Question & answer

Is Windows Defender enough, or do I need paid antivirus?

The short answer

For a careful user on one updated Windows PC, Microsoft Defender is enough. It scored a perfect 6/6 for protection in recent AV-TEST rounds. Paid antivirus pays off when you protect several devices and platforms or family members with riskier habits. It also makes sense if you want a VPN, password manager or identity monitoring included.

In detail

The free-versus-paid question has a different answer in 2026 than it had ten years ago. Microsoft Defender comes built into Windows. It now posts protection scores that match the paid leaders. AV-TEST gave it the full 6 out of 6 in its January-February 2026 home user round. For the core job of stopping malware on a single Windows machine, you no longer need to pay.

What paid suites really sell today is everything around the engine. Defender covers only Windows. Its phishing protection works best in Edge and less well in Chrome or Firefox. It has no VPN or password manager. Cloud backup and identity monitoring are not included either. Picture a family with Windows laptops, MacBooks and Android phones. Add a couple of teenagers. That household has gaps Defender was never designed to fill. Bitdefender and Norton are made for that kind of household.

A simple test helps. Count your devices and list the extras you would really use. Then check whether you already pay for some of them separately, such as a standalone VPN or password manager. If the list is short and your habits are careful, keep Defender and spend the money elsewhere. If the list is long, a suite is usually cheaper than the parts.