Sourcing folic acid from China

Folic acid duty and classification

Heading 2936 covers vitamins, their derivatives used primarily as vitamins and vitamin intermixtures. Unmixed folic acid falls within other vitamins and their derivatives. The table repeats that commodity line for different purchasing grades; these are not separate tariff categories. Vitamin mixtures containing folic acid need classification against their full composition.

Read from the UK Trade Tariff on 20 October 2026, the relevant lines carry 0% duty for goods from China, with no listed anti-dumping or countervailing duty and no listed suspension. The unmixed line attaches export controls for dangerous chemicals and waste; the mixtures line attaches an export waste control. Ask your customs broker to confirm their relevance, particularly for returned or discarded material.

Finished supplement tablets and capsules are usually food preparations or medicines rather than bulk vitamin ingredients. Confirm the commodity code using the composition, additives and presentation. The vitamins guide covers the wider heading.

Specify the folic acid form and grade

Write the exact chemical identity into the purchase specification rather than accepting a description such as folate powder. State whether the material is unmixed folic acid or a vitamin mixture, identify any carrier or coating, and agree grade, assay basis, particle size and moisture specification.

For food supplements, confirm the applicable permitted vitamin forms and finished-product labelling requirements with the relevant authority. For vitamins added to animal feed, confirm any feed-additive authorisation requirements with the relevant authority. For pharmaceutical use, obtain the grade and manufacturing evidence described in the wider vitamins guide.

Request a certificate of analysis for the batch to be shipped, the test methods and stability evidence supporting the retest or expiry date. Agree sealed, light-proof packing and storage conditions before production.

Worked duty example

Illustrative example, not a quote: An illustrative business batch of unmixed food-grade folic acid under 2936 29 00 00, invoiced at £32,000 free on board, with £2,500 of freight and insurance to the UK. The customs value is £34,500. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £34,500, so it is £6,900. With no duty, the only import tax is the VAT, which a VAT-registered importer can usually reclaim. The import duty and VAT guide explains each step.

Inspection checklist

Identity and assay: compare an independently tested shipment sample with the agreed chemical identity, assay basis and batch certificate.

Contaminants: check the agreed heavy-metal, residual-solvent and microbiological results against the purchasing specification and intended grade.

Powder condition: inspect for caking, moisture ingress and differences from the approved sample; check particle size where blending performance matters.

Packing and traceability: match drum and liner labels to the batch certificate, check seals and weights, and record damaged packing during arrival inspection.

What goes wrong

A quotation for folic acid can conceal a diluted mixture, an unagreed carrier or a different folate form. Comparing assay figures without checking their basis can make unlike materials appear equivalent. A certificate for a different batch does not establish the quality of the shipment.

Moisture ingress and damaged liners can leave powder unsuitable for consistent handling or blending. Hold questionable stock pending investigation and testing. If you import finished supplements, you are legally responsible for their composition, safety and labelling.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For repeat volumes, see container programmes.