CPI indexation
CPI indexation (KPI-regulering) is a contract mechanism where the running rent is adjusted annually in line with the change in the Konsumprisindeksen (KPI, the consumer price index) published by Statistisk sentralbyrå (SSB). The clause is close to universal in Norwegian business leasing: almost all office buildings, warehouses, retail buildings and mixed-use buildings have some form of CPI indexation, and it is the mechanism that protects the landlord against inflation over the term of the contract.
The standard clause lets the rent be adjusted once a year (typically 1 January) by the change in the index from a stated reference month to the same month one year later. If the index has risen 3.5% over the period, the rent increases by 3.5% for the following year. The clauses vary in detail: some contracts use the main consumer price index, others use the index adjusted for energy and tax changes (KPI-JAE), and others again use the index excluding taxes. The difference can amount to 50-100 basis points in a year with high inflation and should be checked in the specific contract, not assumed.
Many clauses have a cap or a floor on the adjustment. A typical example is "minimum 0% increase, maximum 5% increase per year": the landlord is protected against deflation (the rent never falls), and the tenant is protected against extreme inflation spikes. In 2022-2023, when the index in Norway reached 5.4% annually, the cap clauses took effect in many older contracts and led to lower adjustments than the index implied (a significant value for tenants and a lost scenario for landlords). Contracts entered into after this period often have no cap, or a higher cap (8-10%), to avoid the same exposure.
CPI indexation must be distinguished from markedsleie adjustment (rent review). A contract adjusted only by the index will, over a 10-year term, drive the rent significantly below market rent if market rent growth exceeds inflation, as it often does in prime segments. This mechanism is what makes long contracts on underpriced rents an upside potential for buyers, see reversionary yield. Some contracts therefore have a market adjustment at renewal or midway through the term, but this is typically negotiated and rarely standard.
The mechanics of the calculation are simple, but errors in the base index, the reference month or the pro rata calculation are a frequent source of dispute. The invoice must be checked against the specific clause in the contract, not against a general assumption about "CPI indexation". Older contracts with a base index from 1998 (KPI=2000=100) require a specific conversion factor to work against today's index base.
In Placepoint you can compare contract rent and rent range from the property panel when you model future rent development under different inflation assumptions: a central input to a discounted cash flow.
How this looks in Placepoint
In Placepoint you find this in Property panel:
From Placepoint's glossary: CPI indexation
More information: SSB: Konsumprisindeksen, Lovdata: Husleieloven section 4-2, Store norske leksikon: konsumprisindeks
English: Consumer price index (CPI) indexation, index-linked rent adjustment.
Frequently asked questions
How is a typical CPI adjustment calculated?
The rent is multiplied by (new index / old index) for the reference months stated in the contract. If the index was 120.0 in the reference month and is 124.2 one year later, the rent is adjusted by a factor of 1.035 (3.5%). The specific base month and index variant must be read from the contract.
Is CPI indexation required under husleieloven?
No for business leases, where the agreement is free. Husleieloven section 4-2 governs residential leases and sets stricter limits on frequency and notice. Business contracts are free to use other indices or mechanisms, as long as this is clearly agreed.
What is the difference between KPI and KPI-JAE?
KPI is the main index for Norwegian consumer prices, including energy and taxes. KPI-JAE is "KPI adjusted for tax changes and excluding energy goods", a more stable indicator that Norges Bank uses in monetary policy. Business contracts most often use the main index, KPI, but some long contracts specify KPI-JAE to avoid swings from energy and tax changes.
What is a typical cap on CPI indexation?
Older contracts (before 2022) often had a cap of 3-5%. Contracts from the inflation period 2022-2024 often have a 6-10% cap or no cap. The floor (the smallest adjustment) is typically 0%, so the rent never falls in a period of deflation.