Harmonized System
U.S. exports of Buttermilk, Kefir, Sour Cream & Other Fermented or Acidified Milk Products (HS 040390) totaled $6.6M in August 2026.
Importers of Buttermilk, Kefir, Sour Cream & Other Fermented or Acidified Milk Products paid $46K in duties in August 2026, an average duty rate of 11.91% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Buttermilk, Kefir, Sour Cream & Other Fermented or Acidified Milk Products imports of $391K in August 2026 ran 27% above the year-to-date monthly average of $307K.
Last updated: August 2026 dataFermented and acidified dairy products beyond yogurt — including buttermilk, kefir, sour cream, and cultured cream — are grouped here, with the US schedule making commercially important distinctions between fluid and dried sour cream, butterfat content bands, and airtight versus other packaging. Colombia leads US imports under this heading, followed by India and Canada, a supplier mix that spans both specialty cultured products and commodity fermented dairy ingredients. Dried sour cream lines (0403904500 and 0403905100) serve food-manufacturing applications, while fluid sour cream and fermented milk lines address retail and food-service channels. USDA FSIS admissibility review applies to all entries.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
37 import shipments a month
The schedule separates fluid sour cream from dried sour cream, and within each physical form further distinguishes by butterfat content — not over 45% butterfat versus over 45% — and by TRQ eligibility. Line 0403904500 covers dried sour cream with not over 6% butterfat; line 0403905100 covers dried sour cream at 6%–35% butterfat subject to US note 8 quantity limits. Importers must verify both the moisture state and butterfat percentage of their product before selecting the correct line.
Kefir is named in the heading description but is not broken out into a dedicated 10-digit line in the US schedule. Fluid kefir would generally fall under line 0403908500 (fermented milk except dried fermented milk) or 0403909500 (milk and cream, curdled, fermented, or acidified, NESOI), depending on its specific characteristics. Importers should confirm classification with a licensed customs broker, particularly for kefir products with added flavors or fruit.
ImportsExports
Imports
$391KYoY · free account
Exports
$6.6MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $3.6M of Buttermilk, Kefir, Sour Cream & Other Fermented or Acidified Milk Products and exported $95.2M.
Through August 2026. Source: U.S. Census Bureau.
Trade Directory
List your company under HS 040390 — Buttermilk, Kefir, Sour Cream & Other Fermented or Acidified Milk Products, so the companies trading it can find you. Be the first supplier listed.
Subheading 2 of 2 in heading 0403
Subheading 040390 · $6.6M of $16.3M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 0403909500 | Milk & Cream, Curdled, Fermented or Acidified, NESOI | $289K | 9.83% | 66.76% | $28K |
| 0403902000 | Buttermilk, Fluid | $58K | 10.41% | 100.00% | $6K |
| 0403909000 | Milk/Cream Curdl/Ferment/Acidif US Nt 10 C 4 NESOI | $23K | 30.00% | 100.00% | $7K |
| 0403908500 | Fermented Milk Except Dried Fermented Milk/Etc | $21K | 24.93% | 100.00% | $5K |
| 0403900400 | Sour Cream, Fluid, Nov 45% Butterfat, Add US Nte 5 | — | -- | -- | -- |
| 0403907800 | Sour Cream, Over 45% Butterfat, NESOI | — | -- | -- | -- |
| 0403906100 | Sour Cream, Dried, 35% - 45% Butterfat, U S Note 9 | — | -- | -- | -- |
| 0403901600 | Sour Cream, Fluid, Not Over 45% Butterfat, NESOI | — | -- | -- | -- |
| 0403904500 | Sour Cream, Dried, Nov 6% Buttrfat, NESOI | — | -- | -- | -- |
| 0403905100 | Sour Cream, Dried, 6%-35% Butterfat, U.S. Note 8 | — | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 0403900000 | Buttermilk/Kephir/Curdled Fermntd Acidfd Mlk & Crm | $6.6M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Exports · August 2026
destination
Mexico and Philippines together take 90% of it.
customs district
entry
rate provision · imports
24.6% enters free of duty; duty collected equals 11.91% of imports for consumption.