Buying vs. Renting a Modem and Router: Which Is Best?

Key Takeaways

• Overall Recommendation: Buying your own modem and router is generally the best choice for long-term cost savings, better performance, and more network control. For Spectrum users, keep the free modem from your Internet Service Provider (ISP) and purchase your own router to avoid monthly WiFi rental fees and improve overall network performance.
• Cost Savings: Renting a modem/router from an ISP can cost an extra $300/year; buying your own equipment typically pays for itself within 1–2 years. Spectrum offers a free modem, so there's no need to purchase your own unless you want full control. However, they charge for their WiFi router, which you can avoid by using your own.
• Performance and Features: ISP-supplied equipment is often basic or outdated, limiting speed and WiFi coverage. Buying your own router/modem allows for higher performance (e.g., WiFi 6/6E or DOCSIS 3.1) and better stability.
• Customization and Control: Privately owned equipment gives you full access to advanced features: custom configurations, device prioritization, parental controls, guest networks, and more robust security.
• WiFi Coverage: To eliminate dead zones in larger homes, consider a mesh WiFi system like TP-Link Deco or Netgear Orbi. Many find ISP routers lacking in range and speed, prompting upgrades to more powerful consumer-grade routers.
• When Renting Might Be Better: Short-term living arrangements (e.g., rentals or temporary housing). Less tech-savvy users who prefer ISP support and free equipment replacements. If your ISP includes equipment for free (like Spectrum’s modem), there’s less incentive to buy your own unless you want the best performance.
• Important Buying Tips: Ensure modem/router compatibility with your ISP and check their approved device list. Get a DOCSIS 3.1 modem (if using cable Internet) for future-proofing. Use separate modem and router units for flexibility and better performance (avoid modem-router combos unless high quality). Keep router firmware up to date to maintain speed and security.

Everyone wants fast Internet speeds, but not all Internet service providers offer the same packages. Many ISPs, including Comcast Xfinity, Spectrum, and Cox, offer their own equipment that you can rent for a monthly fee, but in most cases, you can also buy your own modem or router.

Let’s talk about which option is best.

Should I Buy My Own Modem and Router?

If you want the fastest WiFi speeds available and more control over your home network’s Internet connection, the cost of buying a new modem and router is worth the upfront cost.

Buying vs. Renting: Running the Numbers

Buying

Buying a new DSL or cable modem and router can cost anywhere from $50-$350 each. Or, instead of buying a separate modem and router, you can purchase a modem-router combo for $300-$500.

The downside of buying is that your equipment will go through normal wear and tear, meaning you will eventually have to pay to replace both items. Most modems and routers are generally replaced about every 3-4 years.

Buying wins if:

• You plan to stay in your home for over two years.
• You want faster speeds and stronger WiFi coverage.
• You prefer full control over settings, updates, and features.
• You want the flexibility to change ISPs without exchanging devices.

Renting

Depending on the ISP you choose, renting can cost up to an extra $120-$300/year in equipment fees on your Internet bill.

In the long run, if you don’t buy the top-dollar, premium equipment, buying a modem and router is a more affordable option for high-speed Internet.

Renting equipment makes sense if:

• You’re in a short-term or temporary living situation.
• You move frequently and don’t want to carry equipment around.
• You prefer your ISP to handle all setup and tech support.
• You want free replacements if the hardware fails.

Cost Breakdown Table

Example: If you pay $15/month to rent, you’ll spend $180 per year — meaning a $200 router pays for itself in just over 13 months.

Do I Need an Expensive Modem or Router?

Buying your own equipment doesn’t have to be expensive. You can easily buy your own modem or router from an online retailer like Amazon.

Modems and routers are equipped to handle a certain amount of bandwidth, meaning you should check your Internet plan’s maximum download speed before making a purchase. There’s no point in buying a super high-end device that you don’t even have the speed to match!

Buying Your Own Modem

If you decide to buy your own equipment, make sure you buy a compatible modem. Cable Internet modems are categorized by the DOCSIS (Data Over Cable Service Interface Specification) standard. This technology determines how quickly your modem can send and receive data over your ISP’s cable network.

There are currently two versions still in use — DOCSIS 3.0 and DOCSIS 3.1 — and each generation brings faster speeds, greater efficiency, and better network stability.

• DOCSIS 3.0: Supports download speeds up to about 1 Gbps. It’s still suitable for lower- to mid-tier Internet plans and is often more affordable. However, some providers are starting to phase out support for DOCSIS 3.0 modems.
• DOCSIS 3.1: Offers download speeds up to 10 Gbps and significantly better performance for multiple connected devices. It’s built to handle gigabit and multi-gigabit Internet plans and is recommended for most modern households — especially if you want to future-proof your setup for faster speeds down the road.

Because some ISPs no longer activate DOCSIS 3.0 modems, it’s important to verify your modem is DOCSIS 3.1 compatible before purchasing. If you aren't sure what to buy, make sure to contact your ISP to clarify before spending any money.

