Discounts and coupons are among the simplest ways to bring customers back to an online store, but they only work when they are set up with care. A well-planned offer can turn a hesitant visitor into a buyer; a careless one eats into profit and trains customers to wait for the next sale.

In this guide, I will show you how to set up discounts and coupons, from choosing the right offer to measuring the results. I write from my own experience running the Synex Technologies e-commerce store, synex.bd, where I handle day-to-day operations alongside my role as IT & Digital Operations Manager at TechLand Bangladesh.

Start with the Goal, Not the Discount

Before you create any offer, decide what you want it to achieve. Different goals call for different discounts.

• Win new customers: a modest first-order discount gives a new visitor a reason to try your store.
• Recover abandoned carts: a small incentive can bring back shoppers who left items behind.
• Clear slow-moving stock: a targeted discount on specific products moves inventory without cutting prices store-wide.
• Increase order value: a discount above a minimum spend encourages larger baskets.
• Reward loyal customers: an exclusive coupon makes repeat buyers feel valued and gives them a reason to return.

Write the goal down first. If you cannot state it in one sentence, the offer is not ready yet.

Choose the Right Type of Discount

Percentage discounts

A percentage discount, such as 10% off, is easy to understand and scales automatically: buying more saves more. Avoid high percentages on low-priced items, where they can erase your margin.

Fixed amount discounts

A fixed discount, such as a set amount off the order total, is simple and predictable: you always know what each redemption costs.

Free delivery

Delivery charges are a common reason shoppers abandon their carts. Free delivery above a minimum order value removes that objection without cutting your product prices. Show the threshold on the cart page.

Buy one, get one

A buy-one-get-one offer works well for products you want to move in volume or introduce to new customers. State plainly whether the free item is the same product, a cheaper one, or a related one.

Set Clear Rules for Your Coupon

A coupon without rules is an invitation to misuse. Most platforms let you control who can use a coupon and when, so use those settings wisely.

• Minimum order value: set a threshold slightly above your typical order value, so it encourages one more item.
• Expiry date: every coupon should have one. A deadline creates urgency and stops a code circulating after the promotion ended.
• One use per customer: for first-order or loyalty coupons, allow a single use each.
• Product and category limits: decide whether the coupon covers the whole store or only selected products. Excluding low-margin products protects profit.

How to Create the Coupon in Your Store

The exact steps depend on your platform, but the process is similar in most systems, including OpenCart, WooCommerce and Shopify.

1. Name the coupon clearly: use an internal name that tells you its purpose, such as "First Order 10".
2. Choose the code: pick something short and easy to type, such as WELCOME10.
3. Select the discount type: percentage, fixed amount, free delivery or buy-one-get-one, as decided earlier.
4. Set the value and the rules: enter the percentage or amount, then the minimum spend, expiry date, usage limit and product restrictions.
5. Test it before launch: place a test order with the code and confirm it applies correctly, and that an ineligible order does not receive it.

Always test first. A code that fails at checkout is worse than no promotion at all, because it frustrates a customer who was ready to buy.

Promote the Offer and Protect Your Margins

A coupon only works if the right people see it. Add a banner on the homepage and cart page, send the code to existing customers or shoppers who abandoned a cart, and share it on social media. If you also want to reduce the number of shoppers who leave without buying, read my guide on how to reduce cart abandonment in your online store.

Every taka given away comes from your margin, so work out the cost on a typical order before launching. Never discount everything at once, and avoid stacking discounts: a coupon combined with a sale price can cut far deeper than you intended. Set a rough budget, and watch results daily so you can pause the offer if redemptions run far higher than planned. Payment also affects the final cost of an order; my guide on choosing a payment method for an online store in Bangladesh covers the practical options.

Measure the Results

Once the promotion ends, look at what actually happened instead of guessing. Most platforms report how many times a coupon was used and the total value of those orders. Ask whether the average order value rose, how many customers were new, and whether the promotion brought in orders that would not have happened otherwise. Most importantly, check whether the campaign was profitable after the cost of the discounts. Write the answers down: over time, they show which offers work and which to stop repeating.

Frequently Asked Questions

How much discount should I offer in my online store?

There is no single right figure. A modest discount is often enough to change a hesitant shopper's mind, and it is far safer for your margin than a large one. Start small and increase it only if the results justify it.

Should I use a coupon code or an automatic discount?

Coupon codes suit a specific group, such as new customers or email subscribers, because only people with the code can use them. Automatic discounts are better for store-wide offers, such as free delivery above a minimum spend.

How long should a coupon campaign run?

A short, clearly dated campaign creates urgency and is easier to control. A few days to a couple of weeks is a reasonable range. Avoid open-ended coupons: they lose urgency and keep costing you.

Can discounts hurt my online store?

Yes, if they are used too often or too generously. Constant discounting teaches customers to wait for the next offer, and deep cuts can erase your profit. Use promotions with a clear goal, a fixed end date and rules that protect your margins.

Conclusion

Setting up discounts and coupons is not difficult, but doing it well takes a little planning. Start with a clear goal, choose the offer type that fits it, set firm rules on minimum spend, expiry and usage, test the code before launch, and measure the results when the campaign ends. Done this way, a promotion grows your store instead of quietly leaking profit. Try one small offer first, learn from the numbers, and build your next campaign on what worked.