짠테크 (jjantekeu) — When Pinching Pennies Becomes an Investment Strategy
짠테크
짠테크 (jjantekeu) means taking the act of scrimping — down to the price of one coffee, down to a 3,000-won delivery fee — and treating the money you save that way as a real money-management strategy. It’s not about making money by moving big sums around the way you would with stocks or real estate. It’s closer to earning by blocking what goes out.
Picture where this word actually gets said in Korea. Eight thirty in the evening, and an employee at the deli corner of the neighborhood mart starts putting half-price stickers on things. There are people parked in front of that counter with their carts, watching the clock. The person who brews instant coffee in the office pantry at lunch instead of going to the café downstairs. The person with three different step-counting points apps installed. The person getting through a whole week on nothing but what’s left in the fridge. What these people call themselves is 짠테크 (jjantekeu).
The important thing is the word’s temperature. 짠테크 isn’t something to be embarrassed about — it’s a point of pride. In fact, people are more likely to announce it first: “나 요즘 짠테크 중이야” (I’m doing jjantekeu these days). In Korean, 짜다 (jjada) originally means “salty,” but applied to a person it means they don’t part with money easily. It used to be close to an insult. And then 짠테크 came along and promoted that stinginess into a skill (테크). Not miserly but good at this; not unable to spend but having decided not to — that flip is the heart of the word.
So there’s a bit of play mixed into 짠테크. The goal isn’t survival, it’s a game. People post proof of how little they spent this month, trade markdown schedules with each other, compete over who got it cheaper. Miss that lightness and that voluntariness, and you’ll use the word wrong.
A real conversation
Scene: 8:30 p.m., the deli corner of a neighborhood mart. An employee starts putting half-price stickers on the boxed meals.
Jun-kyung: 어? 에밀리 아니야? 너도 이 시간에 여길 오네. Huh? Emily? So you come here at this hour too.
Emily: 야, 8시 반이 황금 시간인 거 몰라? 나 요즘 짠테크 중이거든. Hey, don’t you know 8:30 is prime time? I’m doing jjantekeu these days.
Jun-kyung: 오, 제법인데? 근데 그 초밥은 좀만 더 기다려 봐. 9시 되면 60% 붙어. Ooh, not bad. But hold off on that sushi — at nine they slap 60% off on it.
Emily: 진짜? 뭐야 너, 나보다 한 수 위네. Seriously? What are you — you’re a level above me.
Jun-kyung: 커피값 아껴서 적금 넣은 지 벌써 반년째야. 이게 진짜 짠테크지. I’ve been putting my coffee money into a savings account for six months now. That’s real jjantekeu.
Emily: 대단하다… 근데 오늘은 그 아낀 돈으로 나 초밥 사 줘. That’s impressive… but today, use that saved money to buy me sushi.
This is where it sounds off
✗ (to a friend struggling after losing their job) 너 요즘 짠테크 하나 보다? ✓ (to a friend struggling after losing their job) 요즘 어떻게 지내? 밥은 잘 챙겨 먹고? — How have you been? Are you eating properly? → 짠테크 is what someone calls themselves when they could spend but have chosen to cut back. Attach it to circumstances someone can’t help, and it becomes a jab at their situation. Safest rule: don’t put a name on other people’s frugality.
✗ (in a quarterly report) 하반기에는 전사적 짠테크를 추진하겠습니다. ✓ (in a quarterly report) 하반기에는 전사적 비용 절감을 추진하겠습니다. — In the second half, we will pursue company-wide cost reduction. → It’s new slang, so it sounds flippant in official settings like documents, reports, or the news. For the same meaning, use 절약 (jeoryak) or 비용 절감 (biyong jeolgam).
Example sentences by situation
1. Lunchtime, when a coworker invites you to the café
나 오늘은 패스. 요즘 짠테크 중이라 커피는 탕비실에서 마셔. (na oneureun paeseu. yojeum jjantekeu jung-ira keopineun tangbisireseo masyeo.) I’ll sit this one out today. I’m doing jjantekeu these days, so I drink my coffee in the office pantry.
It’s a refusal, but the point is that there’s no apology in it. Give 짠테크 as your reason and the other person just laughs it off with “오, 독하다” (wow, hardcore). Because it means you’re not broke — you’re someone who has decided to save right now.
2. Listing things you don’t use on a secondhand app
옷장 정리하면서 안 입는 거 다 당근에 올렸어. 이것도 짠테크야. (otjang jeongnihamyeonseo an imneun geo da danggeune ollyeosseo. igeotdo jjantekeuya.) I cleaned out my closet and listed everything I don’t wear on the secondhand app. This counts as jjantekeu too.
짠테크 isn’t only about not spending — it also covers making small amounts of money. Secondhand trading, collecting points, daily app check-ins all belong here.
