Full HTS coverage
All 96 data-bearing chapters (of 97 numbered; Ch.77 reserved-empty) of the US Harmonized Tariff Schedule, searchable by code and browsable by heading.
Know the duty before you ship.
Instant US tariff estimates by HTS code — free, no sign-up, powered by the official Harmonized Tariff Schedule. Others ask for an API key before you see a number. We just show the number.
23,193 HTS lines · 96 of 97 chapters · rebuilt 2026-10-09 · from the official USITC schedule · every dataset source-stamped & time-stamped
Built for exporters
Everything you need to price landed costs with confidence.
Instant estimates
Ad valorem, specific and compound rates calculated against your shipment value in one click.
Origin-aware results
General rates plus preference and trade-remedy context for every major sourcing origin.
Data reports
Original research computed from our own tariff datasets.
One in Three Lines Is Free
Rate distribution, chapter extremes and Column-2 penalty geometry across the full US schedule.
The +25% Wall
What 637 Chapter-99 provisions reveal about US additional tariffs: rate tiers, country concentration and the +50% ceiling club.
Price your next shipment with real numbers.
Free, instant, and backed by the official USHTS — no API key required.
Open the Duty Calculator Need monitoring & bulk export? See pricingLine-level datasets: Data sources & methodology — including the Canada Section 338 tariff list (664 HTS lines at +50%).
At a glance
- 23,193 HTS lines · 8,504 duty-free (36.7%) — USITC export October 9, 2026
- 637 Chapter 99 trade-remedy provisions tracked — rebuild October 10, 2026
- Section 301 List 3 at 25% since May 10, 2019; List 4A at 7.5% since February 14, 2020
What is an HS code?
An HS (Harmonized System) code is a standardized 6-to-10-digit number that classifies a traded product; US duties are set per 10-digit HTS line. ExportSonar republishes all 23,193 HTS lines from the official USITC schedule (export of October 9, 2026), including the 8,504 lines — about 36.7% — currently duty-free.
How much is US import duty right now?
It depends on the 10-digit HTS line, not the product name. Of the 23,193 HTS lines in the October 9, 2026 USITC export, 8,504 are Free under Column 1; the rest range up to double-digit percentages, and 637 Chapter 99 provisions can stack extra duties on top. Look up your exact line free on ExportSonar.
Do Section 301 China tariffs still apply in 2026?
Yes. Section 301 duties have no statutory expiration: List 3 entered at 10% on September 24, 2018, rose to 25% on May 10, 2019, and List 4A fell from 15% to 7.5% on February 14, 2020. USTR's four-year review raised strategic-sector rates further starting September 27, 2024.
Where do ExportSonar's tariff numbers come from?
Directly from primary government sources: the USITC Harmonized Tariff Schedule REST export (rebuilt October 9, 2026), CBP CROSS rulings for classification, and USTR Federal Register notices for trade-remedy actions. Every dataset keeps its source URL and generation timestamp, so figures stay auditable rather than hand-copied.
Is ExportSonar free to use?
The lookup tools are free: browse every HTS chapter, search 23,193 tariff lines and estimate total duty without paying. Paid tiers add watchlists, monitoring alerts and bulk export for teams that track many codes. See the pricing page for current plan limits and supported billing currencies.
How accurate are the calculator's duty estimates?
The calculator applies the official Column 1 general rate — ad valorem percentage plus any specific per-unit component — exactly as published, then stacks matching Chapter 99 provisions such as the 25% Section 232 steel measure. It matches the printed HTS rate for the stated entry date; the final legal assessment always rests with CBP.
Primary sources: USITC Harmonized Tariff Schedule · CBP CROSS classification rulings · WCO — Harmonized System overview