Does the GST Composition Scheme Reduce Your Income Tax?
Say you've opted into the GST Composition Scheme. Your turnover's under 1.5 crores, you're paying a flat 1% or 5% or 6% instead of wrestling with monthly invoices, and your accountant finally stopped calling. Genuinely good news. Fewer filings, less input-output reconciliation, more time to actually run the business.
And here's where the wires get crossed. Composition scheme relief shows up in your bank account as lower GST outgo. It feels like a tax win. And because it feels like a tax win, plenty of business owners assume it shrinks their income tax bill too, no extra effort required. But it doesn't. Not by a rupee.
GST vs Income Tax: What's the Difference for a Business Owner?
GST taxes what your business sells. Income tax taxes what you, the individual, earn. The composition scheme only adjusts the first number. Your income tax return, filed separately under the Income Tax Act, has no idea the composition scheme even exists.
Try the math on a small trader with 40 lakh annual turnover and a 6% net margin, so 2.4 lakhs in personal income for the year. Under composition, they pay 1% of turnover as GST, roughly 40,000, instead of dealing with regular GST's compliance load. But when tax season arrives, that 2.4 lakhs in personal income gets taxed exactly as it would have even if they'd never opted for composition at all. Hence, there’s no link between the two, to be honest.
What Is Section 123 of the Income Tax Act, 2025?
This is where Section 123 of the Income Tax Act, 2025 comes in, the renumbered version of the old Section 80C, made effective from 1st April 2026.
Read with Schedule XV, Section 123 lets individuals and HUFs deduct up to 1.5 lakh a year across a specific list: PPF, ELSS, home loan principal, tuition fees for up to two kids, and life insurance premiums. For a business owner who's also an individual taxpayer, like most sole proprietors and partners who fall under the same group, this is the actual dial that moves personal tax liability and not the GST scheme.
Can You Claim Life Insurance Premium Under Section 123?
Consider the same trader, paying 40,000 a year toward a life insurance premium, he can claim the full amount under Section 123, assuming the premium sits within the eligible cap of the sum assured.
What Are the Conditions to Claim the Section 123 Deduction?
Two, actually.
First, Section 123 is only available under the old tax regime. If you've switched to the new regime for its lower slab rates, this deduction isn't on the table for you.
Second, the eligible premium is capped at 10% of the sum assured for policies issued on or after 1st April 2012 (20% for older policies, 15% for policies covering persons with disability or specified diseases). If you pay more than that, the excess simply doesn't count toward your deduction.
The Bottom Line for Small Business Owners
Running a small business under the GST Composition Scheme is a genuinely smart call. Just don't assume for it to reduce anything from your personal tax liability. Your personal income tax bill is a separate thing altogether, that runs through the old regime, Section 123, and Schedule XV, and it rewards planning the same way the composition scheme rewards simplicity.
Two different problems. Two different fixes. It is worth knowing which one you're actually solving before assuming the box is already ticked.
Know a fellow business owner who thinks their GST filing status is also their tax-saving strategy? Might be worth sending this their way.