How does GST affect profit margins?

For registered businesses, GST is largely neutral on margin because the GST collected on sales (output tax) is offset by GST paid on purchases (ITC). The margin impact comes when inputs have a different GST rate than outputs (inverted duty structure), or when ITC is blocked under Section 17(5), increasing the effective purchase cost.

How do I calculate selling price to achieve a target margin after GST?

To achieve a target margin: (1) Start with your cost price (excluding GST if you can claim ITC). (2) Add your desired profit percentage. (3) Add GST on the final selling price. The formula is: Selling Price = Cost / (1 - Target Margin%). Then add GST on top of that.

Should I price including or excluding GST?

B2B pricing is typically quoted excluding GST (the buyer claims ITC and the GST is a pass-through). B2C pricing must include GST — the MRP shown on products must include all taxes. For B2C, ensure your target margin is calculated on the pre-GST price, not the MRP.

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Cost Price (₹) — Excl. GST

Your purchase price excluding GST (assuming you claim ITC)

Target Profit Margin (%)

Selling Price (₹) — Excl. GST

GST Rate on Sale (%)

Customer Type

Overhead Cost (₹) — per unit/order

Packaging, shipping, fixed cost allocation, etc.

Pricing Analysis

Cost Price (excl. GST) —

Overhead Cost —

Total Cost —

Selling Price (excl. GST) —

GST Amount —

Invoice Amount (incl. GST) —

Gross Profit —

Profit Margin % —

Markup on Cost % —

Cost—Revenue

Worked Examples

B2B Trade example: Cost ₹1,000 (excl. GST). Target margin 25%. GST 18%.
Selling price = ₹1,000 ÷ (1 − 0.25) = ₹1,333. GST = ₹240. Invoice = ₹1,573. Buyer claims ₹240 ITC. Your profit = ₹333 (25% margin).

B2C Retail example: Cost ₹500 (excl. GST). Target margin 30%. GST 12%.
Selling price = ₹500 ÷ 0.70 = ₹714. GST = ₹86. MRP on pack = ₹800. Customer pays ₹800. Your profit = ₹214 (30% margin on base).

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Frequently Asked Questions

What is the difference between margin and markup?▾

Profit margin is calculated on the selling price: Margin = Profit ÷ Selling Price. Markup is calculated on the cost price: Markup = Profit ÷ Cost Price. A 25% margin = 33.3% markup. A 20% markup = 16.7% margin. Always specify which you mean when discussing pricing.

Does GST reduce my profit margin?▾

For B2B transactions, GST is neutral to margin because both you and your buyer are registered — you collect GST and remit it, your buyer reclaims it as ITC. For B2C, if you are absorbing GST rather than adding it on top, your effective margin reduces. Always price your B2C goods with GST built into the customer-facing price.

How do I handle blocked ITC in margin calculations?▾

If ITC is blocked on your purchases (e.g., you buy a car for business and GST is blocked), include the full cost price INCLUDING GST in your cost base. The blocked GST becomes part of your cost, not a recoverable credit.