Use the post-paid billing-address rule
IGST Act section 12(11)(b) places post-paid mobile and internet telecommunication services at the recipient’s billing address on the supplier’s records. A company moving staff, changing an internal cost centre or paying from a different bank account does not by itself prove that the relevant supplier billing record changed. This article concerns that specific domestic post-paid account-control problem, rather than the wider cloud/software or cross-border place-of-supply analysis.
Read the applicable text: CBIC IGST Act section 12(11)(b).
Confirm the service and domestic scope
Identify the actual telecom supply and establish that supplier and recipient are located in India for section 12. Fixed lines, leased circuits, prepaid connections and other telecom cases have separate branches within subsection (11). Do not apply the post-paid rule to them solely because the invoice contains data or internet terminology.
Reconcile the supplier record to the relocation
Retain the old and new office details, account and connection IDs, change request, supplier acknowledgement, effective record and invoices. The relevant inquiry is the actual billing address on the supplier’s records for the supply. A later master correction does not automatically establish that all earlier invoices had the same address; investigate actual facts and the applicable correction treatment.
Separate the legal recipient from users and allocations
A corporate account can serve employees in several places. Staff presence, roaming and internal departmental allocations should not silently replace the statutory billing-address test. Confirm that the recipient and relevant account are genuinely the company identified, rather than an employee’s personal connection or a different group entity. An available GSTIN should not be inserted without that support.
Determine tax head and credit independently
Compare the concluded place of supply with the actual supplier location under sections 7/8 and check exceptions. Then review the actual rate, exemption and recipient credit conditions separately. The examples assume ordinary non-SEZ taxable services at a hypothetical 18% aggregate GST rate with no exemption solely for arithmetic; they do not settle every telecom charge or input-credit question.
Close the change-control file
Match bills across the supported effective change, classify disagreements and obtain supplier correction through the actual applicable process where needed. An internal spreadsheet edit is not a revised invoice or return. Preserve old evidence and the reason for the final conclusion rather than overwriting the entire history with the current office address.
Six worked illustrations
All facts and amounts are fictional. Calculations illustrate the stated assumptions, not a predetermined legal outcome.
Illustrative example 1: Recorded Delhi billing address
A Maharashtra supplier’s relevant post-paid billing record establishes Delhi for the recipient. Assumed taxable value ₹10,000 at 18% gives IGST ₹1,800, total ₹11,800. Employee use in Maharashtra does not itself replace the stated billing-address branch.
Illustrative example 2: Recorded same-State address
Assume supplier and the relevant recorded billing address are both Maharashtra on the established facts. On ₹5,000 at assumed 18%, CGST and Maharashtra GST are ₹450 each, invoice ₹5,900. The actual supplier establishment must be established, not inferred from its national brand.
Illustrative example 3: Different account populations
One supplier has independently verified corporate accounts with taxable charges ₹30,000 under a Delhi billing record and ₹20,000 under a Karnataka record. Total ₹50,000 is reconciled as two supported populations; internal employee headcount alone would not create this split. At assumed 18%, total tax is ₹9,000.
Illustrative example 4: Inclusive bill
For an independently established ordinary inter-State post-paid supply with 18% tax included in ₹23,600, taxable base is ₹20,000 and IGST ₹3,600. Extracting the base does not prove the correct billing address or tax head.
Illustrative example 5: Relocation review population
A review covers twelve equal ₹2,000 monthly charge records. Eight have one verified billing-record position and four a later verified position, giving ₹16,000 and ₹8,000, total ₹24,000. This is an evidence classification, not a rule that a company move automatically changes tax head on a chosen month.
Illustrative example 6: Duplicate statement and invoice
One ₹3,000 charge plus assumed ₹540 tax appears in an account statement and the invoice import. Unique gross charge is ₹3,540 rather than ₹7,080. Link the records before reviewing location or credit.
Ten-step verification table
| Step | Action | Evidence |
|---|---|---|
| 1 | Confirm domestic scope | Supplier and recipient location evidence. |
| 2 | Confirm post-paid service branch | Actual product and contractual supply. |
| 3 | Identify corporate recipient and account | Contract, account and connection IDs. |
| 4 | Obtain supplier billing records | Relevant address and effective history. |
| 5 | Match relocation communications | Requests and supplier acknowledgements. |
| 6 | Separate personal/group accounts | No unsupported GSTIN substitution. |
| 7 | Classify disputed historical bills | Evidence by supply rather than current-master overwrite. |
| 8 | Determine tax head and rate | Actual supplier location, exceptions and charge-specific review. |
| 9 | Assess credit separately | Recipient entitlement and invoice requirements. |
| 10 | Preserve corrections and reconciliation | Unique amounts and actual supplier reporting changes. |
Sixteen practitioner FAQs
1. Does staff relocation automatically change place of supply?
Not by itself. Establish the relevant billing address on the supplier’s records.
2. Which telecom branch is covered?
Post-paid mobile and internet services within section 12(11)(b).
3. Does this apply automatically to a fixed line?
No. Fixed-line services have a separate statutory branch.
4. Can prepaid service use this rule automatically?
No. Apply its actual branch and facts.
5. Is an internal cost-centre address sufficient?
No. Reconcile the supplier record.
6. Does roaming establish a different place for every user?
Do not replace the statutory test merely with usage locations.
7. Can a later address update rewrite earlier evidence?
No. Establish the actual history and applicable correction treatment.
8. Why retain the supplier acknowledgement?
It supports what change was accepted and the effective record.
9. Can an employee’s personal connection be assumed corporate?
No. Identify the actual contractual recipient and supply.
10. Can any company-group GSTIN be inserted?
No. Establish the relevant recipient and account facts.
11. Does the invoice logo establish supplier location?
No. Determine the actual supplying establishment.
12. Does correct place of supply establish credit?
No. Credit conditions need separate review.
13. Are all telecom amounts universally taxed at 18%?
No. The examples use an expressly assumed rate for the specified arithmetic.
14. Does a spreadsheet correction amend a supplier return?
No. Use the actual applicable correction process.
15. Why match statements and invoices?
They may describe the same obligation and otherwise duplicate expense or credit workings.
16. What should the closing file show?
Account, recipient, relevant billing record, effective history, invoice conclusions and resolved or open corrections.