants paying at different times, overlapping contractor invoices, and property tax installments that span months. Accrual accounting matches each dollar of income and expense to the month it belongs to — making month-over-month comparisons meaningful. Cash-basis reporting for a large portfolio would bounce wildly based on when checks happen to clear.
Real-World Example
Marcus owns a fourplex generating $7,200/month in total rent ($1,800 per unit). In December, here's what happens:
Income side: Three tenants pay December rent on time. One tenant (Unit C) doesn't pay until January 8th.
- Cash basis: December rental income = $5,400 (3 tenants x $1,800). Unit C's $1,800 shows up in January.
- Accrual basis: December rental income = $7,200 (all four units). Unit C's $1,800 is recorded as accounts receivable in December, then cleared when collected in January.
Expense side: Marcus's property manager completes a $3,200 plumbing repair on December 22nd. The invoice is paid January 5th. Monthly property tax accrual is $480 ($5,760 annual bill spread evenly).
- Cash basis: December expenses = $0 for plumbing (paid in January) and $0 for property taxes (installment was paid in September).
- Accrual basis: December expenses = $480 property taxes + $3,200 plumbing = $3,680.
The comparison is stark: Cash basis shows December revenue of $5,400, expenses of ~$1,100, and net income of ~$4,300. Accrual basis shows revenue of $7,200, expenses of $3,680, and net income of $3,520.
Cash basis says December was a great month. Accrual says it was decent but the plumbing repair cut into margins. Accrual is more accurate — it captures everything that economically happened in December, not just what cleared the bank.
But Marcus's bank account doesn't have the $7,200. He's still waiting on Unit C's $1,800. His cash-on-cash return is based on what he actually collected — not what he earned.
Pros & Cons
- More accurate profitability — Matches income and expenses to the period they belong to, giving a true picture of operating performance
- Better period comparisons — Month-over-month and year-over-year analysis is meaningful because timing of payments doesn't distort results
- Standard for commercial deals — NOI on offering memorandums and commercial appraisals uses accrual, so you'll speak the same language as brokers and lenders
- Reveals collection problems early — Growing accounts receivable is a red flag you'll see on accrual books but miss on cash basis until your bank account dips
- GAAP-compliant and required at scale — Mandatory for businesses over $27M gross receipts and for audited financial statements if you ever need institutional financing
- More complex to maintain — Requires tracking receivables, payables, and accruals that cash basis ignores entirely
- Doesn't reflect cash position — You can show a profit on paper while your bank account is empty because tenants haven't paid
- Requires software or a bookkeeper — Manual accrual accounting is error-prone; you'll need QuickBooks, AppFolio, or similar software
- Can mislead on cash flow — New investors may see accrual "income" and assume they have money to spend — they don't
- IRS Form 3115 to switch — Moving from cash to accrual (or back) requires filing a change-in-accounting-method form with the IRS
Watch Out
Don't confuse accrual income with cash in the bank. The most dangerous mistake is seeing $7,200 in accrual revenue and assuming you can spend $7,200. If $1,800 is sitting in accounts receivable because a tenant hasn't paid, that money isn't yours yet. Always run both an accrual P&L and a cash flow statement so you know what you've earned and what you've collected.
Understand which basis your PM reports use. When your property manager sends monthly statements, ask whether they're on cash or accrual basis. If they're accrual and you're doing your taxes on cash basis, you'll need to reconcile the two — or you'll misreport income on your Schedule E. Most PM software (AppFolio, Buildium, Rent Manager) can generate reports in either format.
Watch the accounts receivable aging. On accrual books, unpaid rent stays as revenue with a receivable balance. If a tenant is 90 days late, your books still show that passive income as "earned." At some point, you need to write it off as bad debt. Don't let stale receivables inflate your picture of how the property is performing.
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The Takeaway
Accrual accounting records income when it's earned and expenses when they're incurred — not when cash changes hands. It gives you a more accurate picture of whether a property is profitable in any given period, and it's the standard method for commercial deal analysis and NOI calculations. But it won't tell you if you have cash in the bank. Most small landlords are fine with cash-basis accounting, and the IRS doesn't require accrual until you're above $27 million in gross receipts. Once you start scaling, reading PM financials, or evaluating commercial deals, though, you need to understand both methods — because the numbers will look different, and the difference matters.