tariff math: no, a 30% tariff does not mean end consumer prices go up 30%

[Quixote1818]

14. It can also depend on the product and what it is made of. For instance an aluminum bat might have several different

tariffs on it.

From ChatGPT after I asked this question:

Here's how it typically works:
The 25% aluminum tariff is a Section 232 tariff specifically targeting aluminum and aluminum-based products, applied in addition to standard tariffs.

The 30% tariff you’re referring to is likely the temporarily reduced Section 301 tariff on general imports from China.

Combined Effect:
If both tariffs apply to the same item (which they can), they are applied sequentially, not simply added together.

Let’s say:

The declared customs value of the bat is $100.

Here's the likely tariff calculation:

First, the 30% Section 301 tariff applies:
$100 × 30% = $30

Then, the 25% aluminum tariff is applied to the new subtotal ($100 + $30 = $130):
$130 × 25% = $32.50

Total tariffs:
$30 + $32.50 = $62.50, or 62.5% effective rate

So, yes, it ends up being more than 55% due to the compounding method.