Can I generate an e-way bill for an old invoice?

Only if the invoice or challan is dated within 180 days of the day you generate the e-way bill. This check has applied on the e-way bill portal since 1 January 2025 (GSTN advisory of 17 December 2024). On 26 October 2026, documents dated before 29 April 2026 are too old.

How long can an e-way bill be extended?

Extensions are capped at 360 days from the date the e-way bill was first generated. The GSTN advisory's own example: an e-way bill generated on 1 January 2025 can be extended only up to 25 December 2025.

When can I ask for an extension?

The portal allows an extension in the window from 8 hours before to 8 hours after the e-way bill expires, when the goods could not reach in time.

What if the invoice is older than 180 days but goods still have to move?

The portal will not accept that document date for a new e-way bill. Talk to the client's CA about the correct document for the movement before the goods leave; this sheet only flags the case, it does not decide it.

E-way bill 180-day document limit and 360-day extension cap: a check sheet for CA firms and their clients

Updated 26 Oct 2026 · Disclosure: the white-label calendar linked below is an Unadhi product (₹999/year). This guide is for information only, not professional advice.

What you get: a ready-to-copy Google Sheet layout that catches two e-way bill portal blocks before a client's truck is loaded. Tab 1 lists documents waiting to move (invoice, delivery challan, bill of supply) and flags any dated more than 180 days ago, so it can no longer get a new e-way bill. Tab 2 tracks long-running e-way bills (job work, exhibition goods, stuck consignments) and shows the last date each can still be extended under the 360-day cap. Tab 3 filters what needs action this week. You can use it without buying anything.

Short answer. Since 1 January 2025 the e-way bill portal only accepts a base document dated within 180 days of the day you generate the e-way bill, and an e-way bill can be extended only up to 360 days from when it was first generated (GSTN advisory, 17 December 2024). On 26 October 2026, an invoice dated before 29 April 2026 is already too old.

Tab 1: Documents waiting to move

Col	Header	What goes in / formula (row 2)
A	Client	Client name
B	GSTIN	Client GSTIN
C	Doc type	Tax invoice / Delivery challan / Bill of supply
D	Doc no.	As printed
E	Doc date	Date on the document
F	Planned move date	When the client wants to generate the e-way bill
G	Age on move date (days)	`=IF(OR(E2="",F2=""),"",F2-E2)`
H	Last day to generate	`=IF(E2="","",E2+180)`
I	Status	`=IF(G2="","",IF(G2>180,"BLOCKED: older than 180 days",IF(H2-TODAY()<=15,"HURRY: "&(H2-TODAY())&" days left","OK")))`
J	Action / who	Free text

The 15-day "HURRY" warning is our working rule, not a legal limit. Change it to suit the client.

Tab 2: Long-running e-way bills (360-day cap)

Col	Header	What goes in / formula (row 2)
A	Client	Client name
B	EWB no.	12-digit e-way bill number
C	First generated on	Original generation date (not the last extension)
D	Current valid until	From the latest e-way bill print
E	Extension cap date	`=IF(C2="","",C2+358)`
F	Days left to cap	`=IF(E2="","",E2-TODAY())`
G	Status	`=IF(E2="","",IF(F2<0,"CAP PASSED: no more extensions",IF(D2>=E2,"LAST EXTENSION",IF(F2<=30,"PLAN DELIVERY: "&F2&" days to cap","OK"))))`
H	Extension window opens	`=IF(D2="","",D2-TIME(8,0,0))` (8 hours before expiry; format as date-time)
I	Notes	Reason for delay, transporter, vehicle

Why 358 and not 360? The GSTN advisory's own example says an e-way bill generated on 1 January 2025 can be extended only up to 25 December 2025, which is 358 days later. We use that so the sheet never shows a later date than the portal's example. The 30-day warning is our working rule.

Tab 3: This week

Keep two small filters on this tab. Docs: =FILTER(Docs!A2:J,Docs!I2:I<>"OK",Docs!I2:I<>""). EWB: =FILTER(EWB!A2:I,EWB!G2:G<>"OK",EWB!G2:G<>""). Sort so BLOCKED and CAP PASSED rows come first.

What to do for each status

BLOCKED: the portal will not take that document date. Do not let the client move the goods on the old document; decide with the client's CA what the correct document for this movement is before the truck leaves.
HURRY: generate the e-way bill before the last day in column H, or move the goods earlier.
PLAN DELIVERY / LAST EXTENSION: the goods must reach before the cap date; after it the portal will not extend again.
CAP PASSED: no further extension is possible on that e-way bill. Take advice on the next step before the goods move again.

Made-up example (not a real client)

Client "Sample Steel Traders" has a delivery challan dated 20 April 2026 for goods sent for exhibition, to be brought back on 2 November 2026. Tab 1 shows age 196 days on the move date and "BLOCKED: older than 180 days", so the firm reviews the right document with the client a week early instead of at the gate. A second client, "Sample Pumps", has an e-way bill first generated on 10 November 2025 for a consignment stuck in transit. Tab 2 shows the cap date as 3 November 2026 and "PLAN DELIVERY: 8 days to cap", so the delivery is arranged this week.

WhatsApp message to a client

"Hello, a quick check before you send goods: the e-way bill portal will not accept an invoice or challan older than 180 days, and an e-way bill cannot be extended past about 360 days from when it was first made. Please send us the list of goods you plan to move in the next 30 days with document numbers and dates, and any e-way bills you have been extending, so we can flag problems before the truck leaves."

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Sources

This sheet is a working aid, not professional advice. Portal checks can change without a new notification; look at the e-way bill portal's latest advisories before you rely on this. Checked on 26 October 2026. Spot an error? Write to mininglife7@gmail.com.

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Unadhi Guides are free, independent explainers. We correct errors as soon as we find them: write to mininglife7@gmail.com.