Business & Ops · Profitability & ROI

Tower Revenue & ROI Calculator

Calculate WISP tower profitability, monthly OPEX, recurring revenue, net profit margin, and CAPEX payback period.

Technical Explainer

WISP Tower Site Financial Modeling & Payback Analysis

Deploying a wireless tower site involves upfront CAPEX (tower hardware, radios, antennas, battery backup) and monthly OPEX (site lease, power, internet backhaul).

Why This Matters For ISPs & WISPs

Analyzing revenue per subscriber and site operational costs enables WISPs to determine the exact number of subscribers needed to reach break-even status.

Interactive Tower Revenue & ROI Calculator Workspace

17 Interactive Engineering Calculators

Free ISP Engineering & Planning Tools

Precision planning tools for WISPs and fiber operators — RF, optical, power, addressing, and business math. No sign-up required.

17 free tools Real-time results Vendor neutral
Wireless & Microwave

Link Budget Calculator

Calculate FSPL, RSSI, and EIRP for wireless links (2.4GHz to 60GHz).

Open calculator
Profitability & ROI

Tower Revenue Calculator

Analyze ISP tower profitability, CAPEX/OPEX, and business Break-Even Point.

Open calculator
FTTH & PON

GPON Splitter Calculator

Plan optical budgets for PON networks. Calculate splitter and fiber loss.

Open calculator
Battery & Backup

UPS Runtime Calculator

Estimate battery backup time based on load (Watts) and battery capacity (Ah).

Open calculator
Addressing & CIDR

IPv4 Subnet Calculator

CIDR to Subnet Mask, Network Address, Broadcast, and Host Range calculator.

Open calculator
NAT & IPv4 Pool

CGNAT Calculator

Plan Carrier-Grade NAT: subscribers per public IPv4, port blocks, and pool capacity.

Open calculator
Speed & Conversion

Data & Bandwidth Converter

Convert Mbps to Gbps, MB to GB, bits to bytes, plus a download time calculator.

Open calculator
Backhaul & Capacity

Bandwidth Calculator

Plan oversubscription ratios and total backhaul capacity requirements.

Open calculator
Kashtrix Savings

ROI Comparison

Compare Kashtrix costs vs legacy platforms (Splynx/Sonar). See how much you can save.

Open calculator
Compliance & SLA

SLA Uptime Calculator

Convert SLA uptime percentages (99.9%) to allowable downtime limits.

Open calculator
Hardware Vendor OUI

MAC Address Lookup

Find the hardware vendor behind any MAC address and decode the OUI bits.

Open calculator
DNS Diagnostics

DNS Lookup

Query live A, AAAA, MX, TXT, NS, CNAME and SOA records for any domain.

Open calculator
Client Detection

What Is My IP

See your public IP address, reverse DNS, ISP and location instantly.

Open calculator
Geolocation

IP Location Lookup

Geolocate any IPv4 or IPv6 address: country, city, ISP, ASN and timezone.

Open calculator
CIDR Aggregation

CIDR Calculator

Expand a CIDR block to its range, or aggregate an IP range into CIDR blocks.

Open calculator
IPv6 Subnetting

IPv6 Subnet Calculator

Network, address range, expanded form and subnet counts for any IPv6 prefix.

Open calculator
RF Power Math

dBm to Watt Converter

Convert RF power between dBm, mW and watts, and dB gain to a linear ratio.

Open calculator
Interactive Calculator Workspace

Tower Revenue Calculator

Tower Profitability Inputs:

Financial Metrics:

Monthly Revenue:$8,100
Monthly OPEX:$1,400
Monthly Net Operating Profit:$6,700 / mo
Break-Even Point: 3 Months (Annual ROI: 536%)
Worked Engineering Example

Real-World Calculation Walkthrough

Scenario

Tower POP with 180 subscribers at $45 ARPU, $600/mo tower lease, $300 power, and $500 backhaul

Input Parameters

Active Subscribers180
Average Revenue Per User (ARPU)$45.00 / month
Monthly Site Expenses$1,400 / month (Lease + Power + Backhaul)
Initial CAPEX Deployment Cost$15,000

Calculation Output

Gross Monthly Revenue$8,100 / month
Net Monthly Operating Profit$6,700 / month
CAPEX Payback Period2.2 Months
Engineering Analysis:Generating $8,100 monthly revenue against $1,400 OPEX delivers $6,700 net monthly profit, fully recouping the $15,000 initial tower build cost in 2.2 months.
Frequently Asked Questions

Tower Revenue & ROI Calculator Engineering FAQs

What is a healthy payback period for a new WISP tower site?

A payback period of 3 to 9 months is considered excellent for WISP tower sites. Payback periods exceeding 18 months signal high site lease or backhaul costs.

What ARPU is typical for fixed wireless residential broadband?

Residential WISP ARPU ranges between $45 and $75/month depending on speed tiers (50 Mbps to 300 Mbps) and market competition.

How can tower co-location leases improve profitability?

Leasing unused tower vertical space or antenna mounts to third-party operators generates secondary passive monthly revenue that offsets site OPEX.