Tsumori vs Yotei: Plans, Intentions and Yotei in Japanese

English has one word for "plan" and one for "intend", and it barely bothers to separate a wish from a commitment. "I'm going to study Japanese" can mean either I have decided or I'd like to someday, and the listener works it out from context. Japanese refuses that ambiguity. It hands you two different nouns:

• つもり (tsumori) — what you intend, in your head. Nothing is promised.
• 予定 (yotei) — what is scheduled. Time is blocked, other people may know.

Choosing the wrong one is not a grammar error; it is a social one. Saying 予定 (yotei) about something you have not actually arranged makes you look unreliable. Saying つもり (tsumori) about a booking you have already made makes you look evasive.

つもり (tsumori): intention

つもり (tsumori) is a noun meaning "intention" and it follows a plain-form verb directly.

Note the negative. There are two, and they are not interchangeable in feel:

• 〜ないつもりです (nai tsumori desu) — I intend not to do it
• 〜つもりはない (tsumori wa nai) — I have no intention of doing it; the は (wa) makes it sound like a rebuttal, often slightly defensive

つもり (tsumori) attaches to verbs only. It cannot follow a noun — 来週つもりです (raishuu tsumori desu) is broken. For a noun-based plan, you want 予定 (yotei).

One more form worth knowing: 〜たつもり (ta tsumori) means "in the belief that I did" or "as if I had", and it is a different animal entirely.

• 言ったつもりだった (itta tsumori datta, "I thought I had said it")
• 先生になったつもりで話す (sensei ni natta tsumori de hanasu, "speak as if you were the teacher")

予定 (yotei): schedule

予定 (yotei) is a plain noun, so it behaves like one: it takes です (desu), の (no), が (ga), は (wa), and it can be modified by a verb in dictionary form or by a noun.

Because 予定 (yotei) is a noun, it works for other people without any hedging, and it is the normal choice for anything on a calendar:

• 田中さんは来月大阪に行く予定です (Tanaka-san wa raigetsu Oosaka ni iku yotei desu, "Tanaka is scheduled to go to Osaka next month")

That last point matters. Intentions belong to the person having them, so a bare つもり (tsumori) about someone else asserts their inner state; a 予定 (yotei) is an entry in a shared timetable and can be stated about anyone.

Side by side

The test that settles most cases: can you name the date? If yes, it is 予定 (yotei). If the honest answer is "someday", it is つもり (tsumori).

Asking politely uses the same distinction. ご予定はありますか (go-yotei wa arimasu ka, "do you have plans?") is the standard way to ask about someone's availability; asking つもりですか (tsumori desu ka, "do you intend to?") sounds like you are interrogating their motives.

ようと思う (you to omou): the soft decision

Between the wish and the schedule there is a middle form. Take a verb into its volitional form — 行く (iku) to 行こう (ikou, "let's go") — and add と思う (to omou, "I think"):

• 行こうと思います (ikou to omoimasu, "I think I'll go")
• 日本語を勉強しようと思っています (nihongo o benkyou shiyou to omotte imasu, "I've been thinking about studying Japanese")

The 〜ている (te iru) version is the useful one: 〜ようと思っている (you to omotte iru) describes an intention you have been carrying around, which is exactly how English "I'm thinking of…" works. It is softer than つもり (tsumori) — closer to a leaning than a decision — and it is a common way to mention a plan without committing to it.

ことにする / ことになる: the moment of decision

These two complete the set, and they are about the event of deciding rather than the state of intending.

The する / なる (suru / naru) pairing recurs all over Japanese: する (suru) is agency, なる (naru) is outcome. A decision you made is ことにする; a decision that landed on you is ことになる. Japanese speakers use ことになる constantly for work arrangements precisely because it avoids claiming credit or blame for the decision.

When the plan falls through

All four forms have a past tense, and each one reports a different kind of failure.

The difference between つもりだった (tsumori datta) and 予定だった (yotei datta) is the same difference as in the present tense, moved into the past. つもりだった (tsumori datta) admits that the plan was only ever in your head; 予定だった (yotei datta) says the plan was real and something external broke it. If a friend asks why you missed the trip, 行く予定だった (iku yotei datta, "I was scheduled to go") puts the change outside you, while 行くつもりだった (iku tsumori datta) sounds like you never quite committed.

