Short answer
Discounts can increase sales, but if you don't plan them carefully, they can reduce your profit or even lose money on each sale. The goal is to design promotions that meet a financial target. Start by knowing your contribution margin (price minus variable costs) and set a minimum acceptable margin. Then use promo codes with rules like expiration dates, usage limits, or minimum order amounts to control redemption and protect your bottom line. Also, understand the legal rules for marketing via email and SMS-like getting consent and providing opt-outs-and only promote to people who agreed to receive your messages. Events like Small Business Saturday can be great opportunities, but remember they are not officially set by the government, so check the date from a reliable source.
Calculate Your True Costs Before Offering Any Discount
Before you consider discounts, know your costs. Contribution margin is what you have left after subtracting variable costs (materials, shipping, payment fees) from your selling price. For example, if you sell a product for $50 but it costs you $30 in variable costs, your contribution margin is $20 (40%). If you offer a 10% discount ('$5 off'), your price becomes $45, and your margin drops to $15 (33%). That might be okay if you sell more units, but a 30% discount would leave you with only $5 per sale, which may not cover your fixed costs like rent or utilities.
Decide on the lowest margin you can accept. A simple rule is to never go below your variable cost plus a target profit contribution. To see if a discount is worth it, calculate how many extra units you must sell to keep the same total profit. For instance, if you normally sell 100 units at a $20 margin, your profit is $2,000. With a 10% discount (margin $15), you need to sell at least 134 units to make the same profit. If you doubt you can sell that many more, the promotion might not be profitable. It is also wise to segment your customers: offer the biggest discounts to new or lapsed customers, not to your loyal ones who often buy at full price.
- Calculate contribution margin for each product.
- Set a minimum acceptable margin for all promotions.
- Determine the extra volume needed to break even.
- Target discounts to specific audience segments.
Use Promo Codes to Control When and How Discounts Apply
Promo codes let you limit discounts with specific rules. Set expiration dates to create urgency but give customers enough time, like two weeks. Limit codes to one use per person, and use unique codes so you can track who used them and prevent sharing. If you want to increase order value, set a threshold: for example, give $10 off when a customer spends over $75, or offer free shipping on orders above a certain amount. This encourages larger carts and can offset the discount cost.
If you plan a sale on selected products, make sure the code applies only to those items. Run flash sales occasionally, but too many will train customers to wait for discounts. Track redemption rates and the profit from each code, and stop using codes that don't bring in profitable sales. Also, consider making your best customers feel special with a private loyalty discount, while reserving larger discounts for new customers to build your base.
- Set expiration dates and usage limits.
- Use thresholds to boost average order value.
- Create unique codes for better tracking.
- Limit discounts to specific products or customer groups.
Follow the Legal Rules for Email and SMS Promotions
If you promote discounts by email, text, or phone call, you must follow electronic marketing laws. In the UK, the Privacy and Electronic Communications Regulations (PECR) require consent for most electronic marketing to individuals, though there are limited exceptions for existing customers if you collected their details during a sale and market similar products with an opt-out in every message. In the US, the CAN-SPAM Act governs commercial email, allowing unsolicited mail but requiring truthful subject lines and a visible opt-out. Other countries have different rules, so you must check what applies to you.
For text messages, rules are often stricter. Always include a clear way to opt out in each message, and keep records of consent and opt-out requests. If your website uses cookies to measure how well a campaign works, you must inform visitors and get consent where required. These aren't optional; they are legal obligations. Since laws change, always consult the latest guidance from your data protection authority, such as the ICO in the UK. Failing to comply can lead to fines and damage customer trust.
- Get consent for email and SMS marketing where required.
- Always include an opt-out in every marketing message.
- Provide accurate sender information in emails.
- Check with your local regulator for up-to-date rules.
Plan Seasonal and Event-Based Promotions Carefully
Many small businesses look forward to events like Small Business Saturday, which falls on the Saturday after Thanksgiving in the US. However, the U.S. Small Business Administration does not set the date officially; it is an annual observance that can change. So, always verify the date from a current and trusted source, such as your local chamber of commerce or an official announcement, before planning your campaign. Do not rely on past years' dates.
Create a promotional calendar that aligns with your inventory cycle. For example, you might discount seasonal items at the end of the season to clear stock, but consider that you may need a larger discount to move them. For regular products, space discounts to avoid training customers to wait for sales. When you integrate promotions with email or SMS, ensure your list has consent and that every message includes an opt-out. Measure profit from each channel, not just revenue, so you know what really works.
- Confirm the date of events like Small Business Saturday.
- Align discounts with inventory seasons.
- Avoid too many frequent sales to prevent deal-seeking.
- Track channel profitability, not just sales.
Monitor Each Promotion and Adjust Based on Real Results
After you launch a promotion, look at the data: not only how many sales it generated, but also the profit margin and whether those customers return to buy at full price later. A discount that brings in a one-time buyer might not be profitable in the long run, but if they become loyal, you can treat the discount as a customer acquisition cost. Use analytics to see repeat purchase behavior.
Compare each campaign's performance against your break-even targets. If a code does not produce enough incremental sales, discontinue it. For codes that work well, consider making them a regular part of your strategy, but always cap the discount to maintain your floor. Review metrics monthly, observe customer feedback about promotion frequency, and focus on long-term value rather than constantly discounting. If competitors push deep sales, resist a price war and compete on service, quality, or unique products instead.
- Measure customer lifetime value after promotion.
- Review performance monthly against targets.
- Listen to customer sentiment about deals.
- Differentiate on value, not just price.
What to verify
- Marketing laws vary by country and change frequently. Always check the latest official guidance (e.g., ICO for UK, FTC for US) or seek legal advice.
- The exact date of Small Business Saturday changes each year and is not officially set by any government authority; confirm from a reliable current source.
- Margin and break-even calculations depend on your actual costs and market response; always test assumptions with small-scale pilots where possible.
Questions and answers
What is PECR and how does it affect my discount emails?
PECR stands for Privacy and Electronic Communications Regulations, which apply in the UK to electronic marketing messages, including email and SMS. It requires consent for most marketing to individuals, with limited exceptions for existing customers under strict conditions. You must provide a clear opt-out in each message. Non-compliance can result in fines, so check the ICO's guidance to understand your obligations. [1]
How can I set a discount that doesn't kill my margin?
Start by calculating your contribution margin for each product: price minus variable costs. Decide on the minimum margin you need to stay profitable. Then, the maximum discount is the difference between your regular price and the price that yields that minimum margin. Test the promotion, track redemption and incremental sales, and compare to your break-even analysis. Stop it if it doesn't generate enough additional volume.
When is Small Business Saturday and who sets the date?
Small Business Saturday is traditionally the Saturday after Thanksgiving in the United States. However, the exact date can change each year, and it is not officially set by the Small Business Administration or any government body. To avoid misinformation, check a reliable current source, such as your local chamber of commerce or official announcements, before planning. [2]
Sources and verification date
- Official source: ico.org.ukico.org.uk · Checked
- Official source: sba.govsba.gov · Checked