Guides · Grammar for YKI
The Finnish cases you actually need for YKI intermediate
11 min read · by the YKIReady editorial team · last reviewed 1 October 2026
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Learners often put off YKI because they are still unsure about all fifteen Finnish cases. You do not need all of them. At intermediate level, raters mainly check whether you can do everyday things in Finnish: write to a landlord, explain a problem or give an opinion. A handful of cases does most of that work. This guide covers those cases, using the situations that keep coming up in YKI tasks.
The core eight
| Case | Ending | Main job | YKI-style example |
|---|---|---|---|
| Nominative | – | Subject, basic form | Asunto on lähellä keskustaa. |
| Genitive | -n | Possession, total object | Ystäväni auto. Ostin auton. |
| Partitive | -a/-ä, -ta/-tä | Part, amount, ongoing action, negation | Juon kahvia. Minulla ei ole autoa. |
| Inessive | -ssa/-ssä | In | Asun kaupungissa. Avain on laukussa. |
| Elative | -sta/-stä | Out of, about | Tulen töistä. Pidän musiikista. |
| Illative | -Vn, -hVn, -seen | Into | Menen kauppaan. Muutin Suomeen. |
| Adessive | -lla/-llä | On, at, having | Minulla on kysymys. Olen bussipysäkillä. |
| Allative | -lle | Onto, to a person | Soitan lääkärille. Kirjoitan vuokranantajalle. |
Town names are a trap: most take -ssa (Helsingissä, Turussa, Espoossa) but some take -lla (Tampereella, Vantaalla, Hyvinkäällä). Learn the ones you use daily as fixed phrases rather than as a rule.
Partitive: the case that decides your grade
Raters see more partitive mistakes than anything else, because the partitive covers so many jobs. These are the patterns that come up again and again in YKI writing and speaking:
- After a negative verb: Minulla ei ole aikaa. En löytänyt avainta.
- Uncountable amounts: Ostin maitoa ja leipää.
- After numbers (except one): kaksi huonetta, kolme vuotta.
- Ongoing or unfinished action: Luen kirjaa (I'm reading it) vs. Luin kirjan (I finished it).
- Feelings and some verbs: Rakastan sinua. Autan naapuria. Odotan bussia.
Location cases: inner vs outer
Finnish has two parallel sets of location cases. The inner set (-ssa, -sta, -Vn) means inside or in something. The outer set (-lla, -lta, -lle) means on or at something, or having something. They come up in almost every YKI task: directions, appointments, describing a flat, saying where you work.
| Where? | From where? | To where? | |
|---|---|---|---|
| Inner | talossa | talosta | taloon |
| Outer | torilla | torilta | torille |
Lähden kotoa kahdeksalta, menen bussilla asemalle ja olen töissä yhdeksältä.
Verb government (rektio): learn the case with the verb
Many verbs need a particular case, and English is no help in guessing which one. A wrong case after a common verb is one of the most visible errors at level 3. Learn each verb together with its case:
| Verb | Case | Example |
|---|---|---|
| pitää (like) | elative -sta | Pidän uimisesta. |
| tykätä (like) | elative -sta | Tykkään tästä asunnosta. |
| kiinnostua | elative -sta | Olen kiinnostunut työpaikasta. |
| tarvita | partitive | Tarvitsen apua. |
| auttaa | partitive | Voitko auttaa minua? |
| soittaa | allative -lle | Soitin isännöitsijälle. |
| muistuttaa | partitive / -sta | Muistutan sinua kokouksesta. |
| osallistua | illative | Osallistun kurssiin. |
Cases you can mostly skip for intermediate
You will see the essive (-na: lapsena, opettajana) and translative (-ksi: tulla terveeksi) often enough to recognise them, and both are worth using once you are confident. The abessive (-tta), comitative (-ine) and instructive (-n: jalan, käsin) mostly turn up in fixed phrases. Learn those phrases as single words and use your study time on the partitive.
A ten-minute daily drill
- Pick five verbs from the government table above.
- Write one true sentence about your own life with each.
- Rewrite each sentence as a negative (this forces the partitive).
- Read them aloud and record yourself — the speaking section rewards the same accuracy.
Frequently asked questions
Will one case mistake make me fail?
No. At intermediate level, raters judge whether your message comes across. Scattered case errors are expected at level 3. Frequent errors that make your text hard to understand will pull your grade down.
Should I learn all case endings for plural too?
Plural partitive (taloja, ihmisiä) and plural genitive are worth knowing for level 4. Other plural forms you can pick up from reading.
Find out which section would let you down — before the real exam does.