Section 173 of CGST explained: this guide covers what it means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.
Section 173 of the CGST Act, 2017 amends the Finance Act, 1994 (Act 32 of 1994) by omitting its Chapter V. Chapter V was the legal basis for service tax in India. By deleting it, Section 173 formally withdraws the service tax levy so that services are instead taxed under GST from the appointed day (1 July 2017). This is one of the "housekeeping" provisions that dismantles the pre-GST indirect-tax structure — with service tax subsumed into GST, there is no longer a parallel charge on services, and any future taxable service falls squarely under CGST, SGST or IGST.
What Section 173 Says — In Plain English
Service tax in India was never a standalone Act. It lived inside Chapter V of the Finance Act, 1994 — sections 64 to 99 — which held the charging provision, valuation, registration, returns, credit rules, penalties and appeals for services. Section 173 does one clean thing: it switches that chapter off. Once Chapter V is omitted, the legal engine that charged service tax no longer exists, so from the appointed day services are taxed only under GST. There is no gradual phase-out and no overlap; the old chapter simply stops applying going forward.
The drafters chose omission rather than repealing the whole Finance Act because the 1994 Act also carried other, unrelated levies. Excising just Chapter V removes service tax surgically while leaving the rest of the statute intact.
It also helps to remember why service tax needed a dedicated exit provision at all. Unlike central excise, which had its own standalone Act repealed under Section 174, service tax had no separate statute — it was grafted onto the annual Finance Act of 1994. So the cleanest way to end it was to delete the specific chapter that housed it. Section 173 is therefore best understood as the services counterpart of Section 174: together they take down both pillars of the pre-GST regime — service tax through omission of a chapter, and excise and cesses through repeal of whole Acts — so that goods and services alike come under one unified GST from the appointed day.
Clause / Sub-section Breakdown
| Element | Effect |
|---|---|
| Operative words | "Save as otherwise provided in this Act, Chapter V of the Finance Act, 1994 shall be omitted." |
| What is omitted | Chapter V (sections 64–99) of the Finance Act, 1994 — the complete service tax code: charge, valuation, registration, returns, CENVAT credit, penalties, appeals. |
| "Save as otherwise provided" | Preserves anything the CGST Act specifically keeps alive, so the omission is not absolute where the Act says otherwise. |
| Effect date | Operates from the appointed day, 1 July 2017. |
- The general saving of accrued service tax liabilities is handled separately under Section 174.
- Transitional carry-forward of credit and settlement of straddling liabilities is dealt with in Chapter XX (Sections 139–142).
Applicability & Scope
Section 173 took effect from the appointed day on which GST commenced — 1 July 2017. From that date no fresh service tax could be levied because its charging provision no longer existed. Any taxable service supplied on or after the appointed day falls under GST. Services supplied before that date, and liabilities that had already accrued, remain governed by the old law by virtue of the saving provisions. The scope is therefore prospective: it removes the levy for the future while the past continues under the saved Chapter V.
In practice this draws a bright line at 1 July 2017. A service invoice dated 30 June 2017 attracts service tax under the old Chapter V; a service invoice dated 1 July 2017 attracts CGST + SGST (or IGST). The transition of accrued CENVAT credits and pending assessments is handled through the transitional provisions and the saving clause in Section 174.
The scope reaches every kind of taxable service that existed under the old regime — professional and consultancy fees, works contracts, transport, telecom, banking and financial services, renting of immovable property and the rest — all of which now attract GST from the appointed day. The reverse-charge situations that existed under service tax were likewise carried into the GST framework rather than continuing under Chapter V. What Section 173 does not touch is the past: the point-of-taxation rules, valuation and CENVAT provisions of the old chapter remain the yardstick for determining service tax on any service whose taxable event fell before 1 July 2017, even if the dispute is resolved years later. In this sense the omission is forward-looking only, and a taxpayer with a pre-GST service must still apply the old chapter to that transaction while applying GST to everything from the appointed day onward.
Worked Examples
Example 1 — invoices on either side of the cut-off.
| Date of supply of service | Applicable tax | Governing law |
|---|---|---|
| Before 1 July 2017 | Service Tax | Chapter V, Finance Act 1994 (kept alive for past liability) |
| On or after 1 July 2017 | GST (CGST + SGST / IGST) | CGST/SGST/IGST Acts, 2017 |
A consultant raising a fee invoice on 15 July 2017 charges GST — the earlier service tax has ceased to apply because Section 173 removed the levy from that date onward. If the same consultant had a service tax demand for a period before July 2017, that demand survives under the saved old law.
Example 2 — a straddling contract. A software firm signs an annual maintenance contract running from April 2017 to March 2018. Services performed up to 30 June 2017 attract service tax under Chapter V, while services from 1 July 2017 onward attract GST. The firm splits the billing at the cut-off, and any eligible CENVAT credit accumulated on the pre-GST portion is carried into GST through the transitional credit mechanism under Section 140.
Step-by-Step in Practice
1. Identify the date of supply of the service against the appointed day, 1 July 2017. 2. If the supply is before that date, apply service tax under the saved Chapter V and its point-of-taxation rules. 3. If on or after, apply GST — determine place of supply, charge CGST+SGST or IGST, and issue a GST-compliant tax invoice. 4. For contracts that straddle the date, apportion the value and bill each part under its own law. 5. Carry forward eligible closing CENVAT credit on services into the electronic credit ledger via TRAN-1 under Section 140. 6. Continue to defend or pursue any pre-GST service tax proceeding under the old law as saved by Section 174.
Common Mistakes & Practical Notes
- Assuming the omission wiped out past service tax — it is prospective; pre-July-2017 liabilities are preserved through Section 174.
- Charging both service tax and GST on the same post-cut-off supply — only GST applies from 1 July 2017.
- Forgetting to file TRAN-1 in time and losing carry-forward of CENVAT credit on input services under Section 140.
- Mis-dating straddling contracts instead of apportioning value at the cut-off.
- Thinking the whole Finance Act, 1994 was repealed — only Chapter V was omitted; other levies remain.
- Overlooking the "save as otherwise provided" wording, which preserves anything the CGST Act specifically continues.
Related Sections
Read Section 173 with Section 174 (repeal and saving of the remaining pre-GST laws such as central excise), and with the transitional provisions in Chapter XX — especially Section 140 (transitional input tax credit) and Section 142 (miscellaneous transitional provisions), which together carry forward credits and settle liabilities that straddle the changeover to GST.
Recent Amendments & Context
Section 173 is a one-time transitional provision and, having done its job of omitting Chapter V on 1 July 2017, it has not needed later amendment. Its context, however, remains live because service tax litigation for pre-GST periods continued for years — investigations, show-cause notices and CESTAT appeals under the saved Chapter V were still being decided well after 2017. The Government also ran the Sabka Vishwas (Legacy Dispute Resolution) Scheme, 2019 to help taxpayers settle legacy service tax and excise disputes, underscoring that while Section 173 ended the levy prospectively, the tail of the old regime was wound down separately. Any residual service tax matter today is still governed by the omitted-but-saved Chapter V read with Section 174 and the General Clauses Act, 1897.