Official data Source: US Census Bureau international trade data Data through August 2026 · updated monthly

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Calcium

In short

  • The US imported $15.2M of this product over the 12 months to August 2026, down 4.2% on the year before.
  • China is the largest supplier, with 100.0% of US imports.
  • China is the cheapest main supplier before and after freight and duty, landing at $5.40/kg.
  • Duty paid averaged 39.2% of the value of imports in August 2026, down 18.8 points on a year earlier.
  • Mexico is gaining share: 3.5% over the last 12 months, up from 1.0%.
  • US exports were $5.9M over the last 12 months; the largest market is Canada, with 69.9%.

US imports, Aug 2026

$838K

↓ −18% vs Aug 2025

Last 12 months

$15.2M

↓ −4.2% vs the 12 months before

Average duty paid

39.2%

↓ −18.8 pts vs Aug 2025

Top supplier

China

100.0% of US imports

US imports by month

The last 13 months, so the same month a year ago is on the left. August 2026 is highlighted. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.

Aug2025SepOctNovDecJan2026FebMarAprMayJunJulAugDuty ↓
Show the numbers
MonthUS imports
August 2025$1.0M
September 2025$1.2M
October 2025$1.1M
November 2025$1.4M
December 2025$753K
January 2026$2.3M
February 2026$1.6M
March 2026$1.3M
April 2026$848K
May 2026$1.6M
June 2026$1.1M
July 2026$1.1M
August 2026$838K

What changed

  • US imports were $838K in August 2026, down 22% from July 2026 and down 18% from August 2025.
  • Over the 12 months to August 2026 they totalled $15.2M, down 4.2% on the 12 months before.
  • Biggest moves in market share since July 2026: China up from 90.9% to 100.0%, Mexico down from 8.9% to 0.0%.
  • Average price from China rose 7.5% since July 2026, to $3.91/kg.
  • Duty paid on imports from China rose from 36.0% to 39.2% of their value since July 2026.

US trade by year

US imports were $15.2M in the 12 months to Aug 2026, up 10% on the 12 months to Aug 2017. US exports were $5.9M, down 76%. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.

2017201820192020202120222023202420252026Duty ↑Duty ↓Duty ↑Duty ↑Duty ↑
Show the numbers
PeriodUS imports
12 months to Aug 2017$13.7M
12 months to Aug 2018$16.1M
12 months to Aug 2019$11.7M
12 months to Aug 2020$13.1M
12 months to Aug 2021$13.0M
12 months to Aug 2022$31.3M
12 months to Aug 2023$12.7M
12 months to Aug 2024$16.6M
12 months to Aug 2025$15.8M
12 months to Aug 2026$15.2M
  • China
  • Mexico
  • Japan
  • All countries
Share of US imports
Show the numbers
PeriodChinaMexicoJapan
12 months to Aug 201764.9%0.0%0.0%
12 months to Aug 201873.7%0.0%0.9%
12 months to Aug 201961.8%0.0%1.0%
12 months to Aug 202048.6%0.6%0.3%
12 months to Aug 202140.2%0.0%0.0%
12 months to Aug 202281.6%0.0%0.2%
12 months to Aug 202399.0%0.0%0.2%
12 months to Aug 202499.2%0.1%0.5%
12 months to Aug 202598.5%1.0%0.2%
12 months to Aug 202696.4%3.5%0.1%
Duty paid, % of value
Show the numbers
PeriodChinaMexicoJapanAll countries
12 months to Aug 20173.0%0.0%3.0%3.0%
12 months to Aug 20183.0%n/a3.0%3.0%
12 months to Aug 201915.6%n/a3.0%10.8%
12 months to Aug 202027.9%2.2%3.0%15.1%
12 months to Aug 202128.0%0.0%3.0%13.0%
12 months to Aug 202214.6%n/a3.0%12.8%
12 months to Aug 202327.2%n/a3.0%26.9%
12 months to Aug 202428.0%0.0%3.0%27.8%
12 months to Aug 202539.3%0.0%9.9%38.7%
12 months to Aug 202644.4%0.0%13.7%42.8%
PeriodUS importsDuty paidUS exports
12 months to Aug 2026$15.2M−4.2%42.8%+4.1 pts$5.9M−50%
12 months to Aug 2025$15.8M−4.7%38.7%+10.9 pts$11.8M−30%
12 months to Aug 2024$16.6M+31%27.8%+0.9 pts$16.8M+2.2%
12 months to Aug 2023$12.7M−59%26.9%+14.1 pts$16.4M+2.4%
12 months to Aug 2022$31.3M+141%12.8%−0.2 pts$16.0M+149%
12 months to Aug 2021$13.0M−0.7%13.0%−2.1 pts$6.5M−17%
12 months to Aug 2020$13.1M+12%15.1%+4.3 pts$7.8M−73%
12 months to Aug 2019$11.7M−27%10.8%+7.8 pts$28.7M−24%
12 months to Aug 2018$16.1M+17%3.0%0.0 pts$37.9M+51%
12 months to Aug 2017$13.7M3.0%$25.1M

