Administrative Law

Gwalior Rayon Silk Mfg. Co. v. Assistant Commissioner of Sales Tax

AIR 1974 SC 1660

Facts

Parliament enacted the Central Sales Tax Act, 1956.
Section 8(2)(b) linked the rate of Central sales tax to the rate of sales tax in the concerned State.
The taxpayer argued that Parliament had not fixed the tax rate itself.
It claimed Parliament had delegated its essential legislative function to State Legislatures.

Legislature cannot delegate its essential legislative function.
Essential legislative function means laying down the policy, principle or standard.
Once policy is laid down, the legislature can leave details or machinery to another authority.
Delegation becomes invalid only when there is no guidance or the legislature abdicates its function.

The challenge was that Parliament had simply adopted whatever tax rate the States fixed.
The Court rejected this.
It said Parliament had not blindly surrendered its power.
The policy behind Section 8(2)(b) was clear: to prevent evasion of Central sales tax.
If Central sales tax was lower than local sales tax, dealers could misuse inter-State transactions to avoid higher local tax.
Therefore, Parliament deliberately connected Central tax with the local State rate.
This was not abdication; it was a practical method to make the Central tax system workable.
The Court also distinguished this from Shama Rao v. Union Territory of Pondicherry.
In Shama Rao, the legislature had adopted future amendments of another legislature wholesale.
That was treated as legislative abdication.
But in Gwalior Rayon, Parliament itself laid down the policy and formula.
The State rate was only used as a reference point within that policy.
The case is also important because the Court rejected Justice Mathew’s broader view that delegation is valid merely because the legislature retains power to repeal the law later.
The majority reaffirmed that courts must still check whether the statute contains policy and guidance.

The Supreme Court upheld Section 8(2)(b).
It held that there was no excessive delegation.
Parliament had laid down a clear legislative policy: preventing evasion and ensuring Central tax was not lower than State tax.
Use this case for: delegation is valid when the statute contains an intelligible policy, even if the executive/another authority works out variable details.
Best used with:
Delhi Laws Act — essential legislative function cannot be delegated;
Hamdard Dawakhana — vague unguided delegation invalid;
Gwalior Rayon — policy-guided delegation valid;
Shama Rao — wholesale adoption of future law invalid.