2026 E-Commerce Campaign Calendar

A seller without a campaign calendar is always late to the discount. While a competitor prepares their storefront three weeks ahead, you spot the special day on social media and scramble to cut prices that same morning; stock runs short, shipping capacity fills up, and the discount panics its way below your margin. This article exists to prevent exactly that: we have gathered every sales-relevant special day and discount period of 2026 into a single table, added a margin-safe preparation step for each period, and answered — from a seller's point of view — the question of "when, what, and how much should I discount?" The goal is not to memorize it, but to build the calendar once and walk into every season prepared.

Why keep a campaign calendar?

Special days are predictable. February 14 comes every year; November is every year the busiest month for marketplaces. The only reason to be caught unprepared by something predictable is not having written it down. Keeping a campaign calendar has three concrete benefits:

• Stock plan: You place supply orders weeks in advance so you do not sell out on the busy day; goods stuck at customs or the manufacturer will not arrive after the campaign is over.
• Price plan: You calculate the discount calmly, from cost up — not under the stress of the day. A discount set in a panic is a discount that eats your margin.
• Content and ad plan: Visuals, descriptions, and sponsored-product budgets are ready before the campaign; a storefront thrown together at the last minute does not convert.

The one-sentence rule: If a discount pushes you below your minimum margin, do not join that campaign. Selling at a loss for revenue melts inventory but does not grow the business. The first item of every special-day preparation is to confirm that the lowest price you will sell at that day still leaves a profit.

2026 special days and discount periods in one table

The table below collects the main special days and periods that directly touch e-commerce sales in Turkey. We have noted the day of week for fixed civil dates; religious days (Ramadan, the Eids) are based on astronomical estimates and shift year to year — always verify the exact date against the current official calendar. The "prep window" shows how many weeks ahead you should start working.

* Fixed dates follow the official calendar; religious dates are estimates and may shift a day or two. Marketplaces open their own campaign periods around these days under their own names (for example "Legendary Days", "Flash Deals"); your calendar should include not just these official days but also the campaign registration dates the marketplace announces. Registration usually closes weeks before the campaign itself.

Margin-safe preparation: the base rule of every discount

The heart of a campaign calendar is not the date but the price floor. Before every special day, you need to know a single number: the lowest price you can go to on that product. This floor is the price that still protects your target minimum margin after all deductions (commission, commission VAT, shipping, service fees, withholding) are subtracted. The moment you push the discount below this floor, every sale takes money out of your pocket.

A simple example makes it clear. Say your product cost is 100 TL and your regular price is 200 TL. In the campaign you cut it to 120 TL as a "40% off." Still sounds like 20 TL of profit, right? But commission, commission VAT, shipping, and withholding come out of that 120 TL; if total deductions land in the 35–45 TL band, selling at 120 TL puts you at a loss. Had you calculated the minimum-margin floor in advance, you would have made the decision "I cannot drop this product below 150 TL" before the campaign, with a clear head.

Instead of working out this floor by hand for every product, enter your regular price, cost, and intended discount rate into the campaign discount calculator and let it show whether the discounted price still leaves a profit after commission and deductions. To pin down the minimum-margin floor on its own, the profit margin calculator reverse-calculates the price that matches your target margin. And to see in depth why the discount's effect on margin is harsher than most sellers assume, the effect of campaign discounts on profit margin article is a natural continuation of this section.

A practical method: assign each product a "discount floor" label. Do not let yourself set that product's campaign price below the floor value. That way you move the discount engineering off the night of the special day and onto a calm week on your calendar.

How much lost revenue does "40% off" really mean?

When you cut the price, you have to sell far more units to recover the old profit. On a product that left 80 TL of profit at 200 TL, if a 30% discount drops profit to 40 TL, you have to double your unit sales just to reach the same total profit. If the campaign does not bring those extra units, the discount only melts margin. So on every special-day decision, ask two questions together: "Is this discount above the floor?" and "Does this discount really bring extra units, or am I just selling stock I would have sold anyway at a lower price?"

Period-by-period prep: what to do for each special day?

Every period in the table has its own logic. Below we group the periods and collect, for each, the sellable categories, the timing, and the margin-safe preparation step. The common thread never changes: do not go below the discount floor.

First quarter: Valentine's, Women's Day, Ramadan

The year opens with two gift-driven days. Valentine's Day favors jewelry, personal care, small tech, and gift sets; Women's Day strengthens cosmetics and fashion. Ramadan is a completely different rhythm: food, kitchen, home textiles, and iftar-table products see steady demand across four weeks.

• Timing: For Valentine's, prepare gift sets and visuals 3–4 weeks ahead; for Ramadan, spread your stock cycle across the whole month rather than cramming it into the first week.
• Margin protection: A "bundle discount" looks attractive on gift sets, but a bundle stacks more than one deduction; price the set from total cost + total deductions, not item by item, and apply the discount floor to the bundle too.

Spring: April 23, Mother's Day, the Eids

April 23 is the day of kids' products, toys, and stationery; small volume but a strong niche. Mother's Day is one of the year's biggest gift windows — cosmetics, jewelry, home & living, and flowers peak. The Ramadan and Sacrifice Eids feed apparel, footwear, kitchen, and travel categories; the "refresh yourself" demand before the Eid runs high.

• Timing: Set up ads and the storefront 3 weeks before Mother's Day; shipping load spikes in the last 3 days, so announce cutoff times clearly.
• Margin protection: Return rates rise in gift categories (didn't like it, wrong size). When you calculate the discount floor, subtract the expected return share too; even when a return refunds the commission, it usually does not bring back shipping and labor cost.

