Slang meaning
What does BTW mean?
BTW, or “by the way,” introduces a side note, a new topic or something the writer almost forgot: “btw the shop's closed Monday.” Tacked onto the end of a message, it can also make a pointed remark sound casual.
Updated 6 October 2026
By the way: it adds an aside, switches topic, or slips in a reminder as if it were an afterthought.
What BTW can mean
1. A side note or a new topic
The common use. BTW signals a detour from the main point: “great seeing you today, btw I start the new job Monday.” It saves a whole sentence of transition, and the reader knows the next bit is extra. At the start of a message it often means “unrelated, but…”.
2. The not-so-casual afterthought
At the end of a message, btw can carry an edge: “you still owe me for the tickets btw.” Dressing a complaint or reminder as an aside makes it sound lighter, but most readers can tell when the “by the way” is really the point.
3. VAT, in Dutch
In the Netherlands and Belgium, btw is the Dutch abbreviation for value-added tax (belasting over de toegevoegde waarde). Prices marked “incl. btw” include it, and a “btw-nummer” is a VAT number. On a Dutch shop's post or invoice, that's the meaning.
How people use it on Instagram and Facebook
Captions
Creators tack it on for a second message: “Summer menu is here. Btw, the iced latte is back.” It keeps the main caption clean while slipping in news, a credit or a correction people might otherwise miss.
Stories
Text like “btw we're closed tomorrow” or “btw the winner gets announced at 6” works as a quick notice, and the offhand tone suits a post that disappears in a day. It reads as a friendly heads-up rather than an announcement.
DMs and group chats
The classic way to change topic mid-chat, or to add the thing you meant to say at the start. When a message opens with “btw,” a small favour, update or confession is often on its way.
Comment threads
Strangers use it to add a fact or a correction: “btw it's on sale till Sunday.” The pointed kind, “btw that's not how you spell it,” rarely wins anyone over, and on a brand's post it's better answered with a thanks than a debate.
BTW in real conversations
- Direct messageloved dinner. btw you left your scarf at minenoooo, i'll grab it saturday
- CaptionNew flavours on the board today. Btw, we're closing early on Friday.
- Instagram commentbtw the link in your bio isn't workingThanks for the heads-up, it's fixed now.
- Text messagehad fun last night. btw you still owe me for the cablol sending it now
- Story replybtw the large sizes are back fridaysetting an alarm ⏰
How to reply to BTW
Questions people ask
When do you use BTW, FYI or PS?
BTW (“by the way”) adds an aside in the flow of a message. FYI (“for your information”) passes on a fact the reader should know and sounds a little more formal. PS (“postscript”) comes after the main message is finished, a habit from letters. In a DM, all three can introduce an afterthought.
Is “btw” passive-aggressive?
Only sometimes. “Btw, dinner's at 7” is plain information. “Btw, I did the dishes again” is a complaint in disguise, and the reader will hear it. If something matters, saying it directly usually goes better than tucking it behind a btw.
What does “I use Arch btw” mean?
It's a long-running joke in Linux circles about people who mention, unprompted, that they run Arch Linux, an operating system known for its hands-on setup. The btw is the punchline, because the aside is clearly the whole point. People now swap in other things to mock any humble-brag.
Is btw too casual for a business update?
It's fine in a relaxed caption or Story, where it reads as a friendly aside. For a price change or a policy update, lead with the news instead. Putting an important change behind “btw” can look as if you hoped people wouldn't notice.
Related slang
- FYIFor your information: a heads-up that passes on a useful fact, and sometimes a pointed way to correct someone.
- ICYMIICYMI means “in case you missed it”: a label for something shared earlier that you are bringing back.
- TBHShort for “to be honest”: it flags a frank opinion, a small confession or a compliment that is meant sincerely.
- IMOA way of saying “in my opinion”: it marks what you say as your own view rather than a fact, softening advice and disagreement.
- FWIWFWIW means “for what it’s worth”: a modest way to add an opinion, tip or fact without pushing it on anyone.
- NVMNVM means “never mind”: forget what I just said or asked, because it is solved or no longer matters.
More slang meanings
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