A discount is the fastest tool for moving sales — and the fastest for hiding a loss. Orders go up, the packing team is busy, and dashboard numbers look impressive. Then after the season it turns out total profit was lower than in an ordinary month. The reason is simple: a discount doesn’t just come off the selling price — it comes straight out of your profit.
This guide explains how to calculate a discount’s effect before launching it, how many extra sales you need to make up for it, which offer types suit your store, and alternatives that attract customers without breaking your margin.
The fact everyone forgets: discounts come out of profit
A product sells for SAR 200 and you make 60 on it (a 30% margin). A 20% discount drops the price to 160, but your cost hasn’t changed. Your profit is now SAR 20. A discount that looks like “20%” to the customer is actually a 67% cut to your profit on that order.
To make the same total profit, you’d need to sell three times as many. This is the most important formula before any offer:
Required extra sales = discount ÷ (margin − discount)
| Current margin | 10% off | 20% off | 30% off |
|---|---|---|---|
| 30% | +50% | +200% | Impossible (loss) |
| 40% | +33% | +100% | +300% |
| 50% | +25% | +67% | +150% |
| 60% | +20% | +50% | +100% |
Read it carefully: a store with a 40% margin offering 20% off must double its sales just to stand still on profit. When the discount equals or exceeds the margin, every order is a loss however many you sell.
Our discount calculator shows the discounted price and savings — and if you enter product cost, it calculates the remaining profit and the extra sales needed to break even.
“Margin” here means real margin after shipping, commission and payment fees — not the simple gap between price and cost. If you don’t know it precisely, work it out first with our profit margin calculator.
Types of discount and when each fits
Percentage off
“15% off everything.” Easy to understand and good for mid-priced products. On expensive products, though, it gives away large amounts that may exceed what you need to convince the customer.
Fixed amount off
“SAR 50 off orders over 300.” Protects margin on big orders and raises average order value, because customers add items to reach the threshold.
Buy more, save more
“Second item half price” or “3 for 2.” Good for consumables and repeat purchases. The effective discount on the whole order is smaller than it looks: “second half price” equals 25% off two items — and you sold an extra unit. The calculator’s buy-X-get-Y mode shows the real per-unit price for these offers.
Free shipping
One of the strongest incentives in the Saudi market. Tied to a minimum order, it turns from a cost into a tool for raising order value.
First-order discount or special code
Useful for converting new visitors or measuring a specific channel (an influencer’s code, for example). Make sure it’s once per customer.
VAT and discounts: order of calculation
If your prices include VAT, the discount applies to the inclusive price, and the new VAT is extracted from the discounted price. The common mistake is discounting the inclusive price and then adding VAT again, so the customer pays VAT twice. Once you have the final price from the discount calculator, extract the VAT from it with our VAT calculator. For details see our VAT calculation guide.
Stacked discounts: 20% + 10% isn’t 30%
An offer of “20% off plus an extra 10% with a code” actually equals 28%, because the second discount applies to the already-discounted price: 100 × 0.8 × 0.9 = 72. That matters both ways: don’t advertise “30%” if the maths is sequential, and don’t assume your store adds the two if the platform stacks them. To find the effective rate of any stacked offer, enter the original and final prices in the calculator’s “% between prices” mode.
Seasons: White Friday, Ramadan and Eid
- Start from your margin, not the competitor: if they offer 40% and your margin is 35%, matching them is a guaranteed loss.
- Target your discounts: bigger discounts on high-margin products or slow stock, smaller or none on best-sellers.
- Account for higher ad costs: ad costs usually rise in peak seasons because of competition, so the post-discount margin must absorb them.
- Prepare stock and shipping: a successful offer with stock-outs or late deliveries hurts your reputation more than it helps.
- Be honest about the original price: raising prices before the season to show a bigger discount damages trust and may breach consumer-protection rules.
Alternatives that protect margin
- Bundles: pair a popular product with a high-margin one at an attractive price.
- Gift with purchase: a gift that costs you SAR 10 may feel worth 40 to the customer.
- Loyalty programmes: points or a discount on the next order, so the customer comes back rather than buying once.
- Early access: exclusive value for existing customers without lowering prices.
How to measure an offer’s success
Not by order count alone. Compare total profit during the offer with a comparable period without it, and track new customers and how many came back to buy at full price. Use UTM links for every promotion channel so you know which brought profitable orders.
An offer plan in five steps
- Define the goal precisely: clearing slow stock? Winning new customers? Raising order value? Each goal suits a different offer type, and an offer that tries to do everything achieves nothing clearly.
- Choose the products: start with high-margin products or slow stock, and leave out products that sell well at full price.
- Work out the discount ceiling: for each product, enter price and cost in the discount calculator and make sure post-discount profit covers the expected ad cost per order.
- Set duration and rules: a clear start and end date, whether the offer stacks with other codes, and a quantity cap if needed.
- Prepare measurement: a different code or link per channel, and figures from a comparable earlier period to compare against afterwards.
When the offer ends, write a short note: what worked, what didn’t, and what the real profit was. Those notes are what make next season’s offer smarter than this one.
Key takeaways
- A discount comes out of your profit, not just the price — work out the extra sales needed before launch.
- When the discount equals or exceeds your margin, every order loses money however many you sell.
- A fixed-amount discount with a minimum spend protects margin and raises order value.
- Stacked discounts compound, so 20% + 10% equals 28%.
- Judge an offer by total profit and new customers, not order count.
Frequently asked questions
What’s the best discount percentage?
There’s no universal ideal. The best is the smallest that moves the customer and still leaves you a profit — which depends on your margin. Start small and test.
Is a fixed-amount discount better than a percentage?
For large orders, usually yes — it protects margin and raises order value. For cheap products, a percentage often reads more clearly.
Do frequent discounts hurt the brand?
Yes, if they become permanent: customers learn to wait for the sale and stop buying at full price. Keep offers to clear, limited seasons.
A good discount is a calculated decision, not a reaction to a competitor. Work out your next offer’s impact now with our free discount calculator — and if you’re planning a sale season and want offers and ads that work together, get in touch.
