Discussing money in your nation - a taboo or not?

[Central and Eastern Visayas]

It depends on the context and intent. Close friends and relatives will often discuss finances - including incomes - to seek advice or relay their problems, which is generally acceptable. Flaunting income or asking someone how much his/her income is without viable pretext is considered to be rather rude.

Also, asking for the monetary value of gifts/favors is highly frowned upon.

Pretty much this.

[Valcluse]

No. Most people discuss monetary matters quite openly. Recently there was a cafe fight spawned over how much Members of Parliament should be made.

[Tatec]

Good
Person 1: The economy is performing extremely well comrade. I shall of earned enough money to purchase a new TV soon
Person 2: Indeed comrade, the modernization of the Armed Forces is providing countless jobs. I myself shall be upgrading my kitchen

Wrong
Person 1: Did you hear how much the Emperor took from the economy last year?
Person 2: Silence traitor
/normally followed by some intense beating.

[Laapland]

Laaplanders will discuss money and money mattersfairly openly, but it is considered impolite to ask how much money someone makes.

[KludgeMUSH]

Openness and information are regarded as critical to the functioning of the free market, so economic matters here, including salaries, are discussed openly.

[Chece]

It's not taboo to casually talk about money like how one store has expansive chairs. But to talk as a capitalists and to talk about stock markets, gambling, and talk of getting rich is taboo.
Chece does not have a stock market and gambling is banned.