Firewall Cost Comparison 2026: 3-Year Cost of 8 Options

In a firewall cost comparison over three years, the UniFi Cloud Gateway Max is the cheapest credible pick at $199 with no required subscription. A DIY OPNsense box starts at $359 for the base Protectli unit, while subscription firewalls like the FortiGate 40F and SonicWall TZ380 run roughly $1,500 to $2,700. Pay for subscriptions only when compliance demands them.

The appliance is usually the smaller part of the bill. The FortiGate 40F lists at $873 on its own, but a bundle with three years of FortiCare Premium and FortiGuard UTP lists at $2,007 (AVFirewalls). SonicWall’s three-year Essential Protection suite for the TZ380 lists at $1,949.32, two and a half times the $780 appliance (SonicGuard). Every price below was checked on a vendor or reseller page in October 2026 unless it is marked as an estimate.

Firewall cost comparison table (October 2026)

Row sources are the Ubiquiti store, whose $219 figure includes a surcharge Ubiquiti does not explain; Protectli, which showed the VP2420e on backorder; Netgate’s TAC Lite subscription and 4200 listing, which warns the price includes “a fluctuating memory and component cost”; and Firewalla, which states there is no monthly fee.

The Meraki row is iFeelTech’s May 2026 estimate, built on the midpoint of a $300 to $500 market range for a one-year Enterprise license (iFeelTech). All recurring rows assume renewals at today’s price, which is optimistic, and exclude tax and shipping.

What does the recurring fee actually buy?

The recurring fee buys threat-intelligence updates, vendor support and, for some products, a commercial-use license or management access. In most cases basic packet filtering keeps running on hardware you already own. The useful question is what stops working, or stops improving, when you decline to renew.

Open-source firewalls. OPNsense Community Edition costs nothing. The optional €149-a-year Business Edition buys a commercial update repository and selected plugins, but not support, which is sold separately (OPNsense shop). OPNsense vs pfSense covers how the two projects differ.

pfSense Plus. The price depends on whose hardware it runs on. On Netgate appliances, TAC Lite is complimentary for the lifetime of the appliance. On a white box or virtual machine, the $129 TAC Lite subscription is a commercial license for one instance, and Netgate states that business and production use requires a commercial license under its EULA. Over three years, a $359 Protectli running pfSense Plus ($746) lands within $83 of a Netgate 4200 ($829), before any memory and storage for the Protectli.

Prosumer gateways. Ubiquiti includes IDS/IPS on the UCG-Max and sells CyberSecure, which it describes as protection “powered by Proofpoint’s security experts,” as the optional upgrade. Firewalla charges nothing recurring for the box; its MSP service for managing several boxes centrally is optional and sold separately. Firewalla vs pfSense sets that appliance against a DIY build.

NGFW subscriptions. FortiGate, SonicWall and Meraki sell tiered bundles, and the tier moves the total. Stepping the 40F from UTP to Enterprise Protection raises the three-year list bundle from $2,007 to $2,250. SonicWall’s Advanced Protection suite lists at $2,294.16 for three years, against $1,949.32 for Essential. Meraki documents its lapse behaviour precisely: after a 30-day grace period an expired subscription keeps forwarding traffic, but dashboard configuration, monitoring, customer-initiated firmware updates and support all stop until the license is compliant again (Meraki documentation).

How much does inspection throughput cost per gigabit?

Of the boxes with a published inspection figure, the UCG-Max delivers by far the most per dollar: 2.3 Gbps of IDS/IPS for $199, against 600 Mbps of threat protection from a FortiGate 40F that costs $2,007 at list over three years. A firewall that cannot inspect at your line rate is not a saving, so compare inspection figures, not headline firewall numbers.

The figures come from Ubiquiti’s UCG-Max specs, SonicWall’s TZ range page, Fortinet’s entry-level range and Cisco’s MX data sheet. Each is the vendor’s own number under its own test conditions, so read them as ceilings rather than a like-for-like benchmark.

