How to Choose Antivirus Software
Choose antivirus software by checking five things in order: core protection features, coverage for every platform you use, regular inclusion in independent lab tests, which extras come with which plan, and the renewal price and privacy terms. Pick the lowest plan that covers your devices and the extras you will actually use.
The best antivirus for you is the one that protects every device you use, is regularly tested by independent labs, includes only the extras you need, and has renewal terms you understand. Brand names matter less than those four checks.
Here is a step-by-step way to compare products without getting lost in plan tables.
Step 1: Start with core protection
Every suite should cover these basics before anything else:
- Real-time malware scanning that checks files and apps as they run
- Web and phishing protection that blocks known malicious and scam sites
- Ransomware protection that helps stop unauthorized encryption of your files
- Firewall or network protection, which may come from the operating system or the suite
If a product's free or entry plan lacks real-time protection, treat it as a trial, not as antivirus.
Step 2: Match the platforms you actually use
List your devices: Windows PCs, Macs, Android phones and tablets, iPhones and iPads. Then check that the plan covers each one.
Platform support is not identical. On iPhone, for example, apps cannot scan the system the way they can on Windows, so iOS security apps focus on web protection, scam alerts and a VPN. Surfshark One, for instance, offers antivirus scanning on Windows, macOS and Android, while its iOS app has a different feature set.
Device limits also vary by plan, so check that the plan covers the number of devices you have.
Step 3: Check independent lab testing
Independent labs such as AV-TEST and AV-Comparatives regularly test major antivirus products. Their reports typically look at protection against real threats, performance impact and false alarms.
We do not republish lab scores, because results change between test rounds and a single result can be misleading. Instead, we check whether a product is routinely tested, and we suggest you look up its latest results on the labs' own sites. A product that never appears in independent testing gives you less to go on.
Step 4: Decide which extras you need
Extras are where plans differ most, and where it is easiest to overspend. Decide in advance which ones you will use.
| Extra | Worth paying for if | Note |
|---|---|---|
| VPN | You use public Wi-Fi often or want more privacy online | Some suites limit the VPN on lower tiers; check plan |
| Password manager | You do not already use one | A standalone manager may suit you better |
| Identity monitoring | You want alerts if your details appear in breaches | Scope varies widely between plans |
| Parental controls | You have children using shared devices | Check which platforms are supported |
| Cloud backup | You do not already back up your files | Often Windows only; check plan |
If you already pay for a VPN or password manager, a simpler antivirus plan may be better value than a bundle.
Step 5: Read the renewal and cancellation terms
This step saves the most money. Most antivirus plans offer a discounted first term and then renew automatically at a higher price.
Before you buy, find:
- The renewal price for your plan
- How to turn off auto-renewal
- The refund window and its conditions
- Whether the plan or its features can change at renewal
Set a calendar reminder a few weeks before the renewal date so you can compare options again.
Step 6: Check privacy and trust
Antivirus software has deep access to your device, so the company behind it matters. Read the privacy policy, look for clear opt-outs for optional data sharing, and consider the company's public track record.
For example, in June 2024 the US Federal Trade Commission finalized an order that bans Avast from selling or licensing web browsing data for advertising purposes, after alleging that it sold browsing data through its subsidiary Jumpshot. That history is one reason Avast scores lower on privacy in our ranking.
Also note that under a 2024 US Commerce Department decision, Kaspersky can no longer sell or update its antivirus software in the US, so it is not in our US rankings.
Step 7: Try it before you commit
Many providers offer a free version, a trial or a refund window. Use it to check:
- Does the computer still feel fast during everyday work?
- Are alerts clear, or confusing?
- How often does it push upgrades or extras?
- Can you find the settings you care about?
If a product feels noisy or slow, switch while you are still inside the refund window.
Matching products to needs
Based on our editorial scoring, here is a quick starting point:
- Best all-round protection with a light footprint: Bitdefender
- Identity monitoring bundled in: Norton 360
- Household suite with scam-protection tools: McAfee
- Simplest dashboard: TotalAV, if you watch the renewal price
- Full VPN first, antivirus second: Surfshark One
- Free protection: AVG, Avast or Bitdefender's free Windows edition
- Malware cleanup and scam blocking: Malwarebytes
- Identity protection for the whole family: Aura
- Scam and phishing protection in the browser, alongside your antivirus: Guardio
Still deciding? Our head-to-head pages compare the closest matchups: Norton vs Bitdefender, Norton vs McAfee, Bitdefender vs TotalAV and Avast vs Bitdefender.
Common mistakes to avoid
- Running two antivirus programs at once. Real-time scanners can conflict. Uninstall the old one first.
- Buying the top tier by default. Pay only for extras you will use.
- Ignoring the renewal price. It is often the biggest cost over time.
- Relying on antivirus alone. Updates, unique passwords, two-factor authentication and backups matter just as much.
- Downloading from ads or pop-ups. Install security software only from the provider's official site or official app store.
The bottom line
Choose core protection first, then platforms, then independent testing, then extras, and finally renewal and privacy terms. That order keeps you focused on what protects you and stops the extras from driving the decision.
See our full antivirus rankings, read free vs paid antivirus, or find out how we rank products.
Frequently asked questions
What is the most important feature in antivirus software?
Real-time malware protection with strong web and phishing protection is the core. Extras such as a VPN or password manager are useful, but only after the core protection is solid.
How do I check if an antivirus is any good?
Look up the product on independent lab sites such as AV-TEST and AV-Comparatives, which regularly test major products for protection, performance impact and false alarms. Check the most recent reports, because results change between test rounds.
Should I buy a multi-year antivirus plan?
A longer first term can lock in a discount, but it also commits you before you know whether you like the product. Check the renewal price and refund terms, and consider starting with a shorter term.
Can I switch antivirus products easily?
Yes. Uninstall the old product first, using the provider's removal tool if it has one, then install the new one. Turn off auto-renewal on the old subscription so you are not charged again.