Boxing Day Sales: A Practical Guide to Winning the Post-Christmas Rush

• Start with one clear offer. Pick a single, easy-to-understand Boxing Day deal before you plan anything else.
• Email and social do the heavy lifting. Your existing customers and followers are the cheapest, fastest audience you can reach.
• Plan and schedule ahead. Set everything up before 26 December so you can enjoy the holiday while your campaign runs.
• Stay on the right side of the rules. Market only to people who’ve opted in, name your business clearly, and make opting out easy.

For UK small businesses, Boxing Day can feel like it belongs to the big chains with their huge banners and deep discounts. It doesn’t have to. A focused plan and a warm customer list will often beat a bigger budget, and you already have both within reach.

This guide covers why Boxing Day sales matter for small businesses, and the different types of offers you can run. It also gives you a step-by-step plan, drawing on our own holiday marketing ideas and small business data. By the end, you’ll have a simple template for your Boxing Day marketing that you can reuse every year.

What are Boxing Day sales?

Boxing Day always falls on 26 December and is a UK bank holiday. In 2026 it lands on a Saturday, so the official bank holiday moves to Monday 28 December. Many shops still open and trade on the 26th, and plenty of sales now run online whatever the calendar says.

The name goes back to the old tradition of giving ‘Christmas boxes’ of money or goods to staff and people in need. Over the last few decades, the day has become the unofficial start of the post-Christmas sales. It’s also marked in Canada, Australia, and New Zealand, so if you sell abroad, the same date matters to those customers too.

Think of it as a fresh start to the shopping calendar. People have time off, gift cards to spend, and a reason to treat themselves after all the giving. Where Black Friday is largely about pre-Christmas gift buying, Boxing Day leans into clearance and self-treats. It’s the moment shoppers turn their attention from giving to getting. That relaxed, ready-to-spend mood is a real opening for a small business.

Why Boxing Day sales matter for your business

According to Barclays, UK shoppers spent an estimated £3.6 billion on Boxing Day 2025. Shoppers are actively hunting for deals on 26 December, and a well-timed offer can put you in front of people who are ready to buy.

The season carries real weight for smaller businesses as well. In our 2025 Small Business Holiday Outlook survey, 60% of small business owners said the holiday season drives up to half of their annual sales. A strong finish in late December can shape your whole year. When that much of it rides on a few weeks, a strategic Boxing Day push is a chance to finish strong.

Here’s why running a Boxing Day sale is worth your time:

• Clear seasonal stock. Sell through Christmas lines you’d rather not store until next winter.
• Capture gift-card spend. Shoppers arrive with vouchers and cash they’re keen to use.
• Wake up quiet customers. A friendly offer re-engages people who went quiet after the Christmas rush.
• Hit year-end targets. A short, sharp sale can close the gap on your revenue goal.
• Compete on service, not price. A local boutique can offer a personal touch the big chains can’t.

Big retailers like John Lewis open their Boxing Day sale online days early. You can borrow the same idea at your scale, with a single email to your best customers. The bottom line is this: Boxing Day rewards the businesses that show up with a clear plan, whatever their size.

Types of Boxing Day offers you can run

Picture two shops on the same high street. One takes 20% off everything, the other bundles its slow sellers with its bestsellers. Both can win, because there’s no single ‘right’ Boxing Day offer.

The best one fits your margins, your stock, and what your customers want. Our 2025 holiday survey of small business owners also found that discounts and sales were the most effective promotion, used by 51% of businesses running holiday promos. That tells you a straightforward deal usually works, so pick a format below and keep it simple. Whichever you choose, you should be able to explain your promo in one clear line.

Percentage-off storewide sale

The classic ‘20% off everything’ deal is easy to explain and easy to shop. It works well when you want quick momentum without fiddly rules. Just set the percentage at a level your margins can genuinely handle.

Use a storewide sale to:

• Announce one clear headline offer
• Drive a rush of first-day orders
• Move a broad range of stock at once

Bundle and multi-buy deals

Group a slow-moving item with a popular one, or run a ‘3 for 2’ on a category. You protect your margin while still shifting stock. It’s an easy way to raise the value of each sale without a deep discount.

