Antivirus under $5 a month
6 antivirus products under $5 a month, cheapest first. Microsoft Defender (Windows Security) starts at Free. Avast One Premium Security tops the list at $4.09. Prices checked November 1, 2026.
| Product | Best for | Per month, yearly plan | Checked | Link |
|---|---|---|---|---|
| Microsoft Defender (Windows Security) | Free baseline protection on Windows | Free | November 1, 2026 | Visit |
| Norton AntiVirus Plus | One device, with cloud backup and a password manager | $2.50 | November 1, 2026 | Visit |
| Bitdefender Antivirus Plus | $29.99 first year for 3 devices | $2.50 | November 1, 2026 | Visit |
| Webroot Essentials | Cheap single-device antivirus | $2.92 | November 1, 2026 | Visit |
| AVG Internet Security | One-PC buyers with a free fallback | $3.33 | November 1, 2026 | Visit |
| Avast One Premium Security | Free antivirus with a paid suite above it | $4.09 | November 1, 2026 | Visit |
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