State pension (AOW)
You build this up through your social security contributions. Everyone who lives or works in the Netherlands accrues 2% of a full AOW pension each year. This pension is provided by the SVB.
Company pension
This is built up through your employer. Note: not every employer has a company pension scheme. If you are self-employed, see Pension provisions for self-employed professionals | Business.gov.nl for more information.
Private pension
This is not mandatory but you can choose to take out a private pension via an insurance company or bank.
Dutch tax law has several provisions for savings for the future whereby contributions are (partly) tax deductible (and future payments taxable), or saved amounts are tax-free (such as netto-pensioen/lijfrente).