.com versus the new TLDs, honestly compared

.com is still the default, and defaults have a price tag. A decent one-or-two-word .com trades somewhere between the mid four figures and the low six figures. The same string on .io, .ai, .co or .xyz is often a tenth of that. Sometimes a hundredth. For a company eighteen months from profitability, that gap is payroll. So the useful question isn't which extension is better. It's what the premium buys.

What the premium buys, and what it doesn't

Three things, in descending order of how much they matter.

• Insurance against faulty memory. Someone hears your name at a conference, types it three days later, and appends .com because that is what fingers do. If a competitor or a parked page is sitting there, you have lost a visitor who will never appear in your analytics. The leak is trivial for a company running paid acquisition. It is painful for one growing on word of mouth.
• Legitimacy signals, including the boring ones. Some spam filters and some procurement teams still treat unfamiliar extensions with suspicion. Uneven, improving, not zero. If you sell to enterprise, ask your first ten prospects what they think before you sign anything.
• A resale market. A good .com has a deep buyer pool. Most alternative extensions have a shallow one, made up largely of people in your own niche. That doesn't make them worthless. It does mean you should treat the purchase as an expense rather than an asset.

Search ranking is not on the list. Google has been explicit for years that generic top-level domains carry no inherent ranking advantage, and the correlation you think you see between .com and page one is age, links and marketing spend wearing a disguise.

When the alternative is simply the better name

Sometimes the cheaper extension isn't a concession at all.

• You get the exact word. A one-word .co or .io that names your category beats a three-word .com that describes nothing. Clarity in the string outruns familiarity in the suffix nearly every time. If the dictionary word you want is out of reach on .com but available on .xyz, the .xyz is a stronger brand than getledgerapp.com. Not close.
• Your audience already lives there. Developer tooling and .io. AI products and .ai. Design studios and .studio. Inside those audiences the extension reads as a signal. Outside them it reads as "couldn't afford the .com".
• Nobody is typing your URL anyway. App store, marketplace, sales-led, community-led: if that's your growth, the recall gap costs you very little. People who found you through a Slack link don't type anything.
• You don't know what you're selling yet. Spending £40,000 on a domain before product-market fit is a bad trade. Cheap extension now, .com later, is a legitimate sequence and plenty of companies have run it successfully.

The bills that arrive later

The costs of the alternative are deferred, which is exactly why founders discount them.

The .com owner becomes your landlord for life. As you grow, the price of the matching .com grows with you, because the seller can read your funding announcements. Buying at seed is cheaper than buying at Series B. Some companies never buy it and do perfectly well. Others end up paying several multiples of the early number, plus the cost of a rebrand conversation nobody asked for.

It doesn't survive contact with a phone call. "Dot io" needs spelling out. "Dot ai" gets heard as "dot A I" or "dot eye". Say your full domain aloud fifty times before you commit, because you will be doing that in real life within the month.

Registry risk on the long tail. Country-code extensions answer to national policy, and policy moves. Some ccTLDs carry residency requirements; some have shifted pricing or eligibility. Read the registry terms for anything that isn't a generic extension, and check what year two costs. Several new TLDs renew far above their first-year promotional price.

Trademark trouble follows you across extensions. A distinctive name is defensible wherever it sits. A generic name on an obscure extension isn't. Your suffix does nothing for your legal position; the strength of the word does all of it.

Four questions, and the order matters

1. Is the .com run by an active business in your space?

If it is, drop the name entirely, on every extension. You will be fighting that company for search results and misdirected email forever. Choose a different word.

2. What is the .com actually priced at?

Founders assume six figures and never ask. Plenty of good .coms sit in the low four figures. Find out before you rule it out; a keyword domain availability check beats a hand-wave and a guess.

3. Can the cost be spread?

If the .com is right and the lump sum isn't, the maths changes. A monthly payment structure converts a capital decision into an operating one, which is frequently the difference between owning the exact name and settling for the approximation.

4. Would a different .com beat a compromised alternative?

Most founders skip this one. Rather than yourword.io, look at an invented or compound .com you can register outright. The Name Studio generates brandable .com options and verifies each against the live registry, so everything it shows is genuinely obtainable. A clean coined .com usually outperforms a borrowed word on a borrowed extension.

If you go with .ai or .io anyway

Fine. Cover yourself.

• Get the .com price in writing before launch. You may never buy it. Knowing the number means you can budget for the day you want to.
• Register defensive misspellings sparingly. Two or three, redirected. Not twenty.
• Never write your name without the extension. Every deck, every footer, every email signature. Repetition is what trains recall.
• Set a trigger and write it down. "At £1m ARR or Series A, we buy the .com." Documented, because founders forget.

The half most people pay for by mistake

If your name is generic and descriptive, the extension carries more weight, because the string itself does nothing to set you apart. That's the situation where a real category-killer .com justifies what it costs. If your name is distinctive and coined, the extension matters much less, and a good alternative TLD is a perfectly rational trade.

The bad outcome sits between them: a forgettable three-word .com, bought for no reason other than the three letters at the end. Familiar suffix, invisible brand. You paid for the wrong half.