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HTS 2518Dolomite, whether or not calcined or sintered, including dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape

Product or HTS code

Rate lines2

Code	Description	General	Special	Column 2	Units	Calculate
2518.10.00.00	2518.10.00.00Dolomite, not calcined or sinteredGeneral Free · Column 2 Free · t	Free		Free	t
2518.20.00.00	2518.20.00.00Calcined or sintered dolomiteGeneral 3% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 30% · t	3%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	30%	t

2026 HTS Revision 21 (October 9, 2026)

Duty by country of origin

Rate line	Canada78.13% of imports	Italy14.38% of imports	Mexico2.32% of imports	Brazil1.54% of imports	Spain1.33% of imports	Germany1.31% of imports	Vietnam0.67% of imports	China0.2% of imports	United Kingdom0.04% of imports	Sweden0.04% of imports
2518.10.00.00Dolomite, not calcined or sintered	10%9903.05.29	10%9903.05.39	10%9903.05.55	37.5%9903.05.019903.05.27	10%9903.05.39	10%9903.05.39	12.5%9903.05.84	37.5%9903.05.319903.88.03	10%9903.05.81	10%9903.05.39
2518.20.00.00Calcined or sintered dolomite	13%9903.05.29	10%9903.05.39	13%9903.05.55	40.5%9903.05.019903.05.27	10%9903.05.39	10%9903.05.39	15.5%9903.05.84	40.5%9903.05.319903.88.03	13%9903.05.81	10%9903.05.39

Total duty on a $10,000 ocean shipment entered 2026-10-13, before customs fees. Origins are the leading sources of US imports under this heading in 2025 (US Census Bureau).