Enter the latest officially published 12-month CPI change (see the note below).
The calculator shows the maximum legal new rent and the increase in kroner.
How the rent increase is calculated
New rent = Current rent × (1 + CPI change in %)
Section 4-2 of Norway's Tenancy Act gives landlords the right to adjust rent once a year in line with the change in the consumer price index (CPI) over the previous 12 months — no more and no less. The adjustment can happen at the earliest one year after the tenancy started, or one year after the previous adjustment, and the landlord must give the tenant at least one month's written notice.
Note: The default CPI value is taken from the latest officially published figure at the time this page was last updated. Norway's statistics office (SSB) publishes new CPI figures monthly — check ssb.no for the current 12-month change before using this figure for an actual rent adjustment. This calculator covers only the statutory CPI adjustment under Norwegian tenancy law — it doesn't cover the market-rent adjustment allowed every 3 years (which requires a separate process) or other agreed adjustment methods, and it isn't applicable outside Norway.
Frequently asked questions
Does the landlord have to give notice before increasing the rent?
Yes, the landlord must notify the tenant in writing with at least one month's notice before the new rent takes effect.
Can the landlord increase rent by more than the CPI change?
Not under the annual CPI adjustment in § 4-2 — it's capped at exactly the CPI change. The landlord can instead demand a one-off adjustment to market rent every three years in long-term tenancies, which is a separate, more involved process.
How often can rent be CPI-adjusted?
At most once a year — at the earliest one year after the tenancy started, or one year after the previous adjustment.
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