US Tariff Calculator

Getting an estimate takes five quick steps. The calculator adds each charge on top of your customs value, so you can see exactly where every dollar comes from.

1. Type the customs value of your shipment in dollars. This is the price you paid for the goods.
2. Type the base duty rate for your HTS code. If you do not know it, look the code up at hts.usitc.gov first.
3. Type any additional tariff rate that applies, such as Section 301 or Section 232. Enter 0 if none apply.
4. Pick how the goods arrive, then add freight and insurance if you want the full landed cost.
5. Press Calculate, or press Enter. The total duties and fees appear first and large, with the landed cost and the step-by-step math below. Press Reset to clear the form and start over.

Four charges stack on top of your customs value. Duty is the customs value times the base duty rate. Additional tariff is the customs value times the extra rate you enter. The Merchandise Processing Fee, or MPF, is 0.3464% of the customs value, with a minimum of $34.58 and a maximum of $670.86 per formal entry for fiscal year 2027. The Harbor Maintenance Fee, or HMF, is 0.125% of the customs value and applies only to ocean cargo.

Total duties and fees = Base duty + Additional tariff + MPF + HMF. Landed cost = Customs value + Total duties and fees + Freight + Insurance. Customs value is the price paid for the goods. It does not include freight or insurance, so duty and the two fees are all worked out on the goods value alone. Our percentage calculator can help you check any of the rate math by hand.

The MPF rate of 0.3464% has stayed the same for years. Only its floor and ceiling change, and CBP adjusts them each fiscal year for inflation. For entries from October 1, 2026 the floor is $34.58 and the ceiling is $670.86.

You import goods worth $10,000. Your HTS code carries a 2.5% base duty rate, and a 10% additional tariff applies. The goods arrive by ocean, freight costs $500 and insurance costs $100. Here is exactly what the calculator does.

1. Base duty = 2.5% of $10,000.00 = $250.00.
2. Additional tariff = 10% of $10,000.00 = $1,000.00.
3. MPF = 0.3464% of $10,000.00 = $34.64, which sits between the $34.58 floor and the $670.86 ceiling, so it stays at $34.64.
4. HMF = 0.125% of $10,000.00 = $12.50, because the goods arrive by ocean.
5. Total duties and fees = $250.00 + $1,000.00 + $34.64 + $12.50 = $1,297.14.
6. Landed cost = $10,000.00 + $1,297.14 + $500.00 + $100.00 = $11,897.14.

The effective rate is $1,297.14 divided by $10,000.00, which is 12.97%. That is the number to compare when you weigh one supplier or country against another.

The MPF floor and ceiling change the answer most on very small and very large shipments. On a $1,000 shipment the raw MPF is only $3.46, but the $34.58 floor lifts it to $34.58. On a $60,000 shipment the MPF is $207.84, which sits between the limits and is charged in full. On a $250,000 shipment the raw MPF is $866.00, but the $670.86 ceiling caps it at $670.86.

The HMF has no floor and no ceiling, so on a high value ocean shipment it can pass the MPF. A $2,000,000 ocean container pays $670.86 in capped MPF and $2,500.00 in HMF. Small importers feel the floor, and large importers feel the cap, so both ends of the range are worth checking before you quote a landed cost.

This calculator covers the standard duty stack and the two CBP fees. It does not cover antidumping and countervailing duties, quotas, excise taxes, broker fees, or product specific exclusions. Those charges depend on the exact product and the exact entry, and no general calculator can price them.

The base duty rate and the additional tariff rate are yours to enter, because rates differ by HTS code and by country of origin, and they change when new proclamations take effect. Confirm the rate for your line at hts.usitc.gov and confirm the full stack with a licensed customs broker before you file an entry. A wrong HTS code is the most common reason an estimate misses the real duty.

Informal entries of $2,500 or less use a different small fee instead of the MPF, so this calculator fits formal entries best. If your shipment is under $2,500, treat the MPF line as a planning figure and ask your broker what fee applies.

Charging duty on freight is the most common mistake. Duty, MPF and HMF are all worked out on the customs value, which excludes freight and insurance. Adding freight to the value before you apply the rate overstates the duty.

Forgetting the MPF floor is next. A small shipment still pays at least $34.58 in MPF, which can be a large share of the total on a low value entry. Forgetting the HMF on ocean cargo is the mirror image. Air freight skips it, ocean freight does not, so the arrival method changes the answer.

The last mistake is blending the rates into one percentage and losing the detail. A single 12.97% looks tidy, but it hides which layer you can actually change. Moving production to another country changes the additional tariff layer, while the base duty and the fees stay. Keep the layers separate and the sourcing decision gets much clearer. Check the final price with our sales tax calculator if you resell the goods in the United States.

This calculator gives an estimate for planning and is for informational purposes only, not customs or financial advice. Actual duty depends on your HTS classification, country of origin, entry date and the measures in force. Confirm rates with a licensed customs broker before filing. See our disclaimer.