Nintendo tax is when a multi-platform video game is priced abnormally high on all platforms as a result of also being released on a Nintendo platform.

Nintendo Switch game prices are notoriously high (called the switch tax) and Nintendo apparently requires some form of parity on prices as part of their contract. As a result, game prices seem to become inflated even on other platforms that are not Nintendo platforms.
Bob: "This game is a straight port of a ten year old game! why is it so expensive??? "
Joe: "look, it's also on the switch... "
Bob: "Ah, I see, it's the Nintendo tax."
by Triadne September 8, 2019
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