GST Rate on TMT Steel Bars: 18%

HSN 721420 · 9% CGST + 9% SGST intra-state, or 18% IGST interstate.

TMT and other reinforcement bars attract 18% GST under sub-heading 721420. Steel is construction's second-largest input after cement, and its lower slab (18% vs cement's 28%) is why material-mix decisions show up in project tax planning.

Worked example at 18%

Taxable value: ₹10,000
CGST (9%): ₹900.00
SGST (9%): ₹900.00
Invoice total: ₹11,800.00

Interstate, the same sale shows a single IGST line of ₹1,800.00. Try your own numbers in the GST calculator.

Classification

TMT Steel Bars is classified under HSN 721420 — see the full classification page for the official description, parent and related codes, and digit-length rules. Rates follow GST Council notifications and can change; the rate shown here is the one typically associated with this classification.

Also at 18% GST

Accounting & Bookkeeping SAC 998222 Advertising Services SAC 998361 Biscuits HSN 190531 Ceramic & Vitrified Tiles HSN 690721 Chocolate HSN 1806 Commercial Rent SAC 997212 Cosmetics HSN 330499 Courier Services SAC 996811

Frequently asked questions

Ferrous scrap is also 18%, but note the special provisions: certain metal-scrap purchases from unregistered sellers attract reverse charge, and TDS provisions apply to scrap transactions above thresholds.

For a sale within one state, the 18% splits equally into 9% CGST and 9% SGST. For an interstate sale it is charged as a single 18% IGST — the total tax is the same either way.

HSN code 721420. The code appears on every invoice line and flows into the GSTR-1 summary and e-way bills.

Related tools & guides

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