Use bundles to:

• Lift the average order value
• Clear products that rarely sell alone
• Give shoppers a reason to add one more item

Clearance on seasonal stock

Deep discounts on Christmas-specific lines free up space and cash. Anything you’d otherwise store for a year is a good candidate. Shoppers love a genuine bargain, and you clear the shelves for your new-year range.

Use clearance to:

• Sell through festive stock fast
• Recover cash tied up in leftovers
• Make room for your new-year range

Gift card and voucher promotions

Plenty of Boxing Day shoppers are spending gift cards from Christmas. Offer bonus credit or make it easy to redeem vouchers, and you’ll capture spend that’s already burning a hole in their pocket. It’s a friendly way to bring in shoppers who might not have planned to buy from you at all.

Use gift card offers to:

• Welcome shoppers spending Christmas vouchers
• Encourage a return visit in January
• Reward people buying for themselves

An early-access offer for your email list

Give subscribers a head start before the public sale. It rewards loyalty and gives people a reason to join your list in the first place. This is where a little urgency earns its keep, so learn how to create urgency in emails without shouting.

Use early access to:

• Thank your most engaged customers
• Grow your list in the run-up
• Spread orders across more than one day

Spend-and-save thresholds

A ‘spend £50, save £10’ offer nudges a bigger basket without a blanket discount. You reward the shoppers who spend more, which is kinder to your margin. It works especially well when your average order already sits close to the threshold.

Use spend-and-save to:

• Raise the average basket size
• Protect margin on smaller orders
• Set a clear, motivating target

A thank you reward for existing customers

An appreciative offer suits UK shoppers, who tend to trust a warm gesture more than a hard sell. A simple ‘thank you for a great year’ discount can turn shoppers into repeat customers well into the new year.

Use a thank you reward to:

• Show past buyers you value them
• Soften the sales feel of the day
• Start the year with goodwill

How your email and social work together

Which channel should you lean on for a Boxing Day sale? For most small businesses, the answer is both, working as one push. Email reaches the people who already know you, while social spreads the word to their friends. Each one makes the other stronger across the sale window.

Email tends to do the closing. In our Q1 2026 Small Business Now survey of more than 1,500 small business owners, 41% expected email marketing to be their most valuable channel this year. That’s a strong signal to make email the backbone of your plan and let social do the discovery. Even a small list can deliver real sales when the message is timely and relevant.

Here’s how email and social work together across the day:

• Tease on social media first: Social platforms like Instagram and Facebook are ideal for broad reach and visual discovery. A few days before Boxing Day, post product sneak peeks, short video previews, or countdown stickers to build excitement and invite followers to join your email list for early access.
• Announce the official launch by email: Email is your most effective tool for driving actual sales. Send your headline offer the moment your sale opens so your message lands directly in subscriber inboxes rather than getting filtered out by a social media algorithm.
• Send a quick reminder the day before: Use a brief email or a quick social story on Christmas Eve to keep your shop top of mind. A low-key “starts tomorrow” nudge gives holiday shoppers a chance to browse your site and prepare their baskets ahead of time.
• Share live updates on social media on Boxing Day: Social channels excel at real-time, dynamic content. Throughout the day, post quick updates on Instagram or Facebook to showcase fast-selling items, share low-stock alerts, and highlight customer tags to create natural urgency.
• Follow up after the sale via email: Email allows for targeted, personalized follow-ups. Send an automated thank-you note to buyers to start building new-year loyalty, and send a “last-chance” reminder to subscribers who didn’t open your first email to capture late-evening shoppers.

How to plan and run your Boxing Day sale

Picture waking up on 26 December to orders rolling in while your emails send themselves. You don’t need a big team to make that happen, just a clear sequence set up ahead of time. The whole thing is more about planning than effort. Work through these six steps.

Step 1: Set a clear goal and one offer

Decide what success looks like before anything else. Whether you want to clear stock, hit a revenue target, or win back lapsed buyers, name it, then choose one offer that matches. A clear goal makes every later decision easier. Slot the sale into your wider plan with a simple marketing calendar so it doesn’t clash with your other campaigns.

Step 2: Grow and tidy your list before the day

The bigger and cleaner your list, the more your Boxing Day email earns. In the weeks before, add sign-up prompts at the till and online to grow your email list. Then clear out old contacts so you reach people who actually want to hear from you.

