Product classification
HS code for Rennet: 3507.10
Enzymes, rennet and concentrates thereof.
Classification of rennet under HS 3507.10
Rennet is classified under HS code 3507.10, which specifically covers enzymes and prepared enzymes not elsewhere specified or included, with a particular subheading for rennet and its concentrates. The classification is determined by the biochemical nature of the product; rennet is a complex of enzymes produced in the stomachs of ruminant mammals, primarily containing chymosin. In the Harmonized System, Chapter 35 encompasses albuminoidal substances, modified starches, glues, and enzymes. Because rennet acts as a catalyst in the cheesemaking process to coagulate milk, it fits the functional definition of an enzyme. The classification remains consistent whether the rennet is of animal origin, microbial origin (often referred to as microbial rennet), or vegetable origin, provided it is processed into a concentrated enzymatic preparation. The General Rules for the Interpretation (GRI) of the Harmonized System dictate that products are classified according to the terms of the headings and any relative section or chapter notes. Since heading 35.07 specifically names enzymes, and subheading 3507.10 specifically names rennet, this is the primary classification for the product in its concentrated form.
- Covers
- Natural calf rennet (liquid, powder, or paste)
- Bovine rennet concentrates
- Microbial rennet preparations (fungal proteases)
- Chymosin produced via fermentation (FPC)
- Vegetable-based rennet enzymes
- Rennet tablets for industrial cheesemaking
- Also under 3507.10
Chr. Hansen CHY-MAX, DSM Maxiren, Danisco Marzyme, Walco Rennet, Junket Rennet
Codes often confused with 3507.10
Common mistake. Rennet is frequently misclassified under HS code 2106.90, which covers food preparations not elsewhere specified. This usually occurs when the rennet is mixed with significant amounts of other ingredients like salt, flavorings, or preservatives that change its character from a pure enzyme to a food additive. Another common error is using HS code 0504.00 for dried calves' stomachs; while these are the source of rennet, the stomachs themselves are classified as animal products, whereas the extracted enzyme is classified under 3507.10. Additionally, pure chemical enzymes might be confused with Chapter 29 (Organic Chemicals), but Chapter 35 takes precedence for prepared enzymes.
Top exporters and importers of HS 350710 (the code used for rennet), 2025
In 2025, the largest exporter of HS 350710 (the code used for rennet) in UN Comtrade data was Denmark, with 56% of world exports; the largest importer in UN Comtrade data was Denmark, with 13% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 350710, not only rennet.
Top exporters 2025 · share of world exports
- 1 Denmark $100M 56% of world exports
- 2 Germany $18M 9.8% of world exports
- 3 Italy $11M 6.0% of world exports
World total: $180M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Denmark $21M 13% of world imports
- 2 Brazil $20M 12% of world imports
- 3 Italy $15M 9.3% of world imports
World total: $165M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for rennet
Brazil classifies rennet under NCM 3507.10.00: HS 3507.10 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about rennet
What is the HS code for Rennet?
The HS code for Rennet is 350710 (Enzymes; rennet and concentrates thereof). The primary HS code for rennet and its concentrates is 3507.10.
How do I classify Rennet for customs?
Rennet is classified under HS code 350710 — Enzymes; rennet and concentrates thereof. This is a 6-digit subheading level code.
Does microbial rennet use the same HS code as animal rennet?
Yes, most customs authorities classify microbial rennet under 3507.10 because it serves the same enzymatic function and is marketed as a rennet substitute, though some jurisdictions may look at 3507.90 if it is not specifically labeled as a rennet concentrate.
Which countries are the top exporters of rennet (HS 350710)?
In 2025, the top exporters of HS 350710 (the code used for rennet) in UN Comtrade data were Denmark ($100M, 56% of world exports), Germany ($18M) and Italy ($11M). World exports came to about $180M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of rennet (HS 350710)?
In 2025, the top importers of HS 350710 (the code used for rennet) in UN Comtrade data were Denmark ($21M, 13% of world imports), Brazil ($20M) and Italy ($15M). World imports came to about $165M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Rennet the same in all countries?
The base HS code 350710 for Rennet is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for rennet in Brazil?
In Brazil, rennet (HS 350710) is classified under NCM 3507.10.00.