Who supplies the US

August 2026. Small figures under each value are the change from August 2025. Landed cost by origin, below, adds freight and duty to the price.

CountryUS importsShareAverage priceDuty paidLast 13 months
China$838K100.0%0.0 pts$3.91/kg+17%39.2%−18.8 pts
All countries$838K100.0%$3.91/kg+17%39.2%−18.8 pts

The 3 largest suppliers had 100.0% of US imports over the last 12 months.

Landed cost by origin

What importers paid to land this product at a US port from each main supplier, June–August 2026: the price, freight and insurance to the first US port, and duty, per unit. Suppliers with 3% or more of these imports, cheapest landed first. Small figures under landed cost are the change from the same months a year earlier.

  • Price
  • Freight and insurance
  • Duty
CountryPriceFreight and insuranceDutyLanded costMake-up
China$3.71/kg$0.29/kg7.8% of price$1.40/kg37.6% of price$5.40/kg+2.2%
Mexico$7.83/kg$0.12/kg1.5% of price$0.00/kg0.0% of price$7.95/kg+11%
All countries$3.84/kg$0.28/kg7.4% of price$1.35/kg35.2% of price$5.48/kg+3.2%

Landed at a US port, China was cheapest, at $5.40/kg: 32.1% below Mexico.

Landed cost from Mexico rose 11% on a year earlier, to $7.95/kg, mostly on price: $7.10/kg then, $7.83/kg now.

How the market is shifting

Mexico gained the most share: 3.5% of US imports over the last 12 months, up from 1.0% in the 12 months before. China lost the most: 96.4%, down from 98.5%. The charts show September 2024 to August 2026 for the 3 largest suppliers over the last 12 months. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.

  • China
  • Mexico
  • Japan
  • All countries
Share of US imports
Show the numbers
MonthChinaMexicoJapan
September 202497.2%0.0%0.0%
October 202499.8%0.0%0.2%
November 2024100.0%0.0%0.0%
December 2024100.0%0.0%0.0%
January 202598.8%0.0%0.1%
February 2025100.0%0.0%0.0%
March 202599.7%0.0%0.0%
April 202599.8%0.0%0.2%
May 2025100.0%0.0%0.0%
June 202595.5%4.3%0.2%
July 202590.6%8.1%1.3%
August 2025100.0%0.0%0.0%
September 202596.1%3.9%0.0%
October 202599.8%0.0%0.2%
November 202593.0%6.9%0.2%
December 2025100.0%0.0%0.0%
January 2026100.0%0.0%0.0%
February 202697.0%3.0%0.0%
March 202692.1%7.3%0.6%
April 2026100.0%0.0%0.0%
May 202697.0%3.0%0.0%
June 202691.1%8.9%0.0%
July 202690.9%8.9%0.2%
August 2026100.0%0.0%0.0%
Duty paid, % of value
Show the numbers
MonthChinaMexicoJapanAll countries
September 202428.0%n/an/a27.3%
October 202427.0%n/a3.0%27.0%
November 202428.0%n/an/a28.0%
December 202428.0%n/an/a28.0%
January 202528.0%n/a3.0%27.7%
February 202528.7%n/an/a28.7%
March 202539.7%n/an/a39.7%
April 202548.0%n/a0.0%47.9%
May 202552.1%n/an/a52.1%
June 202557.1%0.0%13.0%54.6%
July 202558.0%0.0%13.0%52.7%
August 202558.0%n/an/a58.0%
September 202558.0%0.0%n/a55.7%
October 202558.0%n/a15.0%57.9%
November 202550.7%0.0%15.0%47.2%
December 202548.0%n/an/a48.0%
January 202648.0%n/an/a48.0%
February 202639.2%0.0%n/a38.0%
March 202638.0%0.0%13.0%35.1%
April 202638.0%n/an/a38.0%
May 202638.0%0.0%n/a36.9%
June 202638.0%0.0%n/a34.6%
July 202636.0%0.0%13.0%32.7%
August 202639.2%n/an/a39.2%

Tariff actions touching this product

When the duty paid on this product changed and stayed changed, for its main suppliers and all countries, newest first, with the Federal Register notices that named the product in the 3 months before. Rates are medians of the 4 months either side, less any usual seasonal swing. A change shows what happened to duty paid, not why; read each notice for what it did.