Step 3: Segment your audience

Not everyone should get the same message. When you segment your email list, you can match the offer to the reader. Past buyers get a thank-you, new subscribers get a warm welcome, and VIPs get early access. Relevant messages get better results and fewer unsubscribes.

Step 4: Build your emails and posts

Now put the campaign together. Start from a template so you can move fast, and lean on ready-made email templates rather than designing from scratch. Write strong subject lines that name the offer, and keep the deal and deadline obvious in the first few lines.

Step 5: Schedule and automate your sends

You shouldn’t have to work on Boxing Day to run a Boxing Day sale. Schedule your announcement, reminder, and last-chance emails well in advance. Then add an automated welcome series so new buyers get a friendly follow-up on their own. Set it up once, and the day looks after itself.

Step 6: Track results and follow up

Once the sale ends, look at what happened. Check your opens, clicks, and sales, and note which offer and subject line pulled best. A short review now saves you hours of guesswork next December. Then thank your buyers, because a kind word today makes your January email far more welcome.

Best practices for a Boxing Day sale that lands

A great Boxing Day sale is built on respect for the reader’s inbox, not the loudest discount. Follow these practices to keep your campaign effective and on the right side of the rules:

• Start early. Plan weeks ahead so nothing is rushed on the day.
• Keep one clear offer. A single, simple deal beats a confusing mix of them.
• Get consent before you email. Under UK PECR and UK GDPR, you usually need permission to market to individuals, and the ICO enforces it.
• Know the soft opt-in. You can email past customers about similar products if you gave them a clear chance to opt out.
• Identify yourself and honour opt-outs. Name your business clearly as the sender, and put a working unsubscribe link in every message.
• Go easy on the urgency. Skip ALL CAPS and endless exclamation marks, which read as pushy here; a calm, clear deadline does the job.
• Test before you send. A/B test your emails to see which subject line or offer lands better.
• Make it mobile-friendly. Most shoppers will read your email on a mobile, so keep it short and tap-friendly.
  We’ve all seen it happen: a shop blasts its whole list one identical email, and a wave of unsubscribes follows the next morning. A little targeting and a lot of permission keep that from being you.

Comparison table: Choosing your Boxing Day offer

Still weighing up which offer to run? This table lines up the main options so you can match one to your goals.

For most small businesses, a single percentage-off deal or an early-access offer is the easiest place to start. You can add the others as you grow more confident.

Make the most of your Boxing Day sales

A successful Boxing Day campaign doesn’t require a massive retail budget, just a clear offer, a clean email list, and a plan set up in advance. By letting your email and social channels work together, you can capture post-Christmas demand while enjoying a well-earned holiday break.

To get your sale ready without the last-minute stress, follow these simple next steps:

• Select a single headline offer: Choose one easy-to-understand deal — like a percentage-off discount, a bundle, or a seasonal stock clearance — that protects your profit margins.
• Tidy and grow your contact list: Add sign-up forms at checkout and on your website ahead of time, and remove unengaged contacts so your emails land in active inboxes.
• Schedule your sends in advance: Draft your announcement emails, social posts, and automated follow-ups well before 26 December so the entire campaign runs on autopilot.

Managing your email, social media, and automated follow-ups from one dashboard keeps your holiday marketing simple. Start your free 30-day trial of Constant Contact today to access ready-made email templates and schedule your Boxing Day campaign in minutes.

FAQs

When do Boxing Day sales start in the UK?

Most Boxing Day sales tend to open on 26 December, though many retailers now start online on Christmas Eve or Christmas Day. Opening a little early can help you catch shoppers before they’re spoilt for choice.

Should you run a Boxing Day sale as a small business?

Yes, because you’re not really competing on price. A personal offer, a thank-you to loyal customers, or a unique bundle gives shoppers a reason to choose you that a big retailer can’t match.

How far in advance should I plan my Boxing Day campaign?

Aim to have your offer, list, and emails ready at least two to three weeks before 26 December. That leaves time to grow your list and schedule everything so the day itself runs on autopilot.

Do I need consent to email customers about my Boxing Day sale?

In most cases, yes. You usually need consent, though the soft opt-in can cover existing customers who had a clear chance to opt out. Your emails should also name your business and include an unsubscribe link.

What if I don’t sell products online?

A Boxing Day offer still works for services and in-person shops. Promote gift vouchers, bookings for January, or an in-store-only deal, and use email and social to drive people through your door.