Summer and back to school: long-running periods

Summer is a discount period spread across a season rather than a single day: fashion, outdoor, beach, and cooling products. Marketplaces open big "summer sales" in June–July. Back to school is a planned and repeating demand from mid-August into September, on the stationery–bags–electronics–kids' apparel axis.

• Timing: Back-to-school demand is not a single wave; shopping starts in mid-August and peaks again in the first week of September. Split stock and discounts across two waves.
• Margin protection: Staying "always discounted" over long periods drags the price permanently down to floor level. Keep discounts time-boxed; do not fix a below-floor price "for the whole season," or returning to the normal price becomes hard.

November storm: 11.11 and Black Friday

November is the busiest month in Turkish e-commerce. It starts with 11.11, peaks with Black Friday (Nov 27, 2026), and closes with Cyber Monday. In these weeks traffic, conversion, and competition all peak at once; but this is also the period of the highest discount pressure — the period where margin melts most easily.

• Timing: Campaign registration closes weeks ahead — stock, price, and content should be ready 4–6 weeks before. Placing your supply order as you enter November is already late.
• Margin protection: Marketplaces impose a minimum discount rate on some campaigns; before joining, calculate whether that rate pushes you below your floor. If it does, not joining that campaign is also a decision. To make that call, use the framework in the should I join the campaign? article.
• Stock reality: Selling out at the peak is a loss that carries into your post-campaign ranking and reviews; but excess stock sold at a loss also strains the business. Strike the balance by looking at the floor.

Year-end: New Year and the transition

New Year raises demand for gifts, home decor, tech, and food; it is also the time of annual inventory and accounting close. Discounting to clear leftover seasonal stock makes sense, but even here the rule does not change.

• Timing: Gift demand stays strong through December 20; after that, shipping times become critical, so do not push for new orders on a date whose delivery you cannot guarantee.
• Margin protection: Even in a "year-end stock clearance" discount, the goal should be to limit the loss; if you are going to sell below cost, do it as a deliberate liquidation decision, knowing how much you are losing — not by accident.

A 7-item pre-campaign checklist

Before every special day, regardless of the date, run the same list:

1. Calculate the discount floor: for each product, determine the lowest price that protects your minimum margin after all deductions.
2. Lock the floor into your panel: do not let yourself set the campaign price below this floor.
3. Verify stock: place supply orders weeks ahead based on expected demand; keep safety stock on critical items.
4. Read the campaign terms: check whether the minimum discount rate imposed by the marketplace pushes you below your floor.
5. Prepare visuals and descriptions: have the storefront, campaign badge, and product descriptions live in advance.
6. Set aside ad budget: plan sponsored-product / storefront budget around the registration date, not the campaign day.
7. Talk to shipping: settle cutoff times and capacity with your carrier ahead of the busy day.

To automate the first two items of this list, run the campaign discount calculator once for each product; you will see on a single screen which discount rate still leaves a profit and which one breaks the floor.

Three common campaign-calendar mistakes

• Mistaking the official day for the campaign day: Black Friday may be November 27, but the marketplace's registration window closes weeks earlier. Write the registration deadline on your calendar, not the official day.
• Thinking of the discount in percent, forgetting profit in TL: "40% off" sounds like marketing; the real question is how many TL the discounted price leaves after deductions. Percent dazzles; TL decides.
• Joining every campaign: Some campaigns do not carry the margin in your category. Not joining is also a strategy; treating every discount period as an "opportunity you must not miss" erodes margin all year.

Frequently asked questions

Which is the most important e-commerce discount period of 2026?

By revenue, November is far ahead: the week that starts with 11.11 and peaks with Black Friday (Nov 27, 2026) makes the year's highest sales in many categories. But "most important" depends on your category — if you sell mostly gifts, Mother's Day and Valentine's; if you sell food, Ramadan; if you sell kids' products, back to school may matter more to you than November.

Are the campaign dates the same every year?

Fixed civil dates (Feb 14, Apr 23, Oct 29, 11.11, Dec 31) do not change year to year; only the day of week shifts. Days defined as "the Nth Sunday of a month," like Mother's Day and Father's Day, fall on a different date each year. Religious days (Ramadan, the Eids) shift back roughly 10–11 days each year on the astronomical calendar — the religious dates in this article are estimates, so verify the exact ones against the current official calendar.

How should I account for tax when discounting?

The discounted price also includes VAT, and on marketplace sales withholding is applied on the VAT-excluded amount; so as you discount, both your margin and the amount you actually pocket after tax change. All rate, amount, and tax statements in this article are general information; for your own situation, verify the exact figures and current rates from your own panel, official sources, and your accountant. Make the discount decision on a net figure that already includes the tax effect.

Build the calendar, let the system watch the deduction

A good campaign calendar turns discounting from a moment of panic into a planned decision. The most critical piece is the first item of every special day — the margin-safe floor: the discount price should not fall below your minimum margin after all deductions. Verimle, once you track your sales, reads the real deductions of every order (commission, commission VAT, shipping, service and marketing fees, withholding) from the payout breakdown, derives net profit per product, and makes it visible when a campaign price pushes you below your floor. So building the calendar is up to you, and watching the discount floor is up to the system. On the tools side, you can start your preparation with the campaign discount calculator, and firm up the join-or-not decision with the should I join the campaign? and effect of campaign discounts on profit margin articles.

One final note: this calendar is a general framework. Special-day dates, campaign periods, and marketplaces' participation terms change from year to year; for exact campaign dates and terms, check the current campaign calendar in your own marketplace seller panel. When calculating the discount floor, do not skip using the campaign discount calculator. This guide was last reviewed on July 18, 2026.