To announce that a plan is changing, Japanese uses 予定 (yotei) with a handful of set verbs: 予定を変更する (yotei o henkou suru, "to change a plan"), 予定が入る (yotei ga hairu, "a plan gets slotted in"), 予定を空ける (yotei o akeru, "to clear one's schedule"), and the very useful 予定通り (yotei doori, "as scheduled"). You will also hear 予定より早く (yotei yori hayaku, "earlier than planned") and 予定を延期する (yotei o enki suru, "to postpone a plan").

Four ways to talk about a future action

Common mistakes for English speakers

1. Using つもり (tsumori) for anything with a date. 明日、会議に行くつもりです (ashita, kaigi ni iku tsumori desu) sounds like you are still deciding whether to attend a meeting that is presumably on a calendar. If the time is fixed, it is 明日、会議に行く予定です (ashita, kaigi ni iku yotei desu).

2. Using 予定 (yotei) for a daydream. いつか日本に住む予定です (itsuka nihon ni sumu yotei desu) commits you to a timetable you do not have. いつか日本に住むつもりです (itsuka nihon ni sumu tsumori desu) is honest.

3. Attaching つもり (tsumori) to a noun. 来週つもりです (raishuu tsumori desu) and 卒業つもり (sotsugyou tsumori) are both wrong. Nouns need 予定 (yotei) — 来週の予定です (raishuu no yotei desu) — or a verb: 卒業するつもりです (sotsugyou suru tsumori desu).

4. Stating someone else's つもり (tsumori) as fact. 彼は行くつもりです (kare wa iku tsumori desu) claims to know his mind. Either hedge it — 彼は行くつもりらしいです (kare wa iku tsumori rashii desu, "apparently he intends to go") — or use the objective 予定: 彼は行く予定です (kare wa iku yotei desu, "he is scheduled to go").

5. Translating every English future as つもり (tsumori). Japanese has no future tense; 行きます (ikimasu) already covers "I will go". つもりです (tsumori desu) adds a claim about your intention, and sprinkling it through ordinary conversation makes you sound like you are constantly announcing your resolve. Use it when the intention is the point.

6. Mixing up 〜ようと思う (you to omou) and 〜と思う (to omou). 行くと思います (iku to omou) is "I think he/I will go" — a prediction. 行こうと思います (ikou to omou) is "I think I'll go" — a decision. The volitional form is what carries the intent.

7. Missing that 〜つもりだった (tsumori datta) implies it did not happen. 買うつもりでした (kau tsumori deshita, "I was going to buy it") usually carries the shadow of "…but I didn't". If it did happen, you want the plain past: 買いました (kaimashita).

8. Using 予定 (yotei) to ask about someone's wishes. 週末、何をする予定ですか (shuumatsu, nani o suru yotei desu ka, "what are you scheduled to do this weekend?") is fine, but 何をするつもりですか (nani o suru tsumori desu ka, "what do you intend to do?") can sound like a challenge. For invitations and casual questions, 週末、何をしますか (shuumatsu, nani o shimasu ka, "what are you doing this weekend?") is neutral.

Summary

Intention is つもり (tsumori); schedule is 予定 (yotei). つもり (tsumori) follows a verb, belongs to the person holding it, and tolerates vagueness; 予定 (yotei) is a noun, carries dates, and can be stated about anyone. Add 〜ようと思っている (you to omotte iru) for the intention you are still turning over, ことにする (koto ni suru) for the moment you decided, and ことになる (koto ni naru) for the moment it was decided for you.

Plans are one of the first things you actually talk about in a new language, and romaji.live practice drills them in whole sentences — you will type 予定 and つもり in situations where the difference is obvious rather than abstract. See tai, hoshii and te hoshii for the wanting that comes before the planning, deshou and darou for how to hedge a plan you are unsure about, and tame ni and you ni for the purposes behind the plans.