3. In polite speech, when a senior colleague asks your secret at a company dinner
특별한 건 없고요, 그냥 짠테크 하는 거예요. 배달을 끊었더니 한 달에 이십만 원이 남더라고요. (teukbyeolhan geon eopgoyo, geunyang jjantekeu haneun geoyeyo. baedareul kkeuneonneuni han dare isimman woni namdeoragoyo.) Nothing special, I’m just doing jjantekeu. I quit ordering delivery and found I had 200,000 won left over each month.
짠테크 is a noun, so it slots straight into polite speech. It’s only comfortable when you’re talking about yourself, though. Say “선배님은 짠테크 고수시네요” (You’re a jjantekeu master) to a senior at that same dinner and it’s unclear whether you’re complimenting them or teasing them for being a 짠돌이 (cheapskate).
Related expressions, casual and polite
| Expression | Temperature / intensity | Where it’s used |
|---|---|---|
| 짠테크 (jjantekeu) | Light and proud, with a touch of self-deprecation | Among peers, on social media. About yourself. Not for official documents |
| 재테크 (jaetekeu) | Neutral, professional | Anywhere. Covers stocks, real estate, savings accounts |
| 절약 (jeoryak) | Neutral, a bit stiff and grown-up | Reports, news, advice from adults |
| 짠돌이·짠순이 (jjandori·jjansuni) | Labels for a person, with teasing mixed in | Only with very close friends. Cute about yourself, risky about others |
| 무지출 챌린지 (mujichul chaellinji) | A short, intense event; a game of posting proof | Social media. In one-day to one-week stretches |
The same behavior wears a different expression depending on what you call it. To someone who brings a packed lunch, “절약하시네요” (You’re being frugal) is a well-mannered compliment, “짠테크 하시네요” (You’re doing jjantekeu) is an invitation to laugh together, and “짠돌이시네요” (You’re such a cheapskate) will sting unless you’re genuinely close.
Cultural background — the hour the half-price stickers go on
짠테크 is 짠 (jjan — from 짜다, meaning someone who doesn’t part with money**)** joined to the back half of 재테크 (jaetekeu). 재테크 itself was coined by welding 재무 (財務, finance) to “technology,” and in Korea it has long meant the whole business of putting money to work to grow it. Swap the front syllable for 짠, and you get 짠테크. In other words, the structure of the word is itself a joke — a declaration that if you have no money to put to work, not spending is the technique.
Behind the word’s spread is the shape of urban life in Korea. Salaries have barely moved, while the number of holes that drain a few thousand won at a time — coffee, delivery fees, subscriptions — keeps growing. For people with no room to move big sums around, the remaining option was to plug the leaks, and once that behavior got a name, it suddenly became something you could enjoy. 냉장고 파먹기 (“eating your way through the fridge,” shortened to 냉파), cooking with only what’s already in there; 앱테크 (aptekeu), collecting a few tens of won at a time by watching ads or racking up steps; the 무지출 챌린지 (mujichul chaellinji), spending nothing at all for a whole day — all of these are branches of 짠테크.
Korean dramas and variety shows lean on this feeling often. A character shopping timed to the mart’s closing markdowns, a character saving receipts to fill in a household ledger, a character being unusually grateful for a coffee a friend bought — no dialogue has to explain it; viewers know what stretch of life that person is going through. 짠테크 is the name that calls that stretch plucky rather than pitiful.
There’s one more reason this word is especially useful for learners. When a friend in Korea says “요즘 짠테크 중이야,” that’s both an invitation and a request for understanding. It means let’s not go anywhere expensive, and at the same time it’s a cheerful way of telling you where they’re at. In that moment, rather than firing back “왜? 돈 없어?” (Why? Are you broke?), the far more Korean response is “오, 얼마나 모았어?” (Ooh, how much have you saved up?).
Today’s quiz
Which of the following is the most unnatural place to use 짠테크 (jjantekeu)?
- To a friend: “나 이번 달 배달 끊었어. 짠테크 중이야.”
- In a company quarterly report: “전사적 짠테크로 비용을 줄이겠습니다.”
- When a senior colleague asks your secret at a company dinner: “그냥 짠테크 하는 거예요.”
Answer: number 2. 짠테크 is slang used among peers, and mostly when talking about yourself. Drop it into an official document and a serious plan starts to look like a joke. In that setting, use 비용 절감 (biyong jeolgam) or 절약 (jeoryak). For the record, 1 and 3 differ only in casual versus polite speech — both are perfectly natural. 짠테크 is a noun, so it sits just as comfortably in polite forms like “짠테크 해요 / 짠테크 하고 있습니다.”
Definitions and example sentences are from the National Institute of Korean Language’s Basic Korean Dictionary (krdict.korean.go.kr); that portion of this post, including our translations, is licensed under CC BY-SA 2.0 KR.