Karnataka High Court Directs State to Reimburse Differential GST to Works Contract Contractor — Naganath Constructions Case

Overview of the Case

The Karnataka High Court recently adjudicated a significant writ petition filed by a Class-I Registered Civil Contractor, Naganath Constructions Engineers And Contractors, against the Government of Karnataka, seeking a direction compelling the State authorities to reimburse differential Goods and Services Tax (GST) liability that arose due to the transition from the Value Added Tax (VAT) regime to the GST regime. The petitioner sought reimbursement of Rs. 1,50,935.68/-, along with interest at 18% per annum from the date of remittance until actual realization, in terms of a representation dated 25.06.2026.

This ruling reinforces a settled legal position concerning the financial obligations of State governments and their instrumentalities toward contractors who bore additional tax burdens solely on account of the mid-contract introduction of the GST framework.


Background and Factual Context

Nature of the Works Contract

Naganath Constructions Engineers And Contractors, a Class-I Registered Civil Contractor, was entrusted by the State with a specific infrastructure project — rectification of road surface, recarpetting, and improvements of Kuchegar Kodar Road from KM 0.00 to 2.00 in Karwar Taluka, Uttara Kannada District.

The contract was already underway when a landmark shift in India's indirect taxation landscape occurred. The Goods and Services Tax regime came into force with effect from 01.07.2017, effectively replacing the erstwhile Value Added Tax (VAT) regime that had been governing indirect taxes on goods and services prior to that date.

The Tax Transition Problem

When the GST regime was introduced mid-contract, the petitioner — like thousands of other infrastructure contractors across the country — was confronted with an unforeseen and additional tax liability. The original contract had been priced and executed under the VAT framework. With GST coming into effect, the applicable tax rates and structures changed, resulting in a higher tax burden on the contractor.

The petitioner bore this differential tax liability and made the requisite payment before the competent authority. However, the State Government and its respondent departments failed to take any action to reimburse this extra amount, prompting the contractor to approach the Karnataka High Court by way of a writ petition seeking a writ of mandamus.


The central legal question was whether the State Government and its instrumentalities are legally obligated to reimburse a works contractor for the differential GST liability that arose due to the switchover from the VAT regime to the GST regime during the subsistence of a works contract.

The court also considered whether the petitioner had established a legal right sufficient to invoke the extraordinary jurisdiction under Article 226 of the Constitution of India and obtain a writ of mandamus against the State.


Court's Analysis and Observations

Issue No Longer Res Integra