You're paying for 300 Mbps, but your speed test says 142 Mbps. Is something broken? Probably not. Your ISP likely never promised you'd actually get 300 Mbps all the time. The way internet providers advertise speed is confusing on purpose. Let's break down what those marketing phrases really mean and how to figure out if you're getting a fair deal.
What "Up To" Actually Means in Your Contract
Those two little words — "up to" — do a lot of heavy lifting for internet providers. When an ISP says "speeds up to 500 Mbps," they're telling you the maximum speed their network can deliver to your home under perfect conditions. They're not promising you'll ever actually see that number.
The Legal Side: US, UK, and EU
Different countries handle this differently. In the United States, the FCC requires ISPs to disclose speed information through "broadband nutrition labels" (introduced in 2024). These labels must show typical download and upload speeds, latency, and pricing. However, "up to" claims are still legal as long as the ISP can show that some customers actually reach those speeds.
In the United Kingdom, the Advertising Standards Authority (ASA) changed the rules in 2019. ISPs must now advertise a median download speed — the speed that at least 50% of customers get during peak hours (8–10 PM). This was a big improvement over the old system, where ISPs only needed 10% of customers to hit the advertised speed.
The European Union requires ISPs to specify a "normally available speed" and a "minimum speed" in contracts, thanks to the Open Internet Regulation. If your speed regularly drops below the minimum, you may have grounds to exit your contract without penalty.
The Real vs. Advertised Gap
How big is the gap between what's advertised and what you actually get? Studies consistently show that most people receive 50–80% of their plan's maximum speed during normal use. On cable and DSL connections, the gap tends to be larger. Fiber connections are more consistent, often delivering 85–95% of the advertised speed. If you're curious how your connection stacks up, run a speed test right now and compare the result to what your plan promises.
Typical Evening Speed vs. Peak Speed
Your internet connection isn't like a water pipe that delivers the same flow 24/7. It's more like a highway — the more cars on it, the slower everyone goes. This is called network congestion, and it's the main reason your speeds drop in the evening.
Why Evenings Are Slower
Most ISPs use shared infrastructure. Your cable line, for example, is shared with your neighbors. When everyone gets home from work between 7 PM and 11 PM and starts streaming Netflix, gaming, or video calling, the available bandwidth gets divided among more users. This is called peak time or busy hours.
During off-peak hours (like 2 AM–6 AM), you might see speeds very close to your plan's maximum. During peak hours, you could lose 20–40% of that speed on a cable connection. Fiber-to-the-home (FTTH) connections handle congestion better because fiber has far more capacity, but even fiber users can see dips of 5–15% during busy times.
How to Measure It Yourself
Here's a simple test you can do. Run a broadband speed test at three different times in one day:
- Morning (8–9 AM) — moderate traffic
- Afternoon (2–3 PM) — usually lighter traffic
- Evening (8–9 PM) — peak congestion
Write down your download speed, upload speed, and ping each time. If your evening speed is less than 50% of your afternoon speed, congestion on your ISP's network is likely the cause. You should also check your ping during these tests — high ping during peak hours (over 50 ms on a wired connection) is another sign of congestion.
| Time of Day | Typical Speed (% of Plan Max) | Typical Ping (Cable) |
|---|---|---|
| 2 AM – 6 AM | 90–100% | 10–20 ms |
| 8 AM – 12 PM | 80–95% | 12–25 ms |
| 12 PM – 5 PM | 85–95% | 12–25 ms |
| 7 PM – 11 PM (Peak) | 50–80% | 20–50 ms |
ISP Marketing Phrases Decoded
ISPs use specific phrases in their ads and contracts that sound straightforward but have very specific technical meanings. Here's what each one actually means and how much speed you can realistically expect.
| ISP Phrase | What It Sounds Like | What It Actually Means | Typical Real-World Speed (% of Advertised) |
|---|---|---|---|
| "Up to X Mbps" | You'll get X Mbps | X is the theoretical max; your speed can be anything from near-zero to X depending on conditions | 50–80% |
| "Typical speeds of Y Mbps" | You'll usually get around Y Mbps | At least 50% of customers get Y Mbps or higher during peak hours (UK-style regulation) | 70–90% |
| "Best effort" | They'll try their best to give you fast internet | No speed guarantee at all; the ISP has zero obligation to hit any specific number | 40–75% |
| "Dedicated line" | A private, exclusive connection for you | Bandwidth isn't shared with neighbors; common in business plans and leased lines, costs significantly more | 90–100% |
| "Guaranteed speed" | You'll always get at least this speed | Backed by an SLA (service level agreement); if speed drops below the guarantee, you may get a credit or can cancel. Usually only on business-grade plans | 95–100% |
Notice the pattern: the less specific the promise, the less speed you're likely to get. "Best effort" is basically the ISP saying "we'll see what happens." A "guaranteed speed" or "dedicated line" costs more, but you actually get what you pay for. Most home plans fall into the "up to" or "typical speeds" category.
How to Test Whether You're Getting What You Pay For
Knowing the marketing tricks is one thing. Proving you're not getting fair value is another. Here's a practical approach to figure out where you stand.
Step 1: Run Tests at Different Times
Don't rely on a single speed test. Run at least 3–5 tests spread across different times of day over several days. Use a wired Ethernet connection when possible — Wi-Fi adds its own slowdowns that have nothing to do with your ISP. If you're curious about why wired and wireless results differ so much, check out our guide on how to improve Wi-Fi speed.
Step 2: Record Your Results
Write down or screenshot each test result. Note the date, time, download speed, upload speed, and ping. After a week of testing, you'll have a clear picture. Calculate your average download speed and compare it to your plan.
Step 3: Know the Threshold
Here's a good rule of thumb:
- Above 80% of advertised speed — Normal. Your connection is performing within expected range.
- 60–80% of advertised speed — Below average. Worth investigating, especially if it's consistent on a wired connection.
- Below 60% of advertised speed — Something is wrong. Contact your ISP.
Step 4: What to Do If You're Consistently Below 80%
If your tests show you're regularly getting less than 80% of your plan speed on a wired connection, take these steps:
- Restart your modem and router. It sounds simple, but it fixes more problems than you'd expect.
- Rule out your equipment. An old modem might not support your plan's full speed. Check if your modem's DOCSIS version (for cable) or Wi-Fi standard matches what your plan requires.
- Call your ISP with data. Share your test results — dates, times, and speeds. ISPs take complaints more seriously when you have specific numbers.
- File a complaint. In the US, you can file with the FCC. In the UK, contact Ofcom or use an Alternative Dispute Resolution (ADR) scheme. In the EU, contact your national regulatory authority.
- Switch providers. Check the ISP rankings to see which providers deliver the most consistent speeds in your area.
If your ISP offers a "guaranteed minimum speed" in your contract (common in the UK since 2019), and your speed consistently falls below that minimum, you typically have the right to exit without paying an early termination fee.
A Quick Summary
"Up to" speeds are marketing numbers, not promises. Most home connections deliver 50–80% of what