Why It Matters
CapEx is the line between a repair and an improvement, and the IRS cares deeply about the difference. Fix a leaky faucet? That's a repair — deduct it this year against your NOI. Replace the entire plumbing system? That's CapEx — add the cost to your adjusted basis and depreciate it over its MACRS recovery period. The distinction matters for your taxes, your cash flow projections, and your reserves. Budget $200-$500 per unit per year for CapEx, because roofs and HVAC systems don't last forever — and when they fail, the bill is $5,000-$15,000, not $500.
At a Glance
- What it is: Money spent on improvements that extend useful life or add value, capitalized and depreciated rather than expensed immediately
- IRS test: If a project is a betterment, restoration, or adaptation, it's CapEx — not a deductible repair
- Common costs: Roof ($8K-$15K), HVAC ($5K-$10K), water heater ($1K-$2K), appliances ($2K-$5K), kitchen reno ($10K-$25K)
- Reserve benchmark: $200-$500 per unit per year set aside for future capital expenditures
- Tax treatment: Depreciated via MACRS schedules (building = 27.5 years, appliances = 5 years, landscaping = 15 years)
CapEx Depreciation = Component Cost / MACRS Recovery Period (5, 7, 15, or 27.5 years)
How It Works
The repair vs. improvement distinction. The IRS uses the BRA test — betterment, restoration, adaptation. A betterment makes the property materially better (upgrading a 15-SEER AC to 20-SEER). A restoration returns it to working condition after it's deteriorated beyond repair (replacing a 25-year-old roof). An adaptation changes its use (converting a garage into a rental unit). Meet any one test and it's CapEx. Everything else — patching drywall, replacing a broken outlet, fixing a garbage disposal — is a deductible repair.
How depreciation works on CapEx. Spend $12,000 on a new roof and you don't get a $12,000 deduction this year. You add it to your adjusted basis and depreciate over the recovery period. Residential building structure depreciates over 27.5 years — that roof gives you ~$436/year. But appliances are 5-year property ($4,000 set = $800/year) and landscaping is 15-year property. Bonus depreciation lets you accelerate certain deductions upfront, and cost segregation can reclassify components into shorter-lived asset classes.
Why CapEx matters for underwriting. CapEx is excluded from operating expenses in the NOI calculation — NOI measures recurring performance, not one-time investments. But if you don't budget separately, projections look better than reality. A property throwing off $500/month looks great until a $10,000 HVAC replacement wipes out 20 months of profit. Your cash-on-cash return should reflect CapEx reserve contributions, not ignore them.
Real-World Example
Sofia owns a 1985 duplex she bought for $220,000. After operating expenses — property taxes, insurance, management, maintenance — her NOI is $16,800/year. She sets aside $400/unit/year ($800 total) into a CapEx reserve. After three years: $2,400 saved.
Then the 38-year-old HVAC dies. Replacement: $8,500 for a new split system with ductwork modifications. Her reserve covers $2,400, leaving $6,100 out of pocket.
Tax math: this is a capital expenditure (restoration — beyond repair). Without cost segregation, she'd depreciate $8,500 over 27.5 years ($309/year). But her CPA reclassifies the condenser and air handler as 5-year property: $5,500 over 5 years ($1,100/year) plus $3,000 in ductwork over 27.5 years ($109/year). First-year deduction: $1,209 vs. $309 — a 4x improvement.
Lesson: her reserve wasn't enough for a major failure, but it softened the blow. She bumps to $500/unit/year going forward.
Pros & Cons
- Creates depreciation deductions that shelter rental income from taxes for years
- Increases your adjusted basis, reducing taxable gain when you sell
- Funded reserves prevent cash flow emergencies when major systems fail
- Forces disciplined record-keeping that protects you in an IRS audit
- Cost segregation and bonus depreciation can front-load deductions for significant tax savings
- Large cash outlay with no immediate tax deduction — $10,000 today but only ~$364/year on a 27.5-year schedule
- The repair vs. improvement line isn't always clear — gray areas invite IRS scrutiny
- Reserves reduce distributable cash flow, lowering reported cash-on-cash return
- Timing is unpredictable — multiple systems can fail the same year, overwhelming even a funded reserve
Watch Out
Sellers defer CapEx to inflate NOI — inspect before you buy. A property with a "strong" $20,000 NOI might need $15,000 in deferred CapEx (aging roof, failing HVAC, crumbling parking lot) within two years. Always get a thorough inspection and price deferred CapEx into your offer. Those rehab costs at acquisition are CapEx from day one.
Keep receipts and document the BRA test for every project. The IRS can reclassify a "repair" as CapEx (denying your current-year deduction) or vice versa. For every project over $2,500, take before/after photos, keep contractor invoices, and note which BRA criterion it meets. The de minimis safe harbor lets you expense items under $2,500 per invoice ($5,000 with audited financials), simplifying borderline cases.
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The Takeaway
Capital expenditures are the big-ticket investments that keep your property functional — roofs, HVAC systems, appliances, renovations. They're capitalized to your adjusted basis and depreciated over their MACRS recovery period, creating tax deductions that shelter rental income for years. Budget $200-$500/unit/year into a dedicated reserve, know the IRS BRA test so you classify every project correctly, and never underwrite a deal without pricing in CapEx. The property that cash-flows $500/month might only cash-flow $300 after honest reserves — and $300 of real cash flow beats $500 of fantasy every time.