E-Way Bill Under GST: Rules, Generation, and What Happens Without One

An e-way bill is the electronic permission slip that has to travel with goods once a consignment crosses a set value, and it exists mainly so tax authorities can check what's actually moving on the road against what's been billed. For a business dispatching goods or the transporter carrying them, treating it as an afterthought is a genuinely expensive habit. A vehicle stopped without a valid e-way bill doesn't just get a warning; it can be detained on the spot along with everything inside it. The rules around when it's required, how long it lasts, and who's responsible for generating it are fairly mechanical once laid out clearly, which is exactly why most of the mistakes come from never having seen them laid out at all.

When You Actually Need One

An e-way bill becomes mandatory once the value of a consignment moving by a motorised vehicle crosses ₹50,000, whether that movement stays within one state or crosses state lines. That value includes the invoice value along with applicable tax, and where a single vehicle carries multiple consignments for different buyers, each invoice's value is what gets checked against the threshold, even though a consolidated e-way bill can bundle them for the transporter's convenience. States have some room to set their own conditions for movement that stays entirely within their borders, and a few have set a higher local threshold or added extra conditions, so it's worth checking the specific state rule rather than assuming ₹50,000 applies everywhere for intra-state trips. Responsibility for generating it sits with whoever causes the movement, usually the registered consignor or consignee, though the transporter has to generate it if neither party has, and even an unregistered person moving goods to a registered buyer can get pulled into the requirement.

What's In It, and How Long It Stays Valid

The form itself is split into two parts filled at different points. Part A carries the transaction details: GSTIN of the supplier and recipient, invoice or document number, value of goods, HSN code, and reason for transport. Part B carries the vehicle number and transporter details, and it's this part that actually activates the bill for movement; without it, the e-way bill exists on paper but isn't valid for the goods to travel. One narrow relaxation is worth knowing here: where goods move within the same state from the consignor's place of business to a transporter's premises for further transportation, and that distance is up to 50 kilometres, Part B doesn't need to be filled in immediately. That's a relaxation for the short first leg to a transporter's hub, not a general exemption from Part B for any short trip.

Generating One in Practice

1. Log in to the e-way bill portal with your GST-registered credentials, or use an API or bulk-upload connection if your billing software supports it
2. Enter Part A details: supplier and recipient GSTIN, document number and date, item-wise value, and HSN codes
3. If you already generate e-invoices, invoice data can auto-populate Part A directly, cutting out a layer of manual re-entry and the typo risk that comes with it
4. Choose the transport mode and fill in Part B: the vehicle number for road transport, or the relevant transport document details for rail, air, or ship
5. Generate the bill to receive a unique E-Way Bill Number, which the transporter should carry, physically or digitally, alongside the invoice
6. Update Part B again if the vehicle changes mid-route; transhipping goods to a different vehicle without updating the e-way bill is treated the same as travelling without one at all

What Moving Goods Without One Actually Costs

Getting caught without a valid e-way bill, or with one that has expired mid-journey, doesn't lead to a simple fine you pay and move on from. Under Section 129 of the CGST Act, the goods and the vehicle carrying them can be detained on the spot. Release generally requires paying a penalty pegged to the tax involved, a steep 200% of the applicable tax where the owner of the goods comes forward to claim them, and a materially higher amount tied to the value of the goods where nobody comes forward within the prescribed window. For exempted goods, the exposure is smaller but still real. On top of the immediate cost, a shipment sitting detained at a checkpost for days while paperwork gets sorted tends to cost more in missed deliveries and strained customer relationships than the penalty itself.

The e-way bill system rewards routine over vigilance. Businesses that build it into the same workflow as invoicing, rather than treating it as a separate task remembered only when a shipment looks large, rarely run into trouble with it. The ones who do get caught are usually not trying to evade anything; they've simply let a bill expire mid-route or missed updating Part B after a last-minute vehicle change, and paid a disproportionate price for what was really a paperwork lag.