Tariff Cost Calculator — How Much Will Tariffs Add to the Price?

See how a tariff changes the price of imported goods — the duty amount, the new price, and the percentage increase you'll feel as a buyer. ✓ Instant

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Tariff Cost

Duty • New price

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Enter a price and tariff to see the impact

How the Tariff Calculator Works

  1. Enter the pre-tariff price and the tariff rate.
  2. Set quantity and how much of the tariff is passed to buyers.
  3. See the duty, new price, and the percentage increase.

How Tariffs Raise Prices

A tariff is a tax on imported goods, paid by the importer and usually passed along to consumers. The math is simple: tariff = price × rate, and the new price = price × (1 + rate). A 25% tariff on a $500 product adds $125, pushing it to $625. In practice, importers may absorb part of the cost, which is why this calculator lets you set the share passed to buyers.

Tariffs ripple through supply chains, so the final consumer price can rise by more or less than the headline rate depending on margins, sourcing and competition. Use this to estimate the impact on anything you buy or sell. Estimate only.

Formula & Logic

Import duty is assessed on the customs value of goods, which for most US imports is the transaction value — the price actually paid — rather than the landed cost including freight. The applicable rate comes from the goods' HTS classification, a ten-digit code that determines everything and is frequently misapplied. Two further federal charges apply on top of duty: the merchandise processing fee, a percentage of value within a floor and ceiling, and the harbor maintenance fee on sea freight. Section 301 and similar additional tariffs stack on top of the base rate rather than replacing it.

Duty = Customs value × duty rateMPF = Customs value × 0.3464% (subject to statutory minimum and maximum)HMF = Customs value × 0.125% (sea freight only)Landed cost = Goods + freight + insurance + duty + fees + broker

where:

customs value
normally the transaction value, exclusive of international freight for US imports
HTS code
the classification that sets the rate — the single most consequential input
Section 301
additional tariffs that stack on the base rate

Assumptions: De minimis rules exempt low-value shipments, though the threshold has been subject to change. Country of origin, not country of shipment, determines eligibility for trade agreements and additional tariffs.

Step-by-Step Example: $45,000 of Goods at a 25% Rate

Build the full landed cost including both federal fees.

  • Customs value$45,000
  • Duty rate25%
  • Ocean freight$3,200
  • Broker fee$250
  1. Duty: $45,000 × 25% = $11,250.
  2. Merchandise processing fee: $45,000 × 0.3464% = $155.88.
  3. Harbor maintenance fee: $45,000 × 0.125% = $56.25.
  4. Total government charges: $11,250 + $155.88 + $56.25 = $11,462.13.
  5. Add freight and broker: $11,462.13 + $3,200 + $250 = $14,912.13.
  6. Landed cost: $45,000 + $14,912.13 = $59,912.13, a 33.1% uplift.

Result$11,462.13 of duty and fees — $59,912.13 landed

The duty rate dominates, which is why HTS classification is worth professional attention: a code carrying 3.7% instead of 25% would cut the charge to $1,665. Misclassification is assessed retroactively with penalties, so aggressive coding is a poor economy.

Tariff FAQ

The importing company pays the tariff to customs, then typically passes most of it to consumers through higher prices. So buyers usually bear much of the cost.
Multiply the item's value by the tariff rate. A 20% tariff on a $300 item is $60, making the landed price $360 before any markup.
Not always. Sellers may absorb some of it to stay competitive, or raise prices by more if demand is strong. The "share passed to buyer" setting lets you model this.

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✔ Written & reviewed by Dr Sam — 20+ yrs in management & research leadership📅 Last updated June 2026📚 Sources: IRS.gov, U.S. Bureau of Labor Statistics📑 How we build & check these⚖ Educational estimates only — not financial, tax or legal advice