Bookkeeping for Commercial Rental Properties
Commercial real estate landlords operate in an accounting environment far more complex than residential — triple-net leases shift operating cost responsibility to tenants, CAM charges require annual reconciliation against actual expenses, and depreciation runs over 39 years with very different cost segregation opportunities. Simple Books Now handles the financial precision that commercial landlords require. Luisa's Enrolled Agent credential ensures your lease structures and expense recoveries are reflected correctly in both your books and your tax returns.
Book a Free ConsultationThe financial mechanics of a commercial lease are fundamentally different from a residential rental. In a triple-net (NNN) lease, tenants pay their proportionate share of property taxes, insurance, and common area maintenance on top of base rent — but those payments flow through your books as both income and expense in ways that must be tracked carefully. Modified gross and full gross leases shift more of those costs to the landlord, requiring a different expense allocation approach. Mishandling CAM income and the offsetting expenses can overstate your taxable income or produce an inaccurate basis for the annual CAM reconciliation you owe tenants by contract.
Commercial properties depreciate over 39 years rather than the 27.5 years used for residential rentals, but cost segregation studies can reclassify a significant portion of a commercial building's cost to 5-, 7-, or 15-year property — an accelerated depreciation opportunity that can generate substantial first-year deductions under bonus depreciation rules. As an Enrolled Agent, Luisa understands how to implement cost segregation study results in your books, how the Section 179 election interacts with commercial property, and how depreciation recapture is taxed when a commercial building eventually sells.
The Financial Challenges We Solve
CAM Charge Reconciliation
Triple-net and modified gross leases require an annual reconciliation of actual common area maintenance costs against the estimated CAM charges tenants paid throughout the year. Overages are billed to tenants; shortfalls are credited. Without a bookkeeper who tracks actual CAM expenses — landscaping, parking lot maintenance, lighting, security — against the estimated pools, year-end reconciliation becomes a contested multi-week exercise instead of a clean report.
Tenant Proportionate Share Calculations
CAM, property tax, and insurance recoveries are allocated to tenants based on their proportionate share of rentable square footage. When tenants turn over, their share changes mid-year, requiring proration calculations and adjustments to your recovery billing. Tracking these allocations manually across multiple tenants is error-prone without systematic bookkeeping.
Tenant Improvement Allowance Treatment
Tenant improvement (TI) allowances paid to new tenants are capital expenditures that must be amortized over the lease term, not immediately expensed. If you receive a lease incentive from a tenant or reimburse their build-out costs, the accounting and tax treatment differs again. Misclassifying TI allowances inflates current-year deductions and understates your asset basis.
39-Year Depreciation and Bonus Depreciation Strategy
Commercial real estate's 39-year depreciation schedule is painfully slow, but cost segregation can reclassify certain building components to shorter recovery periods eligible for 100% bonus depreciation (subject to current phase-down schedules). Without a bookkeeper who can implement the cost segregation results correctly, those accelerated deductions sit on the table.
Lease-by-Lease Income Tracking
A commercial property with six tenants may have six different lease commencement dates, six different rent escalation schedules, six different lease-end dates, and varying CAM estimates. Tracking base rent, percentage rent escalators, and recovery income separately per lease — and ensuring the books match the actual lease terms — requires a property-level accounting discipline that generic bookkeeping software doesn't enforce automatically.
More Than a Bookkeeper — A Federally authorized Enrolled Agent
Most bookkeepers record transactions and hand you a report. Simple Books Now does that — and more. Luisa is a Federally authorized Enrolled Agent: the highest credential the IRS grants. She can represent you in audits, file your returns, and negotiate directly with the IRS — with year-round tax strategy built into your bookkeeping from day one.
For a business owner in your industry, that means one professional who understands your numbers and handles your complete financial picture. No handoffs. No gaps. No surprises at tax time.
- Federally authorized by the IRS — represents you in audits, collections & appeals
- Bookkeeping + tax strategy in one engagement — no coordinating between vendors
- Direct access to Luisa — no junior staff
- Flat monthly rate — no hourly billing surprises
- Works with clients in all 50 states
- Books delivered by the 15th of each month
- Year-round availability, not just at tax time
Everything We Handle for Your Business
Bookkeeping
Monthly reconciliation, clean financials, and reports delivered every month.
Learn more →Tax Resolution
IRS notices, back taxes, audits, and payment plans — handled directly by our EA.
Learn more →Catch-Up Bookkeeping
Behind on your books? We'll get you caught up at a fixed project price.
Learn more →Bookkeeping FAQ
In a gross lease, the tenant pays a flat rent and you cover all operating expenses — property taxes, insurance, maintenance — which are recorded as your expenses and reduce your net income. In a net lease (single, double, or triple), the tenant reimburses some or all of those costs, and those reimbursements are recorded as rental income against which you offset the actual expenses. The gross income and gross expense figures are higher for net-leased properties even if the net income is the same, which matters for lender underwriting and Schedule E presentation.
Commercial security deposits are treated identically to residential ones for tax purposes — they are a liability, not income, when received and only become income if you apply them to unpaid rent or retain them after the lease terminates. However, commercial leases sometimes call the deposit a "last month's rent" payment, which is treated as prepaid rent and is taxable in the year received. The lease language controls the correct treatment, and Luisa reviews the lease terms before posting any deposit.
No — a TI allowance you pay to a tenant is not an immediate deduction. It is capitalized as a leasehold improvement and amortized over the shorter of the lease term (including renewal options you are reasonably certain the tenant will exercise) or the asset's useful life. When the tenant vacates before the lease ends, any unrecovered basis in the leasehold improvement can be written off at that time.
When you sell commercial property, the IRS recaptures depreciation you claimed over the years at a 25% tax rate (unrecaptured Section 1250 gain) rather than the standard long-term capital gains rate. If you claimed bonus depreciation through a cost segregation study on personal property components, those amounts are subject to ordinary income recapture rates. Planning for recapture is one of the most important pre-sale conversations Luisa can have with you as your Enrolled Agent-backed bookkeeper.
Yes — if you pay any unincorporated vendor (sole proprietor, partnership, or LLC taxed as a partnership) more than $600 in a calendar year for services related to your commercial property, you must issue a 1099-NEC by January 31. This includes landscapers, cleaning companies, handymen, and independent contractors. Payments to incorporated vendors (corporations and S-corps) are generally exempt. Luisa tracks vendor W-9 status throughout the year so 1099 season is not a last-minute scramble.
Ready to Get Your Commercial Property Books in Order?
Schedule a free consultation with Luisa and get commercial-grade bookkeeping — CAM reconciliation, depreciation strategy, and lease-level income tracking — backed by a Federally authorized Enrolled Agent.
Book a Free ConsultationNo obligation · 30-minute call · Federally authorized Enrolled Agent