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Up to half the flat without permission
Updated

🔑 Can I take a subtenant in Finland?

It depends
Quick answer

Yes — half the flat is your statutory right. Under the Residential Tenancy Act a tenant may hand over at most half of the flat to a subtenant without the landlord's permission, provided it causes no significant harm. Handing over the whole flat (re-letting) always requires the landlord's consent. In an owner-occupied flat subletting is your own business — the housing company can't ban it.

📋 The rules

  • A tenant may sublet up to half the flat without permission — provided no significant harm or disturbance results.
  • Handing the whole flat to someone else requires the landlord's consent — otherwise it's a breach of contract.
  • A sublease is its own tenancy: you become a sublandlord with duties (notice periods: 14 days for the subtenant, 1–3 months for the sublandlord).
  • Sublet income is taxable capital income — deduct the corresponding share of your rent and costs.
  • The subtenant's disturbances are your responsibility towards the landlord and housing company.

🔓 Exceptions

  • Housing benefits: a subtenant affects them — report changes to Kela immediately.
  • Student and municipal housing can carry stricter contract terms on subletting — those terms bind.

⚠️ Penalties

Unauthorised re-letting of the whole flat is a termination ground and can bring damages. Undeclared sublet income brings back taxes. Subtenant damage is collected from you.

📎 Sources

Verified: 2026-06-20

❓ Frequently asked questions

Do I need permission for a flatmate?

Not if you hand over at most half the flat and cause no harm — it's a statutory right. Telling the landlord is still fair and practical.

Can I sublet the whole flat for the summer?

Only with the landlord's consent — whole-flat handover is re-letting, and without permission a termination ground.

What are sublease notice periods?

The subtenant may give 14 days' notice; the sublandlord 1 month (under a year) or 3 months (over a year).

Is sublet income taxed?

Yes, as capital income — but you deduct the share of your own rent and costs attributable to the subtenant.

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