Tower Lease Revenue Calculator
Annual tower lease income from carrier count and terms.
About this calculator
This calculator models a cell tower the way an owner or investor would: as an income property. Gross revenue is simply carrier tenants times the monthly lease rate per carrier, annualized; net operating income (NOI) subtracts the ground lease paid to the landowner (zero if you own the land outright) and monthly operating expenses like power, maintenance, and insurance. To project value over time, it runs a year-by-year loop across the full lease term, compounding revenue at the annual escalation rate you set while growing expenses at a fixed 2% assumption — this captures how real tower leases typically have contractual rent bumps that outpace cost growth, which is exactly what makes tower ownership attractive as an investment. Year-5 and year-10 revenue snapshots are computed the same way, compounding forward from today's rate.
The headline valuation figure applies a 17x multiple to annual NOI, sitting in the middle of the industry's typical 15-20x NOI range for tower asset sales — a la carte, this is a capitalization-rate shortcut (17x NOI is roughly equivalent to a 5.9% cap rate) rather than a discounted cash flow analysis, so it ignores the time value of money, lease-term risk, and market-specific cap rate variation. It also computes the marginal value of adding one more carrier tenant, assuming that additional tenant adds no incremental ground lease cost — a reasonable simplification since ground rent is typically a flat site fee, not per-carrier. Use this for high-level deal screening or portfolio comparisons, not as a substitute for an appraisal when a real tower sale or lease renegotiation is on the table.
Inputs
Results
Annual NOI ($)
$30,000.00
How to Use This Calculator
- Enter the current monthly rent per tenant and the number of tenants on the tower.
- Set the annual rent escalator percentage.
- Input the remaining lease term in years.
- Review the Annual Revenue, Total Lease Revenue over the term, and Tower Valuation based on NOI.
- Use the Capitalized Value output to evaluate a tower sale or monetization at standard cap rates.
How the result changes with Lease per carrier ($/mo)
| Lease per carrier ($/mo) | Annual NOI ($) |
|---|---|
| 1,000 | $6,000.00 |
| 1,500 | $18,000.00 |
| 3,000 | $54,000.00 |
| 5,000 | $102,000.00 |
What each input means
- Carrier tenants
- Number of wireless carriers leasing space on the tower. Typical: 1-4.
- Lease per carrier ($/mo)
- Monthly lease rate per carrier tenant. Range: $1,500-$3,500 for towers, $500-$2,500 for rooftops.
- Annual escalation (%)
- Annual lease rate increase percentage. Industry standard: 2-4%.
- Ground lease to landlord ($/mo)
- Monthly ground lease payment to the land/building owner. $0 if you own the land.
- Operating expenses ($/mo)
- Monthly OpEx: power, maintenance, insurance, property tax, backhaul.
- Lease term (years)
- Total lease term including renewal options. Typical: 20-30 years.
What each result means
- Annual NOI ($)
- Annual Net Operating Income (gross revenue minus all expenses).
- Annual gross revenue ($)
- Total annual lease revenue from all carrier tenants.
- Monthly NOI ($)
- Monthly net operating income.
- Total lease term revenue ($)
- Cumulative gross revenue over the full lease term with escalations.
- Total lease term NOI ($)
- Cumulative net operating income over the full lease term.
- Year 5 annual revenue ($)
- Projected annual revenue in year 5 with escalation.
- Year 10 annual revenue ($)
- Projected annual revenue in year 10 with escalation.
- Tower valuation ($)
- Estimated tower value using 17x NOI multiple (industry standard: 15-20x).
- Value per additional tenant ($)
- How much tower value increases by adding one more carrier tenant.
- Revenue per tenant/yr ($)
- Annual revenue contribution per carrier tenant.
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersCarrier tenants = 2, Lease per carrier ($/mo) = 2000, Annual escalation (%) = 3, Ground lease to landlord ($/mo) = 1000 = 6 input(s) provided
- Calculate Annual NOIAnnual NOI = monthlyNOI * 1230000 = $30,000
- Calculate Annual gross revenueAnnual gross revenue = monthlyGrossRevenue * 1248000 = $48,000
- Calculate Monthly NOIMonthly NOI = monthlyGrossRevenue - monthlyExpenses2500 = $2,500
Engine last updated . Checked against 2 independently-derived tests — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.
Frequently Asked Questions
Why do expenses grow at a fixed 2% while revenue grows at whatever escalation rate I set?
The year-by-year projection loop compounds currentAnnualRevenue at your chosen annualEscalationPct but always compounds currentAnnualExpenses at a hardcoded 1.02 multiplier, representing typical operating cost inflation. This gap is the whole reason tower ownership is attractive: with a 3% rent escalator (the default) against 2% cost growth, NOI grows every year even without adding a single tenant.
How is the tower valuation figure derived, and why 17x?
Tower valuation is simply annualNOI multiplied by 17, a fixed multiple chosen because it sits in the middle of the industry's commonly cited 15-20x NOI range for tower asset sales. The explainer notes this is a capitalization-rate shortcut — 17x NOI corresponds to roughly a 5.9% cap rate — not a discounted cash flow model, so it ignores time value of money and any deal-specific risk premium.
How does the calculator estimate the value of adding one more carrier tenant?
It computes additionalTenantRevenue as one more year of baseLeasePerCarrierMo × 12, adds that entirely to NOI as marginalNOI (with no offsetting increase to ground lease, since that's usually a flat site fee rather than a per-carrier cost), reapplies the 17x multiple to get a new valuation, and reports the difference as valuationPerAdditionalTenant. This is why the marginal value of one tenant can look disproportionately large compared to average per-tenant revenue — it's pure NOI drop-through with no added cost.
What's the difference between the Year 5/Year 10 revenue figures and the Total Lease Term Revenue figure?
Year 5 and Year 10 annual revenue are single-year snapshots — annualGrossRevenue compounded forward by the escalation rate to the power of 4 and 9 respectively — showing what one year's rent looks like at that future point. Total Lease Term Revenue instead sums every year's revenue across the entire lease term inside the projection loop, so it reflects cumulative income collected over the whole lease, not a single year's rate.
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