Financial advisors aren't just investment brokers, but can help you optimize your finances to get the max of your local tax regulations or maybe even recommend some foreign jurisdictions as well with more benefits.

Almost every country in the world has some undocumented open loopholes that the rich or the system savvy can exploit to reduce their tax burden, and get a lot more back from the state (or avoid paying in the first place), and the people not knowing them can loose a lot in the long run by not knowing how to play the game in their favor.

For example, in Germany and Austria, there's an insane amount of wealth built on the tax fraud of cash-only businesses, especially for small family businesses in more rural areas where strict audits are less likely. It's not legal, it's fraud, but the people who know the game, know how to exploit it without ever getting caught, that's why flashing and discussing wealth there is socially frowned upon (because many have it obtained through inheritance of a "dark past™" or tax fraud, and it's tough to explain to everyone and the tax man how you bought a new Porsche and a villa in the south of Europe just by selling sausages on the weekend, so everyone flies under the radar by driving old cars and dressing modestly, while sitting on small empires on the side without anyone being the wiser).