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Norway Rent Increase Calculator 2026 (CPI Adjustment)

A landlord in Norway can raise the rent only in line with the consumer price index (CPI), at the earliest a year after the last change and with a month's written notice. See your new rent based on the CPI up to August 2026.

Last updated . Figures are for the 2026 tax year.

NOK

When the rent was last set or adjusted

For a first increase, use the month the current rent took effect (normally when the lease started).

New monthly rent

NOK 12,395

Change per month

+NOK 395

CPI change

3.3%

Change per year

NOK 4,743

The consumer price index (CPI) was 100.2 in August 2025 and 103.5 in August 2026, the latest month published. The new rent can take effect from August 2026 at the earliest, and the tenant must get written notice at least one month before.

If the rent has only been adjusted by CPI since then, either party can ask for it to be set to the market level from February 2028. The change then takes effect at least six months after a written request (Tenancy Act section 4-3).

Estimate only: results are indicative and are not tax, legal or financial advice. Your actual tax and payments are set by the Norwegian authorities (the Tax Administration, NAV, Customs, the Land Registry) and depend on your personal situation. Check with them or a qualified adviser before you rely on a figure.

How it works

In Norway a landlord cannot raise the rent whenever the market goes up. During a tenancy the Tenancy Act (husleieloven) gives two ways to change the rent: adjusting it in line with inflation, measured by the consumer price index (konsumprisindeks, CPI), or, after two and a half years, setting it to the market rent (gjengs leie). This calculator does the first: the lawful CPI adjustment of the rent under section 4-2, and the date it can take effect.

The three rules of a CPI adjustment

  1. The increase cannot be larger than the change in the CPI since the rent was last set.
  2. It can take effect at the earliest one year after the previous rent took effect.
  3. The other party must get written notice at least one month before the change.

Either party can ask for the change. The new rent is the current rent multiplied by the CPI in the latest published month and divided by the CPI in the month the rent was last set. The latest month in this calculator is August 2026.

Worked example

The rent of NOK 12,000 was last set in August 2025. The CPI went from 100.2 to 103.5, a rise of 3.3%. The new rent is NOK 12,395, which is NOK 395 more per month or NOK 4,743 more per year.

CPI increase up to August 2026

Rent last setCPI changeNOK 10,000 becomes
August 20253.3%NOK 10,329
August 20246.9%NOK 10,692
August 20239.8%NOK 10,976
August 202122.6%NOK 12,263

Market rent after two and a half years

If the rent has only been adjusted by CPI for at least two years and six months, either party can demand that the rent is set to what is usual for similar homes on similar terms (section 4-3). The demand must be in writing, the change takes effect at the earliest six months later, and the market rent is reduced by the value of improvements the tenant has made. If you cannot agree on what the market rent is, either side can have it decided by an assessment board (takstnemnd). This can push the rent up by more than CPI, or down.

If you are new to Norway

  • Your first increase normally cannot come sooner than a year after the lease started, and later ones a year after the previous change. Use the start of the lease as the "last set" month in the calculator.
  • A rent increase must be in writing, with at least one month's notice.
  • Check what your contract says about electricity and other charges, because these are outside the CPI rule.
  • Overpaid rent can be reclaimed with interest, so keep your payment records.

What this calculator does not cover

It calculates the CPI adjustment for an ordinary home rental. It does not cover commercial leases, rent set as a share of a business turnover, or a separate charge for electricity, water and similar consumption, which follows other rules. It does not model market-rent reviews, which need a comparison with similar homes. Before you accept or send an increase, compare it with your contract. To see how the rent fits with the deposit, use the Norway rent deposit calculator, and if you are weighing renting against buying, see the cost of buying a home in Norway.

Sources: The Tenancy Act, sections 4-2 and 4-3 (regjeringen.no, English translation), Rent Disputes Tribunal: Paying rent, Statistics Norway: Consumer price index, Statistics Norway: CPI by month, table 14710, Tenancy Act, current text (Lovdata, in Norwegian)

Frequently asked questions

How much can a landlord raise the rent in Norway in 2026?
By no more than the rise in the consumer price index (CPI) since the rent was last set. From August 2025 to August 2026 the CPI rose 3.3%, so a rent of NOK 12,000 could go up to NOK 12,395, an increase of NOK 395 a month. A landlord cannot raise the rent simply because market rents have risen.
How often can the rent be raised?
At the earliest one year after the current rent took effect, and the tenant must get written notice at least one month before the change (Tenancy Act, section 4-2). If more than a year has passed, the whole CPI change since the last rent-setting can be included. The landlord does not have to adjust the rent every year.
Can the rent go up by more than CPI?
Not through the CPI rule. But once a tenancy has lasted at least two years and six months with no rent changes other than CPI adjustments, either the landlord or the tenant can demand that the rent is set to the market level for similar homes on similar terms (section 4-3). The demand must be in writing and can take effect at the earliest six months later, and the market rent is reduced by the value of improvements you have made.
Can the rent go down?
Yes. Either party can ask for the rent to be changed, so if the CPI has fallen since the rent was last set, the tenant can ask for a matching reduction.
Which CPI figure is used?
The change in Statistics Norway's monthly consumer price index between the month the rent was last set and the latest published month, which is August 2026 in this calculator. Statistics Norway normally publishes a new month around the 10th. From January 2026 the index uses 2025 as the base year (2025 = 100), but this does not affect the percentage change.
What does the landlord have to do to raise the rent?
Send written notice at least one month before the new rent applies. It is sensible for the notice to state the current rent, the new rent, the CPI change it is based on and the date it starts, so you can check the figures. An increase that is larger or earlier than this is not allowed under the CPI rule.
What if I have paid a higher rent than the law allows?
You can demand the difference back, with interest from the day you paid it (section 4-4), unless you are largely responsible for the breach yourself. The rest of the agreement stays valid. If you and the landlord cannot agree, the Rent Disputes Tribunal (Husleietvistutvalget) handles tenancy disputes.
Can the landlord charge more for electricity and water?
Separately, yes. The CPI limit does not apply to an agreed share of the cost of electricity, fuel, water and drainage, which can be adjusted so that the landlord recovers the necessary costs. The Rent Disputes Tribunal notes that a landlord cannot require other additional payments, such as for internet.

Related calculators

→Norway Rent Deposit Calculator (Depositum)→Norway Income Tax Calculator 2026→Cost of Buying a Home in Norway

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