The Finnish passive hides a genuine trap in plain sight. In Talo rakennetaan "the house is being built," the word talo sits at the front, in the nominative, looking for all the world like a subject — and it is not one. Finnish has a subjectless passive: there is no grammatical subject in that sentence at all. Talo is the object, and it takes object case, not subject case. Getting this right is the difference between sounding fluent and sounding like a word-for-word translation of English. This page is about the syntax of the passive clause — where the object goes and what case it wears.
The passive has no subject
An active clause has a subject (nominative) and, often, an object (accusative or partitive). Finnish's passive deletes the subject slot entirely — it does not demote the doer to a "by"-phrase the way English does. What remains is the verb and its object.
| Active | Passive | |
|---|---|---|
| Sentence | Minä ostan auton. | Auto ostetaan. |
| Doer | minä (subject, nominative) | — none — |
| Thing bought | auton (object, accusative -n) | auto (object, nominative) |
Look at what happened to auto. In the active it is auton, with the accusative -n. In the passive that -n vanishes and it becomes plain nominative auto — even though it is still the object. This is the crux of the whole page.
Auto ostetaan ensi viikolla.
The car will be bought next week.
Uusi silta rakennetaan joen yli ensi vuonna.
A new bridge will be built across the river next year.
Why the object is in the nominative
The rule is not "the object magically becomes a subject." It is a specific, tidy rule about the accusative -n: a total (whole, bounded) object drops its -n and appears in the nominative whenever the clause has no nominative subject. Two constructions strip the subject away — the imperative and the passive — and in both, the total object shows up bare.
| Clause type | Example | Object form |
|---|---|---|
| Active (has subject) | Ostan auton. | auton (accusative -n) |
| Imperative (no subject) | Osta auto! | auto (nominative) |
| Passive (no subject) | Auto ostetaan. | auto (nominative) |
In the plural, the total object takes the nominative plural -t, again with no -n:
Autot myydään huutokaupassa lauantaina.
The cars will be sold at auction on Saturday.
Ovet avataan kello yhdeksän.
The doors are opened at nine o'clock.
Partitive objects stay partitive
Only the total object changes shape. A partitive object — the case of partial, ongoing, or unbounded action — is completely unaffected by the passive. It is partitive in the active and partitive in the passive alike.
Kahvia juodaan Suomessa valtavasti.
A huge amount of coffee is drunk in Finland.
Maitoa ostetaan joka viikko.
Milk is bought every week.
The contrast between Auto ostetaan (total, nominative — a whole specific car, bought and done) and Maitoa ostetaan (partitive — some milk, an unbounded quantity) is the same total-vs-partial object distinction that governs active clauses. The passive changes only how the total object is spelled, not the underlying aspect logic.
Personal pronouns are the exception
There is one place the -n-dropping does not happen: personal pronouns have their own special accusative in -t (minut, sinut, hänet, meidät, teidät, heidät), and it survives the passive intact. Never replace it with the nominative.
Minut valittiin puheenjohtajaksi.
I was chosen as chairperson.
Sinut nähtiin eilen torilla.
You were seen at the market yesterday.
Fronting: the object as topic
Why does the object so often stand at the front? Because Finnish word order tracks information structure: the first slot is the topic (what the sentence is about), the end is the new information (the focus). Fronting the object makes it the topic.
Talo rakennetaan meren rannalle.
The house will be built by the sea. (the house is the topic)
Ensi vuonna rakennetaan uusi koulu.
Next year a new school will be built. (the school is new information, so it comes last)
Both are correct; they answer different questions. Talo rakennetaan… tells you about a known house; …rakennetaan uusi koulu announces a new school. Because the passive has no subject fighting for the topic slot, this reordering is especially free.
Why linguists call it an object, not a subject
Three tests confirm that talo in Talo rakennetaan is an object:
- Case. A partial patient is partitive (Kahvia juodaan). A real subject would be nominative (Kahvi on kuumaa "the coffee is hot"). Partitive is object case.
- No agreement. The verb never agrees with it. Auto ostetaan and Autot ostetaan have the identical verb form — singular and plural alike. A true subject forces agreement (Autot maksavat paljon "cars cost a lot," plural verb).
- Negation flips it to partitive. Objects go partitive under negation, and so does this noun: Autoa ei osteta "the car won't be bought." A subject would not do that.
Autoa ei osteta tänä vuonna.
The car won't be bought this year.
English makes "the house" the grammatical subject of is built; Finnish keeps it an object of a subjectless verb. That structural difference is the whole reason the case comes out "wrong" to an English ear.
Common Mistakes
❌ Auton ostetaan ensi viikolla.
Incorrect — after the passive the total object drops the accusative -n. Use the nominative auto.
✅ Auto ostetaan ensi viikolla.
The car will be bought next week.
❌ Talo rakennetaan rakentajan toimesta.
Unnatural — the Finnish passive names no doer. Don't bolt on a 'by'-agent; if you must name the builder, use an active clause.
✅ Rakentaja rakentaa talon.
The builder builds the house.
❌ Minä nähtiin eilen torilla.
Incorrect — a pronoun object keeps its special accusative -t; use minut, not the nominative minä.
✅ Minut nähtiin eilen torilla.
I was seen at the market yesterday.
❌ Auto ei osteta tänä vuonna.
Incorrect — under negation the object turns partitive: autoa.
✅ Autoa ei osteta tänä vuonna.
The car won't be bought this year.
Key Takeaways
- The Finnish passive is subjectless — the fronted noun is the object, not a subject.
- A total object takes the nominative (sg auto, pl autot), because the accusative -n drops when there is no subject — the very same rule as the imperative (osta auto!).
- A partitive object stays partitive (Kahvia juodaan); negation turns any object partitive (Autoa ei osteta).
- Personal pronouns keep their accusative -t (minut, sinut, hänet) — no dropping.
- Fronting the object makes it the topic; the passive's missing subject leaves that slot free.
- Don't add a "by"-agent — the passive names no doer; switch to the active if you need one.
Now practice Finnish
Reading grammar gets you part of the way. The exercises are where it sticks — free, no signup needed.
Start learning Finnish→Related Topics
- Nominative Objects: Imperatives and PassivesB1 — After an imperative, passive, or necessive verb the singular total object is the bare nominative, not -n — these clauses have no nominative subject.
- Present Passive: puhutaanA2 — How to build the present passive across all verb types — -taan/-tään with harmony — as a single invariant impersonal form: puhutaan, otetaan, syödään, mennään.
- Where the Object GoesB1 — The object's neutral spot is after the verb, but it fronts freely for topic or contrast — and its case never changes with position.
- Total Object Forms: -n, -t, and Bare StemB2 — The total object wears four shapes: genitive -n in the singular, nominative -t in the plural, the bare nominative after imperative/passive/necessive, and -t on pronouns.