The core mechanism is easy enough: a country grants a temporary residence permit to non-citizens who commit a minimum sum in housing. The threshold differs greatly between countries, and governments change it more often than buyers expect.
An important distinction stands between the right to reside and citizenship. A residence permit gives you the right to live locally, usually on a renewable basis, but full nationality normally requires years of actual residence. An agent’s promise of citizenship villas in montenegro for sale exchange for a property deal is a warning sign.
Beyond the investment itself, these schemes come with extra obligations. Typical examples include proof of no criminal record, medical insurance, proof of income and a minimum number of days on local soil annually. Ignoring a single condition can end the permit regardless of the property.
Tax residency is a different question altogether. Owning property does not necessarily make you taxable on worldwide income, and crossing the day-count threshold often does. A number of states use a residence test based on days, and the consequences touch foreign income.
The realistic approach is essentially straightforward: buy apartment in slovenia something you would be happy to own, and let the permit be the second reason. These routes are suspended with limited notice, and an apartment bought only for paperwork becomes a poor asset once the rules change.