IESCO Guide Updated March 2026

How to Find IESCO Reference Number — Where is it on Your Bill?

Quick Answer: The IESCO reference number is a 14-digit number on the top-right of your bill labeled "Ref. No." — above the barcode. It contains only digits, no letters.

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Where Exactly is the IESCO Reference Number?

On every IESCO electricity bill, look at the top section of the page. On the right side, you will find a bold number labeled "Ref. No." or "Reference No." — this is your 14-digit reference number. It is always printed directly above or next to the barcode on the bill.

// IESCO Bill — Top Right Section

┌─────────────────────────────────┐

│ IESCO Electricity Bill │

│ Consumer: Muhammad Ali │

│ ┌──────────────────────────┐ │

│ │ Ref. No: 01234567890123 │ │ ← Here!

│ │ Customer ID: 1234567890 │ │

│ └──────────────────────────┘ │

│ [████████ BARCODE ████████] │

└─────────────────────────────────┘

What Does the IESCO Reference Number Look Like?

Can't Find Your IESCO Reference Number?

Check an old bill

Your reference number never changes. Any previous IESCO bill will have the same reference number.

Use your Customer ID instead

The 10-digit Customer ID also works on our IESCO bill checker. Click the 'Customer ID' tab.

Call IESCO helpline 118

Provide your name, address, and CNIC. The helpline can give you your reference number immediately.

Check JazzCash/EasyPaisa payment history

If you've paid your IESCO bill online before, your reference number is saved in the payment history.

Visit your nearest IESCO office

Bring your CNIC for identity verification and they will provide your reference number.

Found Your IESCO Reference Number?

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Frequently Asked Questions

Where is the reference number on IESCO bill?
The IESCO reference number is printed in bold on the top-right section of your bill, labeled 'Ref. No.' or 'Reference No.' — above the barcode. It is always 14 digits, no letters.
What is the IESCO reference number format?
The IESCO reference number is always 14 digits. No letters, no dashes. You need this number to check your bill online or pay through JazzCash, EasyPaisa, or any bank app.
How to check IESCO bill without reference number?
Use your 10-digit Customer ID instead — it also works on our checker. Or call IESCO helpline 118 with your CNIC to retrieve your reference number.
Is IESCO reference number same every month?
Yes. Your IESCO reference number stays the same every month. It only changes if WAPDA reassigns your meter. Your 10-digit Customer ID never changes at all.

After finding your IESCO reference number, check your IESCO bill on PakistanBill.online — Pakistan's only platform covering all 19 providers. Also check: LESCO | PESCO | SNGPL gas | WASA Rawalpindi water. See our Islamabad utility bills guide.