The short version.
Tak 21 is a tax category for life-insurance contracts in which your capital is guaranteed. The provider promises you cannot lose the principal. In exchange, the return is low. In most years, just above zero. In many years, below inflation.
Translation: your "safe" pension savings may be quietly losing real value every year you hold them.
Why it gets sold so often.
- It is easy to explain at the counter. The word "guaranteed" carries a lot of weight in a five-minute meeting.
- The commission structure for the advisor is more attractive than for Tak 23, the main alternative, even when the alternative is the better fit.
- Compliance is straightforward. The provider does not need to justify performance against a benchmark.
None of this makes Tak 21 a bad product. It makes it the wrong product, for most people, most of the time. Especially for anyone with a 20+ year horizon.