HSN code 73089040 is the 8-digit tariff item for structures (excluding prefabricated buildings of heading 9406) and parts of structures (for example, bridges and bridge-sections, lock-gates, towers, lattice masts, roofs, roofing frame-works, doors and windows and their frames and thresholds for doors, shutters, balustrades, pillars and columns), of iron or steel, plates, rods, angles, shapes, sections, tubes and the like, prepared for use in structures, of iron or steel, other, galvanised tension bars, under heading 7308 and sub-heading 730890 (Chapter 73). GST is 18%: 9% CGST + 9% SGST within a state, or 18% IGST to another state. Rates as of 2026-10-21.
HSN 73089040 at a glance
| Tariff item (8 digits) | 73089040 |
|---|---|
| Heading (4 digits) | 7308: Structures (excluding prefabricated buildings of heading 9406) and parts of structures (for example, bridges and bridge-sections, lock-gates, towers, lattice masts, roofs, roofing frame-works, doors and windows and their frames and thresholds for doors, shutters, balustrades, pillars and columns), of iron or steel, plates, rods, angles, shapes, sections, tubes and the like, prepared for use in structures, of iron or steel |
| Sub-heading (6 digits) | 730890: Other |
| Chapter | 73: Articles of iron or steel |
| Description | Structures (excluding prefabricated buildings of heading 9406) and parts of structures (for example, bridges and bridge-sections, lock-gates, towers, lattice masts, roofs, roofing frame-works, doors and windows and their frames and thresholds for doors, shutters, balustrades, pillars and columns), of iron or steel, plates, rods, angles, shapes, sections, tubes and the like, prepared for use in structures, of iron or steel, other, galvanised tension bars |
| GST rate | 18% |
| Within the state | 9% CGST + 9% SGST (or UTGST) |
| To another state | 18% IGST |
9/2025-CT(R), Schedule II, S. No. 286 (HSN 7308) covers "Structures (excluding prefabricated buildings of heading 94.06) and parts of structures (for example, bridges and bridge-sections, lock-gates, towers..." at 18%. Goods of this code outside that wording fall under the 18% residual entry, so the rate is 18% either way.
The rate entry for this code
The description is the notification's own wording. An entry applies only when the goods match it.
| HSN scope | Description of goods | GST | CGST + SGST | Entry |
|---|---|---|---|---|
| 7308 | Structures (excluding prefabricated buildings of heading 94.06) and parts of structures (for example, bridges and bridge-sections, lock-gates, towers, lattice masts, roofs, roofing frame-works, doors and windows and their frames and thresholds for doors, and shutters, balustrades, pillars, and columns), of iron or steel; plates, rods, angles, shapes, section, tubes and the like, prepared for using structures, of iron or steel [other than transmission towers] | 18% | 9% + 9% | 9/2025-CT(R), Schedule II, S. No. 286 |
| Any | Goods which are not specified in Schedule I, III, IV, V, VI or VII (residual entry, for goods of 73089040 that match none of the descriptions above) | 18% | 9% + 9% | 9/2025-CT(R), Schedule II, S. No. 639 |
Worked example: a ₹1,000 sale under HSN 73089040
Taxable value ₹1,000.00. Within your state: CGST ₹90.00 + SGST ₹90.00 = ₹180.00, invoice total ₹1,180.00. To a buyer in another state: IGST ₹180.00, the same total.
For other amounts, or to work back from a tax-inclusive price, use the GST calculator.
How many HSN digits to print on the invoice
Notification 78/2020-Central Tax sets the minimum by aggregate turnover in the previous financial year: up to ₹5 crore, at least 4 digits (7308) on tax invoices to registered buyers (optional on B2C invoices); above ₹5 crore, at least 6 digits (730890) on all tax invoices. Exports and imports are declared on the shipping bill or bill of entry under the full 8-digit tariff item (73089040), so most exporters print 8 digits on their GST invoices too.
The HSN-wise summary in GSTR-1 uses the same code, so set it once on the item in your billing software. FundRaksha Book stores the HSN and GST rate on each item, splits CGST, SGST and IGST on every bill, and keeps stock and party ledgers alongside.
Other tariff items under sub-heading 730890
- HSN 73089010: Beams, channels, pillars and girders prepared for use in structures (18%)
- HSN 73089020: Drop rods (structures and parts of structures, of iron or steel, plates, rods, angles, shapes, sections... (18%)
- HSN 73089030: Hatchway, rails and bulkheads for ships or boats and parts of hull (18%)
- HSN 73089050: Structures and super structures for mining (18%)
- HSN 73089060: Truss rods (structures and parts of structures, of iron or steel, plates, rods, angles, shapes, sections... (18%)
- HSN 73089070: Tubular steel poles for electric transmission and distribution lines (18%)
See every rate entry for the heading on the HSN 7308 page, or all Chapter 73 headings.
Sources
Codes and descriptions: GSTN HSN master (HSN_SAC.xlsx, sheet HSN_MSTR), GST portal, file dated 13.10.2026, read on 21.10.2026; descriptions were converted from capitals and joined with their heading and sub-heading text. Rates: Rates from Notification 9/2025-Central Tax (Rate), 17.09.2025, as amended by Notification 19/2025-Central Tax (Rate) (from 01.02.2026) and Notification 01/2026-Central Tax (Rate) (from 01.05.2026); nil-rated goods from Notification 10/2025-Central Tax (Rate); bricks from Notification 14/2025-Central Tax (Rate).