A toll free number for business is a phone number your customers can call from a landline without paying, because your business carries the cost. In the US they start with one of seven codes (800, 888, 877, 866, 855, 844 or 833), and you get one through a company called a RespOrg; in the UK the equivalent freephone numbers start with 0800 or 0808 and are free to call from landlines and mobiles.
A free number tells a caller you want to hear from them, wherever they are. It's also one of the few phone decisions that comes with federal rules attached, and a couple of them catch out small businesses every year. Here's how it works, what the regulators say, and how to decide whether you need one.
The seven US toll free codes
The Federal Communications Commission (FCC) lists the toll free codes as 800, 888, 877, 866, 855, 844 and 833. The detail people miss is that they aren't interchangeable. The FCC says dialling a number with a 1-800 prefix reaches a different recipient than dialling the same seven digits with 1-888. Each toll free number is routed to a particular local number behind the scenes.
That matters for branding. If you print 1-800 on your van and a competitor holds the same digits on 1-888, some of your callers will dial the wrong one. If your number is central to your marketing, check who holds the matching digits on the other codes.
How a business gets a toll free number
The FCC sets the rules, but it doesn't hand out numbers and can't tell you whether one is free. Here's the route it describes:
- Pick a RespOrg (Responsible Organization). These are the companies that reserve toll free numbers for subscribers and manage the records. Many also sell the phone service itself.
- Ask the RespOrg to search the toll free database, which RespOrgs can access, for the number or vanity word you want.
- Reserve the number in your business's name. The FCC assigns most numbers on a first-come, first-served basis.
- Point the number at a landline, mobile or cloud phone system, and switch on texting if you want customers to message it.
- Keep the paperwork. If you change provider later, the FCC requires toll free numbers to be portable, so you can move the number to a new RespOrg.
If you can't find a RespOrg, the FCC points people to the Somos help desk, which helps businesses locate one.
The rule that stops you buying a number
This is the insight most guides skip. FCC rules ban three practices. RespOrgs can't warehouse numbers, meaning reserve one without a real subscriber behind it. Subscribers can't hoard numbers, meaning take more than they intend to use. And number brokering, selling or offering to sell a toll free number, is illegal under the same rules.
So if a website offers to sell you a memorable 800 number, be careful. The only exception the FCC describes is for numbers assigned through competitive bidding, such as the numbers in its 833 auction, which it ran as an experiment in using bidding to assign toll free numbers.
Vanity numbers
A vanity number spells a word, name or acronym on the keypad. The FCC's own examples are 1-800-FLOWERS and 1-888-NEW-CARS. They're easy to remember from a radio ad or the side of a truck, but the best words on 800 went long ago, so most businesses now find their word on a newer code, or settle for a memorable string of digits.
Who pays for the call
The caller doesn't pay from a landline, so your business pays for the inbound minutes, usually as part of a monthly plan from your provider. There's one exception the FCC flags: wireless callers are charged for the airtime minutes used on a toll free call unless they have an unlimited calling plan. Most people do now, but the call isn't free to every mobile caller.
Toll free numbers can also take texts if they're text enabled, and your business can text back. For a lot of customers that's the preferred route.
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The UK version: 0800 and 0808
The UK doesn't use the word toll free. Its freephone numbers start with 0800 or 0808, and GOV.UK lists them as free from both landlines and mobiles. That's a stronger promise than the US version, because the caller pays nothing either way. Here's how they compare with the other non-geographic numbers a UK business might pick, using GOV.UK's approximate per-minute costs as of October 2026:
| Number starts with | Type of number | Landline caller pays | Mobile caller pays |
|---|---|---|---|
| 0800, 0808 | Freephone | Free | Free |
| 03 | UK-wide number | Up to 16p | 3p to 65p |
| 0843, 0844, 0845 | Business rate | Up to 7p plus access charge | Up to 7p plus access charge |
| 0870 to 0873 | Business rate | Up to 13p plus access charge | Up to 13p plus access charge |
| 09 | Premium rate | Up to £3.60 plus access charge | Up to £3.60 plus access charge |
If you want a single national number but don't want to pay for every call, an 03 number is the middle ground: callers pay the same as a call to an ordinary landline number.
US and UK side by side
| United States | United Kingdom | |
|---|---|---|
| Codes | 800, 888, 877, 866, 855, 844, 833 | 0800, 0808 |
| Free for mobile callers? | Not always: airtime can be charged | Yes, free from mobiles |
| Who assigns numbers | RespOrgs, first come first served, under FCC rules | Phone providers |
| Can you buy one from a broker? | No, brokering is illegal (auction numbers excepted) | Ask your provider about number transfer |
When a toll free number is worth it
- You sell to customers across the country and want them to call without thinking about cost.
- Your ads run on radio, TV, print or vehicles, where a memorable number drives response.
- You run a support line that people call for longer conversations.
- You want one number that follows you when you move office or switch provider, since portability is a rule.
It's less useful if almost all your customers are local and already have your ordinary number, or if they prefer chat and email. A standard business telephone number or a virtual phone number app may do the job for less.
My advice
If you're getting a toll free number, I'd get it through a provider that is, or works with, a RespOrg, reserve it in your business's own name, and keep the account details somewhere safe so you can port it later. Never pay a stranger for a pretty number: under FCC rules, that's the one shortcut you can't take. If you only need a US presence on a budget, look at a free US phone number first, and upgrade to toll free once calls are coming in.
Frequently asked questions
What is a toll free number for business?
It's a phone number customers can call from a landline at no charge, because the business pays for the call. In the US these numbers start with 800, 888, 877, 866, 855, 844 or 833.
How do I get a toll free number?
In the US you contact a RespOrg, a company that reserves toll free numbers and manages their records. The FCC assigns most numbers first come, first served, and many RespOrgs also provide the phone service.
Can I buy a vanity toll free number from someone else?
Generally no. FCC rules prohibit number brokering, which means selling or offering to sell a toll free number. The exception is numbers assigned through competitive bidding, such as the 833 auction.
Are toll free numbers free from a mobile?
In the US, wireless callers can be charged for airtime minutes on a toll free call unless they have an unlimited calling plan. In the UK, 0800 and 0808 numbers are free from landlines and mobiles.
Can I keep my toll free number if I change provider?
Yes. The FCC requires toll free numbers to be portable, so you can move your number to a new RespOrg when you switch service providers.
