Job Work Under GST

Job work is a backbone of Indian manufacturing — from garment exports to auto components, principal manufacturers routinely send raw materials and semi-finished goods to specialised processors. Under GST, Sections 19 and 143 of the CGST Act, along with Rule 45 and Form GST ITC-04, create a robust framework that protects input tax credit while monitoring movement of goods. Here is the 2026 playbook for principal manufacturers and job workers.

Definitions to lock down

• Job worker — a person who undertakes any treatment or process on goods belonging to another registered person (the principal).
• Principal — the registered person who sends inputs/capital goods to the job worker.
• Job work treatment includes processing, fabrication, assembly, painting, packing, testing, machining, etc. — virtually any value addition.

Movement of goods without payment of tax

Under Section 143, the principal can send inputs and capital goods to a job worker without payment of tax, subject to time limits: inputs must return within one year and capital goods (other than moulds, dies, jigs, fixtures, or tools) within three years from the date of dispatch. If they don't return within this period, it is deemed to be a supply by the principal on the original date of dispatch, attracting GST plus interest under Section 50.

Documentation — the delivery challan

1. Goods are moved on a delivery challan in triplicate (original to the consignee, duplicate to the transporter, triplicate retained by the consignor).
2. Challan must contain serial number, date, principal's and job worker's GSTINs, HSN, description, quantity, taxable value, and place of supply.
3. An e-way bill is required where value exceeds ₹50,000 (lower in some States); the challan number flows into the EWB.
4. When goods return from job worker, the same challan or a fresh challan from the job worker is used.

Input tax credit and Section 19

Section 19 allows the principal to take ITC on inputs sent to the job worker even though physical possession is with the job worker — subject to the input being received back within one year, or capital goods within three years. ITC is allowed even when inputs are sent directly from the supplier's place to the job worker, provided they ultimately return to the principal within the prescribed time.

Form GST ITC-04 — quarterly/half-yearly statement

• Form ITC-04 captures details of inputs and capital goods sent to and received back from job workers.
• Filing frequency: half-yearly for taxpayers with aggregate turnover up to ₹5 crore (by 25 October and 25 April), and yearly for those above ₹5 crore (by 25 April).
• Both new movements and pending balances at job workers' premises must be reported.
• Late or non-filing increases audit exposure and risk of ITC reversal.

Supply of goods from job worker's premises

With prior intimation, the principal can supply goods directly from the job worker's premises to customers, including for exports. If the job worker is registered, supply can be made from his premises without intimation. If the job worker is unregistered, the principal must declare the job worker's premises as an 'additional place of business' in his GST registration before such supplies.

GST rate on job work services

Job work services attract GST at 5%, 12%, or 18% depending on the nature of work — for example, job work on textile and textile products at 5%, manufacturing services on physical inputs owned by others at 12% (the general residual rate), and certain specified services at 18%. The job worker raises a tax invoice on the principal for the job-work charges, separately from the value of returning inputs.

Special situations in job work to manage

Some practical situations need close handling. First, job worker uses his own consumables — these add to the job-work value, and his invoice should clearly state the same. Second, by-products and waste at the job worker's premises — these can be returned, supplied to the principal's customer with intimation, or sold from job worker's premises if commercial value justifies; in all cases, GST treatment must be planned. Third, multi-stage job work — input goes from principal to JW1 to JW2 back to principal — each leg needs a delivery challan and tight tracking under ITC-04. Fourth, job work for an unregistered principal — the registered job worker raises a regular tax invoice and treats it like any other service. Fifth, job work for exports — the exporter can supply finished goods directly from the job worker's premises with prior intimation and zero-rate the supply under LUT. Each of these scenarios has its documentation rhythm; embedding them in your ERP master saves months of reconciliation pain later.

Conclusion

Job work under GST in 2026 is a well-defined, compliance-friendly framework — provided you respect the time limits, file ITC-04 on time, and document every movement on a delivery challan. Map your job-work network, automate ITC-04 inputs, and reconcile pending stocks every quarter. That discipline turns job work from a risk area into a competitive advantage.