Best Modems for Common ISPs

Spectrum

If you’re a Spectrum customer, you get a free modem provided by the ISP — but you can still upgrade to your own to ensure top-tier performance and future-proof connectivity, especially for gigabit plans.

• Arris SURFboard SB8200
  • Key Specs: DOCSIS 3.1, supports up to 2.0 Gbps, 2× 1G Ethernet port.
  • Best For: Spectrum Gigabit and Ultra plan users seeking maximum performance and longevity.
• Linksys CG7500
  • Key Specs: DOCSIS 3.0, built-in WiFi gateway, supports speeds up to 1 Gbps (ideal for plans up to 500 Mbps).
  • Best For: Spectrum Internet and Internet Ultra users who want an all-in-one modem/router setup and an affordable, easy-to-manage solution.

Xfinity

Comcast Xfinity offers a wide range of speeds, so the right modem depends on your plan. Xfinity-certified DOCSIS 3.1 models are recommended for high-performance and gigabit connections.

• NETGEAR CM2050V
  • Key Specs: DOCSIS 3.1, supports speeds up to 2.5 Gbps, multi-gig Ethernet port for maximum throughput.
  • Best For: Xfinity Gigabit Extra or Gigabit Pro plans and users who need stable, high data capacity.
• Arris SURFboard SB8200
  • Key Specs: DOCSIS 3.1, supports up to 2 Gbps with dual Gigabit Ethernet ports.
  • Best For: Users on gigabit plans seeking reliable, long-term performance with future compatibility.

Cox / Optimum

Cox and Optimum customers benefit from a variety of approved third-party modems, making it easy to save on monthly rental fees and upgrade to higher speeds when needed.

• Motorola MB8600 (Cox)
  • Key Specs: DOCSIS 3.1, supports speeds up to 1 Gbps, standalone modem (no built-in router), low latency for smooth performance.
  • Best For: Users with Cox gigabit plans who want a reliable, high-speed modem without extra features or a built-in gateway.
• Netgear CM1000 (Optimium)
  • Key Specs: DOCSIS 3.1, supports up to 1 Gbps, strong performance and reliability.
  • Best For: Cox or Optimum users seeking a future-proof solution for current gigabit or upcoming high-speed plans.

Buying Your Own Router

There are many great products on the market that can improve your connectivity.

Some of the benefits of buying your own WiFi router include warranties, potentially higher Internet speed, and you won’t have to rely on your Internet provider’s tech support to troubleshoot if something goes wrong.

Our top recommendations are:

• ASUS RT-AX5400: WiFi 6 with strong performance.
• TP-Link Deco X55 (AX3000): Affordable mesh system for full-home coverage.
• Netgear Orbi series: Premium mesh solutions.
• Eero: User-friendly mesh option.
• Ubiquiti: Great for users who want advanced settings and enterprise-grade control.

If you’re still unsure which router is right for you, refer to our list of approved equipment for Spectrum, Comcast Xfinity, Cox, Optimum, and more.

Frequently Asked Questions

I live in an apartment — should I buy or rent my modem and router?

If your apartment offers short-term leases or includes home Internet service, renting might make sense for convenience and easy setup. However, if you’re staying longer than a year, buying your own router (and modem, if you need it) can save you money and improve WiFi coverage. Compact mesh systems like the TP‑Link Deco are great for smaller spaces and multi‑room apartments.

I move a lot—should I still buy?

If you move frequently or change ISPs often, renting can save you the hassle of setup, compatibility issues, and packing gear each time you relocate. Still, you might consider buying a universal DOCSIS 3.1 modem, since many cable providers (Spectrum, Xfinity, Cox) support the same models nationwide. That way, you can take your equipment with you when you move.

My ISP offers a “free” modem. Should I buy one anyway?

If your ISP provides a free modem (like Spectrum does), keep it. There’s no advantage to replacing a free unit unless you want newer technology or more control. What’s more worthwhile is buying your own router, since ISPs usually charge an extra monthly fee for WiFi service.

I’m not tech‑savvy. Will buying my own router make life harder?

Not necessarily. Many modern routers (like Eero, ASUS, or TP‑Link Deco) come with smartphone apps that make setup simple, sometimes easier than the ISP’s rental equipment. They also offer automatic updates and parental controls.

What happens if my equipment fails?

When you rent, your ISP will replace defective equipment for free. When you buy, warranty coverage depends on the manufacturer and is typically 1-2 years. Some users even keep an older modem as a backup in case of downtime.

Find the Internet Service that Fits Your Needs with SmartMove

Do you want the best Internet access for your money? Don’t overpay for equipment rental fees. Whether you want to rent your modem and router or buy your own, SmartMove can find the provider that fits your needs and budget.

We find the providers in your area, ensuring you have access to all the latest deals and coverage options, giving you a simplified way to connect for less.