Why It Matters
Your property can show 100% occupancy and still hemorrhage cash if three tenants are 45 days behind on rent. Occupancy measures whether units are filled. AR measures whether those filled units are producing income.
Track AR by aging — how many days each balance has been outstanding. Current (0-30 days) is normal. Past 30 days is a yellow flag. Past 60 days, that balance has a 50-70% chance of becoming bad debt. Past 90 days, you're writing it off. Low AR means tenants pay on time. High AR means you've got a collection problem, a screening problem, or both.
At a Glance
- What it is: Money tenants owe you that hasn't been collected yet (rent, fees, reimbursements)
- Balance sheet classification: Current asset (expected collected within 12 months)
- Key distinction: AR is an asset on paper but not cash in your bank account
- Aging buckets: 0-30 days (current), 31-60 days (warning), 61-90 days (likely bad debt), 90+ days (write-off territory)
- Health benchmark: AR past 30 days should stay below 5% of your gross scheduled rent
- When AR becomes bad debt: Tenant vacates with unpaid balance, amount is uncollectable, written off as an expense
How It Works
AR gets created when rent is due but unpaid. Tenant owes $1,500 on the 1st and doesn't pay? You've got a $1,500 receivable — an asset on your balance sheet, but one you can't spend.
AR aging tracks how old each balance is. You want to know that $1,500 is 15 days old (probably fine), $1,200 is 40 days old (concerning), and $1,500 is 72 days old (likely uncollectable). The older the balance, the less likely you'll collect.
Accrual vs. cash accounting. Cash-basis landlords record income when cash arrives — unpaid rent doesn't show up. Under accrual accounting (standard for larger portfolios), income is recorded when rent is due. That means AR inflates your NOI on paper even when cash isn't in the bank.
Rent receivable vs. bad debt. Tenant behind but still in the unit? That's rent receivable — collectable. Tenant vacates owing $3,000? That's bad debt — an expense that reduces your NOI.
Real-World Example
Marcus owns a 12-unit building. Gross scheduled rent: $18,000/month ($1,500/unit). On March 15th, he pulls his AR aging report and finds three problem tenants:
- Tenant A owes $1,500 (18 days late) — first time late, likely collectable with a reminder
- Tenant B owes $2,800 (47 days late) — owes February plus partial March, trending toward bad debt
- Tenant C owes $4,500 (73 days late) — owes January, February, and March, eviction proceedings should start
The other 9 tenants paid in full. Total AR: $8,800 — 49% of monthly gross rent.
The building is 100% occupied, but Marcus only collected $13,500. His fixed costs — $11,200 mortgage, $1,800 property taxes, $600 insurance — total $13,600. He's $100 short even though the building is "full."
The aging tells the real story: Tenant A (18 days) will probably pay with a reminder — ~90% collection probability. Tenant B (47 days) needs a pay-or-quit notice and may cost $2,000+ in eviction fees — ~40% probability. Tenant C (73 days) is almost certainly a write-off — ~15% probability.
Marcus's cash-on-cash return based on collected rent tells a very different story than his income statement. The AR report is the truth teller.
Pros & Cons
- Catches cash flow problems early — AR aging reveals collection issues weeks before your bank balance does
- Exposes screening failures — Chronic AR in specific units points to tenant selection criteria that need tightening
- Improves forecasting — Knowing what's outstanding and how old it is lets you project actual cash receipts
- Supports better NOI accuracy — Adjusting for expected bad debt gives you a realistic view of property performance
- Creates an eviction trigger — A firm AR policy (e.g., file at 30 days) removes emotion from collection decisions
- PM software isn't standardized — Different platforms track aging differently, making portfolio-level reporting inconsistent
- Requires tracking discipline — AR aging only works if you update it regularly, not just a monthly rent roll glance
- Can mask real vacancy issues — Cash-basis landlords who skip AR tracking may not realize their vacancy rate understates income loss from non-paying tenants
- Collection costs can exceed the receivable — Pursuing $1,500 in small claims may cost more in time and legal fees than you recover
Watch Out
Don't confuse occupied units with performing units. A tenant who hasn't paid in 60 days is worse than a vacancy — at least a vacant unit isn't accumulating unpaid balances, and you can re-lease it immediately. High occupancy with high AR is more dangerous than moderate occupancy with clean collections.
Set a hard cutoff for AR-to-eviction. Without a policy, you'll negotiate and extend until a tenant owes three months' rent. Decide in advance: 15 days triggers a late fee, 30 days triggers pay-or-quit, no cure means you file. That policy keeps your building solvent.
Adjust your NOI for AR aging. If you're using accrual accounting, your NOI includes rent billed but never collected. Build an allowance for doubtful accounts — typically 2-5% of gross scheduled rent — so your NOI reflects reality.
Ask an Investor
The Takeaway
Accounts receivable is the gap between rent owed and rent collected — and it's one of the most honest metrics in your portfolio. Low AR means your screening works and your cash flow is real. High AR means units are filled but not producing income, your mortgage is due regardless, and your actual returns are worse than your spreadsheet shows. Track it by aging bucket, set firm collection policies, and treat any balance past 60 days as a probable loss. AR won't lie to you the way occupancy numbers can.