Opzeggen: how to cancel Dutch contracts (rent, gym, mobile, energy, insurance)

Cancelling a Dutch contract is rarely as simple as walking away. Each type of contract has its own opzegtermijn (notice period), and the wrong format or the wrong month can cost you another full billing cycle. The Dutch verb is opzeggen, and the noun for the cancellation itself is opzegging. The letter you send is an opzegbrief.

This guide covers what opzeggen actually requires for the five contracts most expats deal with: rent, gym, mobile, energy, and insurance. It includes the legal notice periods, the Dutch phrases your opzegbrief needs to contain, and the small mistakes that quietly extend a contract by another month.

What "opzeggen" means

Opzeggen is the formal act of ending a contract before its automatic renewal. Most Dutch consumer contracts renew automatically (stilzwijgende verlenging) unless you cancel in writing. Stopping payments is not opzeggen. Moving house is not opzeggen. Telling someone over the phone is rarely enough either. The law usually requires a written opzegging, and the burden of proof is on you.

The standard format is a short letter or email that states three things: the contract you are cancelling, the date you want it to end, and a request for a written confirmation (bevestiging). Always send the opzegbrief in a way that can be traced. For higher-value contracts, send a copy by aangetekende post (registered mail) so you have evidence of delivery.

Rental contracts: 1 to 3 months

Dutch rental law makes the tenant's notice period short and asymmetric. As a tenant, you must give one calendar month's notice, ending on the last day of a month. If you send your opzegging on 5 May, the contract ends on 30 June, not 5 June. If you send it on 28 April, it still ends on 31 May, because rental notice always lines up with the calendar month.

Some contracts specify a longer opzegtermijn of two or three months. That clause is enforceable in the vrije sector, but the contract cannot demand more than three months from a tenant. Read the opzeggingsclausule (cancellation clause) before signing and again before sending the letter.

For a full breakdown of rental contract terms, see our guide to the Dutch huurcontract.

A standard rental opzegbrief contains:

Geachte heer/mevrouw, (Dear sir/madam,)

Hierbij zeg ik de huurovereenkomst van [adres] op tegen [datum]. (I hereby cancel the rental agreement for [address] effective [date].)

Ik verzoek u de opzegging schriftelijk te bevestigen. (I request written confirmation of the cancellation.)

Met vriendelijke groet, (Kind regards,)

The "tegen [datum]" phrasing is important. It means "effective on" rather than "from", and it makes the end date unambiguous.

Gym memberships: one month after the initial period

Gym contracts in the Netherlands are governed by the Wet van Dam, a 2011 consumer law that limits how long auto-renewing service contracts can lock you in. After the initial term ends, the gym must let you cancel at any time with a maximum of one month's notice. Annual memberships that automatically renew for another full year are illegal under this law.

In practice this means a 12-month gym contract becomes month-to-month after the first year. You can opzeggen with one month's notice from that point on. The same rule applies to magazines, streaming bundles, and most other recurring consumer services.

The catch is the initial term. If your contract is for one year and you try to cancel after eight months, you typically owe the remaining four months. The Wet van Dam regulates renewal periods, not the initial commitment.

A gym opzegbrief can be short:

Hierbij zeg ik mijn lidmaatschap [lidnummer] op per [datum], met inachtneming van de opzegtermijn van een maand. (I hereby cancel my membership [member number] effective [date], observing the one-month notice period.)

Graag ontvang ik een schriftelijke bevestiging. (Please send a written confirmation.)

Most chains accept opzegging by email or through their app, but check the contract first. A few still require a signed letter by post.

Mobile, energy, and insurance: 30 days standard

The Wet van Dam also covers mobile phone contracts, energy contracts, and most insurance policies. After the initial term, you can cancel with one month's notice (often calculated as 30 days from the date of your opzegging).

For mobile contracts, the initial term is typically one or two years. After it ends, your provider switches you to a month-to-month basis automatically. You can opzeggen at any point from then. The provider must process the cancellation within the agreed notice period and confirm it in writing.

For energy contracts (electricity and gas), the rules differ slightly between fixed-rate and variable-rate contracts. A vast contract (fixed-rate) usually runs for a defined period (one to three years) and ends with one month's notice after the term. A variabel contract (variable-rate) can be cancelled with 30 days' notice at any time.

For insurance other than zorgverzekering, the standard notice is one month after the first contract year. This includes inboedelverzekering (contents insurance), aansprakelijkheidsverzekering (liability), and reisverzekering (travel). You do not need a reason. Send a written opzegging with your policy number.

Zorgverzekering: the 31 December deadline

Health insurance is the exception. You cannot cancel your zorgverzekering at any time of year. Dutch law sets a single annual switching window: between 12 November and 31 December, you can cancel your current policy and sign up with a new insurer for the following calendar year.

If you do not act before 31 December, your existing policy renews automatically for another full year. For more on how this window works and what to compare between policies, see our guide to Dutch zorgverzekering.

In practice, you do not write a separate opzegbrief for zorgverzekering. When you sign up with a new insurer before 31 December, the new insurer cancels your old policy on your behalf. The opzegging happens automatically as part of the switch.

What makes an opzegging valid

A few small details cause most failed cancellations:

The format. Most contracts require a written opzegging. Phone calls and chat messages usually do not count, even if the agent agrees on the call.

The date. Notice runs from the date the company receives the letter, not the date you send it. Add a few days of post for paper letters, or use email or the company's online cancellation form to time-stamp delivery.

The contract reference. Always include your klantnummer, contractnummer, or polisnummer. A cancellation without identification can be ignored.

The confirmation. Always ask for a schriftelijke bevestiging (written confirmation). If you do not receive one within two weeks, send a follow-up.

The final invoice. After the cancellation date, check that you stop being billed. If a charge appears for a period after the agreed end date, refer to your bevestiging and request a reversal in writing.

When opzeggen does not work

If a company refuses to process your opzegging or keeps charging after the agreed end date, your first step is a formal complaint (klacht) to the company itself, with a deadline. If that fails, you can escalate to Consuwijzer, the consumer protection arm of the Dutch government, or to the Geschillencommissie for sector-specific disputes.

Stopping the direct debit (incasso) before you have a confirmed cancellation usually backfires. The company can report you to a debt collection agency, which damages your credit record (BKR-registratie) and creates more cost than the disputed amount. Cancel formally first, then dispute charges through the proper channel if needed.

Practice the vocabulary

TikTaal's free huurcontract scenario covers opzegtermijn, opzegging, and the standard phrases you need for a rental opzegbrief. Every Dutch word is clickable for audio and a translation, and the scenario walks through reading and writing a cancellation in context.