Should You Leave Your VPN On All the Time? When to Keep It On (and Off)

Yes, for most people a VPN should stay on all the time. Your protection only works while the tunnel is up, and the moments you forget to switch it on are usually the moments you needed it. There are a handful of real exceptions, though, and the smart move is to handle them with split tunnelling rather than turning the whole VPN off and on ten times a day.

Why “always on” is the sensible default

A VPN protects two things: what your network can see (your ISP, the café Wi-Fi, the hotel router) and what websites can see (your real IP address). Both protections stop the second the VPN disconnects.

The problem with switching it on manually is human, not technical. You open your laptop at the airport, your email app syncs before you remember, and your traffic has already crossed an untrusted network. Phones are worse: they jump between Wi-Fi and mobile data all day, and every switch is a chance for traffic to slip out unprotected.

So the question isn’t really “should I leave it on?” It’s “what should I do in the few cases where it gets in the way?”

The real costs of leaving a VPN on

Here’s what you actually give up. None of it is dramatic with a good provider.

A bit of speed. Encryption and the extra hop to a VPN server add some overhead. With a modern protocol like WireGuard and a nearby server, most people won’t notice it during browsing or streaming. Providers vary a lot here, which is why speed is one of the criteria in our database: NordVPN, Proton VPN, Surfshark and Mullvad all score 5/5 on it.

A bit of battery on phones. Keeping a tunnel alive costs some power, mostly when the phone wakes up to reconnect. WireGuard-based protocols are much lighter than older ones like OpenVPN, so pick those if your app lets you.

A little extra mobile data. Encryption adds a small overhead to every packet. If you’re on a tight data plan abroad, it adds up slowly; on a normal plan you won’t see it.

Some websites treat you with suspicion. This is the most common annoyance, and it leads to the exceptions below.

Five situations where you might switch it off (or split tunnel)

1. Banking and payment apps

Some banks flag logins from VPN IP addresses, especially foreign ones, and trigger extra checks or block the session. The fix is usually simple: connect to a server in your own country. If your bank still complains, exclude its app with split tunnelling instead of switching the VPN off. We cover this in more detail in our guide to using a VPN for online banking.

2. Local devices at home

Printers, Chromecasts, smart speakers and NAS drives sit on your local network. With a VPN on, your computer may stop “seeing” them. Most good apps have a “allow LAN traffic” or “local network sharing” toggle that fixes this without disabling protection.

3. Your home streaming services

If you’re watching your home Netflix library from home, the VPN does nothing for you except risk a “proxy detected” error. Excluding the streaming app, or the TV, is cleaner. When you’re travelling and want your home catalogue, that’s when the VPN earns its keep.

4. Competitive online gaming

A VPN adds a hop, and in fast shooters every millisecond counts. Some players keep it on for DDoS protection, others turn it off. Our article on VPNs and gaming ping explains when it helps and when it hurts.

5. Work VPNs and corporate devices

Running a personal VPN on top of your employer’s VPN often breaks both. On a work laptop, follow your IT department’s rules, not ours.

Split tunnelling: the “always on, except” setting

Split tunnelling lets you choose which apps or websites go through the VPN and which use your normal connection. It’s the reason “always on” is practical. Your browser, messaging apps and email stay protected; your banking app and local printer go direct.

Most leading VPNs offer it, at least on Windows and Android. Our explainer on VPN split tunnelling shows how to set it up and the mistakes to avoid, like excluding your browser by accident.

How to keep a VPN on automatically

Leaving a VPN on shouldn’t depend on your memory. Three settings do the work for you.

Auto-connect. Most VPN apps can connect at startup, or every time you join a Wi-Fi network you haven’t marked as trusted. Turn on the “untrusted networks” option at minimum.

Kill switch. If the VPN drops, a kill switch blocks internet traffic until it reconnects, so nothing leaks in the gap. Read our kill switch explainer for how the different types work.

A tip on kill switches: some apps offer two levels. The basic one only blocks traffic when the VPN drops unexpectedly. The stricter one blocks all traffic whenever the VPN is off, even if you switched it off yourself. If you want “always on” to really mean always, use the strict mode, and use split tunnelling for the exceptions rather than turning the VPN off.

Always-on VPN at the system level. Android has a built-in “Always-on VPN” option under the VPN settings, as described in Google’s Android help page; depending on your phone and VPN app, you may find the same control inside the app itself. On iPhone and iPad, VPN apps use iOS’s “Connect On Demand” feature to reconnect automatically.

Want to compare all VPNs side by side? Check our full VPN comparison table with scores across 18 criteria.

Leaving it on while travelling

Abroad, the case for “always on” gets stronger, not weaker. Hotel, airport and café networks are exactly where unencrypted traffic is easiest to watch, and you’ll often use them for bookings and payments. Two cautions, though. A few countries restrict or ban VPNs, so check our country-by-country legality guide before you go. And if your bank sees a login from your home country while your card is being used abroad, it may ask extra questions; that’s normal and easy to resolve.

What an always-on VPN doesn’t do

Leaving the VPN on all day doesn’t make you anonymous. Websites still recognise you through cookies, logins and browser fingerprinting. It also doesn’t stop you from typing your password into a fake login page; our article on VPNs and phishing explains why. Think of an always-on VPN as a seatbelt: worth wearing every trip, but not a reason to drive carelessly. Keep your software updated, use a password manager and turn on two-factor authentication alongside it.

Quick decision table

Which VPNs make “always on” easy?

You want three things: a fast protocol, a reliable kill switch, and split tunnelling that actually works. In our database, the providers that score highest on speed and protocols also tend to have the most complete apps.

NordVPN (4.63/5) scores 5/5 on both speed and protocols, with auto-connect, a kill switch and split tunnelling. Proton VPN (4.24/5) also scores 5/5 on speed and protocols, and its free plan is an easy way to see whether always-on suits your habits before paying.

If you’re still unsure whether you need a VPN running at home at all, our article Do I need a VPN at home? looks at that question from the other end.