How Do Tariffs Work, and Who Actually Pays Them?

“How do tariffs work?” was one of the most-asked questions on Google in 2025, and it’s easy to see why. Tariffs were in the news almost every week, and most explanations either got too technical or too political. This one does neither. It sticks to how the money actually moves, using the rules U.S. Customs and Border Protection publishes for importers, and then follows that money to the shelf.

The short answer

A tariff is a tax charged on an imported product when it enters the country. It is usually a percentage of the product’s value, though some are a fixed amount per unit. The U.S. sets the rates, and CBP collects the money at the border.

The part people argue about is who ends up carrying the cost. The legal answer is simple. The economic answer depends on the product.

Who writes the check

CBP’s guide for commercial importers spells it out: liability for the payment of duty becomes fixed when an entry is filed with CBP, and “the obligation for payment is upon the person or firm in whose name the entry is filed.” That person or firm is the importer of record, usually the owner or buyer of the goods, or a licensed customs broker acting for them.

In practice, that means a U.S. retailer, wholesaler or manufacturer pays. The exporting country does not send money to the U.S. Treasury, and a foreign factory doesn’t receive a bill from CBP.

Timing matters too. For most shipments, CBP’s guide says an entry summary must be filed and estimated duties deposited within 10 working days of the goods’ entry. So the importer pays before the goods are even on a shelf, which is one reason tariffs show up in business cash flow quickly.

What happens to the cost next

Once Marcus has paid, he has four basic choices, and real businesses usually mix them:

• Raise prices. He adds some or all of the $10,000 to what he charges for bikes. This is the part shoppers notice.
• Absorb it. He keeps prices the same and accepts a smaller profit, often because competitors haven’t raised theirs.
• Push back on the supplier. He asks the factory for a discount, so the exporter shares the cost.
• Change suppliers. He buys from a country with a lower tariff, or from a U.S. maker, which can take months and may cost more anyway.

How much reaches the price tag depends on competition, how easy it is to switch suppliers, and how badly buyers want the product. A store selling something with few substitutes can pass on more of the cost. A store in a crowded market often can’t. That is why two products hit by the same tariff can see very different price changes.

Why prices of U.S.-made products can rise too

Tariffs only apply to imports, but domestic prices can still move. If imported washing machines get more expensive, a U.S. manufacturer selling a similar machine faces less price pressure and may raise its own prices. And many American-made products use imported parts, from steel and aluminum to electronic components, so their costs can rise even though the finished product never crossed a border.

Tariffs vs. sales tax

	Tariff (duty)	Sales tax
Who pays the government	The importer, to CBP	The store collects it from you and pays your state or city
When	When goods enter the country	At checkout
Shown on your receipt?	No; it’s built into the price, if passed on	Yes, as a separate line
Who sets the rate	The federal government	States, counties and cities

Because a tariff is hidden inside the price, you can’t see it the way you see sales tax. If you want to see what sales tax adds to a purchase, our sales tax calculator shows it line by line.

How to tell if a product is affected

Every imported product has a code in the Harmonized Tariff Schedule of the United States, which the U.S. International Trade Commission publishes online. Businesses use it to look up the duty rate for a product from a given country. For shoppers, it’s mostly useful as a reminder of how specific tariffs are: the rate for one kind of shoe can differ from another, and the country the goods come from often matters as much as the product.

Be careful with headlines that blame every price increase on tariffs. Prices also move because of shipping costs, wages, weather, demand and exchange rates. Egg prices in 2025 are a good example: they spiked because of bird flu, not trade policy (we explain that in why eggs got so expensive).

Why governments use tariffs at all

Tariffs are old. Before the federal income tax arrived in 1913, customs duties were one of the main ways the U.S. government paid its bills. Today they bring in a much smaller share of federal revenue, and they are used mostly for other reasons:

• Protecting domestic industries. Making imports more expensive gives U.S. producers of the same product room to compete on price.
• Bargaining. A country can threaten or impose tariffs to push a trading partner to change its own policies.
• Responding to unfair pricing. Special duties can apply when imports are sold below fair value or subsidized by a foreign government.
• Revenue. Tariffs still raise money for the Treasury, which is part of the political debate around them.

Whether a particular tariff is a good idea is a political question, and we won’t settle it here. What we can say is that every one of those goals works by making some imported goods more expensive, and someone along the chain pays for that.

Common myths

• “China pays the tariff.” Not directly. The U.S. importer pays CBP. A Chinese supplier might cut its price to keep the customer, which shifts some of the cost back, but that is a business decision, not a payment to the U.S. government.
• “Tariffs raise every price by the tariff rate.” No. A 25% tariff on a part that makes up 10% of a product’s cost adds far less than 25% to the final price, and some of it may be absorbed along the way.
• “If I buy American, tariffs don’t affect me.” Sometimes they still do, because many U.S.-made products use imported materials and because domestic sellers may raise prices when competing imports get more expensive.
• “Prices will go back down as soon as a tariff ends.” Not necessarily. Prices often fall more slowly than they rise, and businesses may have changed suppliers in the meantime.

What it means for your budget

• Expect delays. Stores often sell existing inventory first, so price changes can lag tariff announcements by weeks or months.
• Watch categories, not single items. If you rely on imported goods in one category, like electronics, furniture or auto parts, budget a little extra there and compare more than one retailer.
• Don’t panic-buy. Buying big items early only helps if you were going to buy them anyway and have the cash. Putting a TV on a credit card at 22% interest to beat a possible 10% price rise is a losing trade.
• Check the math on “tariff surcharges.” If a seller adds a separate fee, our percentage calculator tells you what share of the price it really is.

The bottom line

Tariffs are paid by the importing business, at the border, before the goods are sold. Whether you end up paying more depends on what that business does next, and on whether its competitors do the same. If you want to see how prices you care about are actually moving, our grocery price tracker and inflation pages use official government data and update automatically.