  1. January 2026 · Duty paid: China 54.4% → 38.6%, all countries 51.6% → 38.0%.
  2. April 2025 · Duty paid: China 28.3% → 54.6%, all countries 28.3% → 52.4%.
  3. May 2022 · Duty paid: China 8.9% → 20.3%, Russia 3.0% → 25.0%, all countries 5.3% → 20.4%.
  4. November–December 2021 · Duty paid: China 25.7% → 9.4%, all countries 16.9% → 5.3%.
  5. July 2021 · Duty paid: all countries 11.9% → 17.3%.
  6. September 2020 · Duty paid: all countries 16.1% → 9.7%.
  7. June–July 2019 · Duty paid: China 13.0% → 28.0%, all countries 9.9% → 15.7%.
  8. October–November 2018 · Duty paid: China 3.0% → 12.6%, all countries 3.7% → 11.3%.

Where it enters the US

Main ports of entry over the 12 months to August 2026: US imports and share.

  1. Newark, NJ$6.2M · 40.6%
  2. Baltimore, MD$5.5M · 36.5%
  3. Norfolk-Newport News, VA$2.2M · 14.5%
  4. Laredo, TX$527K · 3.5%
  5. Los Angeles, CA$358K · 2.4%

Where US exports go

US exports were $308K in August 2026, down 68% from August 2025, and $5.9M over the last 12 months, down 50% on the 12 months before.

MarketLast 12 monthsSharevs 12 months before
Canada$4.1M69.9%−53%
China$628K10.6%−64%
Egypt$573K9.7%new
Japan$132K2.2%+592%
Germany$94K1.6%+412%
Korea, South$75K1.3%−54%
Mexico$74K1.2%−66%
South Africa$30K0.5%+500%
Other countries (16)$176K3.0%−76%
All countries$5.9M100.0%−50%

Markets abroad

Each country's own import figures for this product, from UN Comtrade: the 8 biggest importers outside the US in the latest year each has reported, what they bought from the US, and the change from the year before. Values usually include freight and insurance to the importer's border, so they run a little above US export figures. Countries report a year or more late; 100 have reported 2025 so far. Where a country's figure for imports from the US is under half or over double what the US recorded exporting there that year, the US figure is shown under it.

MarketImportsvs year beforeFrom the USUS share
India$27.2Min 2025+0.8%$2110.0%
Poland$12.6Min 2025−20%$2510.0%
Turkey$11.3Min 2025−2.9%$7250.0%
Canada$8.4Min 2025−49%$1.6MUS records $6.1M18.8%
France$5.9Min 2025−50%$5K0.1%
Spain$5.4Min 2025+28%$6290.0%
Burma$4.8Min 2025−47%$00.0%
Egypt$4.5Min 2025−39%$00.0%

The biggest market outside the US is India, which imported $27.2M of this product in 2025, under 0.1% of it from the US.

Of these, imports into Spain grew fastest: up 28% from 2024 to 2025.

Other products under heading 2805: alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury. US trade over the 12 months to August 2026.

About these figures
  • Source: US Census Bureau international trade data, not seasonally adjusted, in US dollars. Retrieved November 3, 2026.
  • US imports are general imports at customs value, which excludes freight and insurance. Exports are at free-alongside-ship value.
  • Average price is customs value divided by quantity (kilograms), across all of the product's 10-digit lines.
  • Duty paid is the duty Census calculates on each country's imports for consumption, as a share of their value. It moves with tariff changes, exemptions and the mix of goods within the product.
  • Landed cost adds Census's import charges (freight, insurance and other costs of bringing the goods to the first US port) and calculated duty to the customs value, per unit, across the product's 10-digit lines. It leaves out antidumping and countervailing duties, customs fees and transport inland. Prices are averages across the goods within the code, so a lower one can mean cheaper goods, not the same goods for less.
  • Markets abroad are each country's imports as it reports them to UN Comtrade, in US dollars, usually including freight and insurance. Countries report a year or more late and in their own edition of the HS codes, so one still on an older edition is missing for codes that changed in 2022.
  • Census revises recent months, so figures can change slightly. These are estimates for research and planning, not customs or legal advice.

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