LemonTrades
TL;DR
- A tariff is a tax on imports, paid by the importer. Most of the cost usually reaches buyers as higher prices; some is absorbed by foreign sellers and US companies.
- Tariffs protect some industries but raise costs for the many that use imported parts, and invite retaliation.
- The Supreme Court struck down the IEEPA tariffs in February 2026. The average US tariff rate fell to about 7% in August, still about three times January 2025’s.
- LemonTrades scores every tariff headline for the markets you follow and tells you what it moved within seconds.
Tariffs went from a side topic to the biggest market story of 2025. Here’s how they work, what they do to the economy, and why traders watch every tariff headline.
What is a tariff, and who pays it?
A tariff is a tax on goods brought into a country. The company importing the goods pays it to customs when they arrive, not the foreign country. After that, the cost gets split three ways:
- Buyers pay more if the importer raises prices.
- The importer earns less if it keeps prices steady.
- The foreign seller earns less if it cuts its price to keep the business.
Studies of the 2018–19 tariffs found most of the cost landed on US buyers and companies. The split for the 2025 tariffs is still being studied.
How tariffs affect the economy
- Prices: tariffs raise the price of imports and of US goods that compete with them. Yale’s Budget Lab estimated the 2026 tariff mix would lift the price level by about 0.6% in the short run.
- Jobs: protected industries, like steel, can add jobs, while industries that buy steel, like carmakers, face higher costs.
- Growth: less trade and more uncertainty usually mean companies invest and hire less.
- Retaliation: other countries tax US exports in return, which hits farmers and manufacturers.
- Government revenue: tariffs raise money, though refunds can follow if courts strike them down.
- The dollar: in theory tariffs push the dollar up; in April 2025 it fell instead, as investors worried about US growth.
The US tariffs, 2025 to now
| Date | What happened |
|---|---|
| April 2, 2025 | “Liberation Day” tariffs on most countries under the emergency powers law (IEEPA); the S&P 500 fell about 12% in four days. |
| April 9, 2025 | A 90-day pause on most of the higher rates; the S&P 500 jumped 9.5%, one of its best days ever. |
| February 20, 2026 | The Supreme Court ruled 6–3 (Learning Resources v. Trump) that IEEPA doesn’t allow tariffs. |
| February 24, 2026 | A temporary 10% global tariff under Section 122 of the Trade Act of 1974, also challenged in court. |
| August 2026 | The average effective tariff rate is about 7.1%, against 2.3% in January 2025 (Penn Wharton). |
The ruling didn’t touch tariffs under other laws: Section 232 tariffs on steel, aluminum, copper, cars and more, and Section 301 tariffs on China, which still faces the highest rate of any major partner. Importers are getting refunds of the struck-down tariffs: about $166 billion was collected, and customs had certified about $126 billion of refunds by October 2.
How tariffs move markets
- Stocks fall on new tariffs, hardest for importers, retailers and carmakers, and rally on pauses and deals. See Trump stock market news today.
- Gold tends to rise on tariff fear as a safe haven. See why gold goes up.
- Metals swing on tariffs aimed at them: copper has jumped and slumped on US copper tariff news. See how to invest in copper.
- Currencies of the targeted countries usually fall, like the Chinese yuan and the Mexican peso.
Sources
- Penn Wharton Budget Model: effective tariff rates and revenues (October 14, 2026)
- Yale Budget Lab: the state of US tariffs after the ruling
- Tax Foundation: the Supreme Court tariff ruling
Education, not financial advice. See our disclaimer.