The practical consequence: on a 1 Gbps circuit with inspection switched on, the 40F and MX67 become the bottleneck. Cisco rates the MX67 at only 700 Mbps even as a plain firewall. Fortinet rates the FortiGate 50G at 1.1 Gbps of threat protection, so price that model instead if you want a FortiGate at gigabit speeds. The DIY rows are absent because their inspection throughput depends on the CPU and memory you configure; firewall hardware tiers maps that from Celeron to i5.

What hidden costs change the total?

Electricity, missing components and renewal pricing are the hidden costs, and only renewals are large. At the July 2026 US residential average of 18.31 cents per kWh (EIA), running any appliance below around the clock for three years costs under $160, less than one year of SonicWall Essential Protection at list.

These are this site’s arithmetic (watts × 8,760 hours × 3 years × $0.1831 per kWh) on each vendor’s published figure, including Netgate’s documented idle draw for the 4200 (Netgate docs). Maximum ratings overstate typical draw, so real bills should come in lower.

Components. Protectli’s VP2420e page lists memory (one DDR4-3200 SO-DIMM, up to 32 GB) and storage (M.2 SATA or 2.5-inch SSD) as options without showing prices. Whatever you add belongs in the DIY total; best mini PC for OPNsense covers what to buy at each budget.

Renewal terms. Multi-year prepayment is cheaper per year. SonicWall’s one-year Essential Protection lists at $738.38, while the three-year term works out to $649.77 a year, about 12% less. The 40F’s five-year bundle lists at $2,658, only $651 more than the three-year bundle, so years four and five cost less per year than the first three.

Labour. The cost no table captures is operator time. A no-subscription box moves patching, signature tuning and log review onto you, and that work is part of what an NGFW renewal and support contract replace.

Which firewall should you pick on cost?

Pick on who will maintain the box. An owner-operator without a compliance mandate gets the lowest three-year cost from a UniFi gateway or a DIY OPNsense build. Regulated offices and MSP-managed sites should budget $1,500 to $2,700 over three years for a FortiGate or SonicWall, where the renewal pays for threat feeds and a support contract.

Pick a one-time-cost firewall if:

• You run a home or homelab network and apply firmware updates yourself; see best homelab firewall or, for line-rate sizing, best firewall for gigabit internet at home.
• You run a small office with no PCI DSS or HIPAA scope and someone on staff who reads the logs.
• You want pfSense Plus with vendor support. A $829 Netgate 4200 undercuts a $359 DIY box plus $129 yearly subscriptions within four years, sooner once you add memory and storage.

Pay for a subscription firewall if:

• Your network is in PCI DSS or HIPAA scope and auditors expect vendor-maintained threat services.
• An MSP manages the site and needs a centrally managed, auditable control plane.
• You run several branches that need one SD-WAN policy.
• Nobody on staff will patch firmware.

Model-by-model detail sits in best firewall for small business, and Protectli vs Netgate covers the DIY-versus-vendor hardware question.

FAQ

is a firewall subscription worth paying for?

Yes, if you need vendor threat intelligence, a support contract or compliance evidence, and usually no otherwise. A three-year FortiGate 40F bundle costs $1,486 to $2,007, while a UniFi Cloud Gateway Max is rated at 2.3 Gbps IDS/IPS for $199. Owner-operators who patch promptly can skip the renewal; regulated offices should budget for it.

how much does pfsense plus cost?

pfSense Plus costs nothing extra on a Netgate appliance and $129 a year on your own hardware. Netgate includes TAC Lite support for the appliance’s lifetime with boxes such as the $829 Netgate 4200. On a white box or virtual machine, the $129 TAC Lite subscription is the commercial license for one instance.

is opnsense really free?

Yes, the OPNsense Community Edition is free to download and run on hardware you supply. The optional Business Edition costs €149 a year per installation and adds a commercial firmware repository, GeoIP database access and the OPNcentral plugin. Support is not included in that price, and the Proofpoint ET Pro ruleset is sold separately.

how much electricity does a firewall use?

A small firewall appliance like those compared here draws roughly 13 to 33 watts, which costs about $21 to $53 a year at the July 2026 US residential average of 18.31 cents per kWh. Netgate documents about 13 W idle for its 4200, and Firewalla lists 17 W to 33 W for the Gold Pro.