-(으)ㄹ게요: The Speaker's Promise / Commitment | Korean Grammar

-(으)ㄹ게요 is the ending you use to promise something to the person in front of you. 제가 할게요 isn't a neutral "I'm going to do it" — it's "I'll do it, so don't worry about it." The whole meaning of -(으)ㄹ게요 lives in that relationship to the listener: it takes your own future action and hands it over as a commitment. This is why it dominates service counters, phone sign-offs, and the small reassurances of daily life.

The shape and its two allomorphs

-(으)ㄹ게요 attaches to a verb stem, splitting by the last sound exactly like the neutral future:

Stem ends in…	Ending	Verb → Form
a vowel	-ㄹ게요	가다 → 갈게요
ㄹ (already)	-ㄹ게요 (keep the ㄹ)	만들다 → 만들게요
any other consonant	-을게요	먹다 → 먹을게요

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Spelling trap that trips up even natives: you write 게, but you say 께. 갈게요 is pronounced [갈께요], 먹을게요 is [머글께요]. The tensed sound is automatic — never spell it 갈께요. The correct spelling is always the plain ㄱ: -(으)ㄹ게요.

What it actually means: a commitment to the listener

The core of -(으)ㄹ게요 is that it's responsive. You're reacting to the here-and-now — a worry, a task that needs doing, the other person's situation — and volunteering yourself to handle it. That's why it feels considerate and reassuring rather than merely informative.

제가 할게요.

jega halgeyo

I'll do it. (so you don't have to worry about it)

다시 전화할게요.

dasi jeonhwahalgeyo

I'll call you back.

먼저 갈게요.

meonjeo galgeyo

I'll head off first. (said as you leave a group)

이따가 연락할게요.

ittaga yeollakalgeyo

I'll get in touch later.

Each of these lands as a small promise: I'll be the one who does this. 먼저 갈게요 isn't just reporting that you'll leave — it's a courteous "I'll take my leave now, okay?" to the people staying behind.

조심할게요.

josimhalgeyo

I'll be careful. (reassuring someone who's worried)

제가 도와줄게요.

jega dowajulgeyo

I'll help you.

이번엔 제가 살게요.

ibeonen jega salgeyo

I'll get it this time. (I'll pay)

Two strict constraints

Because -(으)ㄹ게요 is a promise the speaker makes, it is boxed in by two hard rules that English speakers routinely break.

First person only

Only you can promise your own actions. -(으)ㄹ게요 cannot describe what a third person will do, and it cannot describe the weather or any event outside your control. If the subject isn't "I" (or an inclusive "we" the speaker commits on behalf of), you cannot use -(으)ㄹ게요.

내일 일찍 올게요.

naeil iljjik olgeyo

I'll come early tomorrow.

The classic proof of this constraint is the weather: you cannot say 비가 올게요, because rain can't make you a promise. For a prediction about rain, you need the neutral -(으)ㄹ 거예요.

Never a question

A promise is something you give, not something you ask for. So -(으)ㄹ게요 has no question form. To ask about someone's future or propose doing something together, Korean uses other endings entirely — -(으)ㄹ까요? ("shall we?"), -(으)ㄹ래요? ("wanna?"), or -(으)ㄹ 거예요? ("are you going to?").

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-(으)ㄹ게요 is first person, statement only. It answers the listener's concern with your own action. The moment your sentence needs a different subject, or a question mark, you've left -(으)ㄹ게요 territory — switch to 거예요, -ㄹ까요, or -ㄹ래요.

-(으)ㄹ게요 vs -(으)ㄹ 거예요: the whole point

This is the contrast to burn in. Both are first-person futures, but they do different social work:

	-(으)ㄹ게요	-(으)ㄹ 거예요
Feel	interactive, reassuring promise	neutral plan / prediction
Oriented toward	the listener's here-and-now	just stating a fact
Subject	first person only	anyone (or the weather)
Question?	never	yes: -ㄹ 거예요?

제가 설거지할게요.

jega seolgeojihalgeyo

I'll do the dishes. (offering, responsive)

저는 오늘 설거지할 거예요.

jeoneun oneul seolgeojihal geoyeyo

I'm going to do the dishes today. (just my plan)

The first volunteers you for a task in relation to the other person; the second simply reports your schedule. English blurs both into "I'll do the dishes," which is exactly why learners under-use the warm, offer-shaped -(으)ㄹ게요.

The service-counter register

Because -(으)ㄹ게요 packages your own action as consideration for the person in front of you, it's the native register of shops, cafés, banks, and offices — anywhere staff are constantly committing small actions on a customer's behalf. If you listen to a single café transaction in Korea, you'll hear -게요 several times.

확인해 드릴게요.

hwaginhae deurilgeyo

Let me check that for you.

여기 앉을게요.

yeogi anjeulgeyo

I'll sit here. (taking a seat, letting others know)

카드로 계산할게요.

kadeuro gyesanhalgeyo

I'll pay by card.

Notice 확인해 드릴게요: -(으)ㄹ게요 rides happily on the humble auxiliary 드리다 ("do for [someone respected]"), stacking a promise on top of deference — the polished shape you'll hear from any service worker. The same move gives 도와드릴게요 ("I'll help you," humbly), a warmer, more customer-facing version of 도와줄게요.

The ending also cushions the small announcement of your own exit or next move, so it doesn't land abruptly. On the phone, Koreans rarely just stop talking — they signal the close with -게요:

그럼 이만 끊을게요.

geureom iman kkeuneulgeyo

I'll hang up now, then.

Said flat as 이만 끊어요, that would feel curt; the -게요 turns it into a considerate "I'll let you go now, all right?"

Common Mistakes

1. Turning it into a question. -(으)ㄹ게요 has no interrogative. To ask "shall we go?" or "are you going?", switch endings.

❌ 같이 갈게요?

Incorrect — -(으)ㄹ게요 can't be a question. Use 갈까요? or 갈 거예요?

✅ 같이 갈까요?

gachi galkkayo?

Shall we go together?

2. Attaching it to a third-person subject. Only the speaker can promise. The weather, other people, and events take -(으)ㄹ 거예요.

❌ 비가 올게요.

Incorrect — rain can't make a promise. Predictions use -(으)ㄹ 거예요.

✅ 비가 올 거예요.

biga ol geoyeyo

It'll probably rain.

3. Spelling it as it sounds (께). You hear [께], but you always write 게.

❌ 제가 할께요.

Incorrect spelling — the tense sound is automatic; write 할게요.

✅ 제가 할게요.

jega halgeyo

I'll do it.

4. Dropping -을 after a consonant stem. A consonant stem needs the -을 buffer, just like the neutral future.

❌ 제가 그거 먹게요.

Incorrect — 먹게요 reads as a different ending; you need 먹을게요.

✅ 제가 그거 먹을게요.

jega geugeo meogeulgeyo

I'll eat that one.

Key Takeaways

-(으)ㄹ게요 = "I'll do it (as a commitment to you)." Its meaning is the promise-relationship to the listener, which is why it dominates service and everyday reassurances.
Two hard limits: first person only, and never a question.
Write 게, say 께 — never spell it 께요.
Against -(으)ㄹ 거예요: -게요 is a responsive promise; 거예요 is a neutral plan or prediction that can describe anyone.

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