TeePublic has the 20% off promo code at the top of this page, and it applies to your entire order at checkout, making it the simplest choice for many purchases. The code cannot be combined with other offers, so it is best for full price baskets or when the other active sale discounts on the items you want are smaller than 20%. The 15% off promo code is a fallback when the 20% code is not available.
Very large full price basket If you are buying mostly full price items and your order total is high, use the 20% off promo code. On a CA$200 order, for example, the 20% promo code takes 20% off, leaving CA$160 and saving you CA$40. By comparison the 15% promo code would leave CA$170 and save CA$30, so the 20% code gives the bigger saving.
Single or a few full price tees For a smaller full price purchase the 20% promo code still usually wins. On a CA$40 t shirt, the 20% promo code reduces the price to CA$32, a saving of CA$8, while the 15% promo code would save CA$6 and leave CA$34.
When a specific t shirt is in the 33% off sale The Hydrogen and Cosmic Sound t shirts are marked down by 33% on the website, and that sale price is applied automatically with no code. If the item you want is one of those sale designs, the public 33% off is better than either promo code. For example a CA$30 Hydrogen t shirt at 33% off becomes CA$20.10, a saving of CA$9.90; the 20% promo code on the CA$30 original would leave CA$24 and save CA$6, so take the sale price for that design.
Mixed cart of sale and full price items Because the 20% promo code cannot be used with other offers, you must compare the cart total both ways: the sale prices shown in your cart, or the full price total with the 20% promo code applied. If the combined sale discounts on the items you want average more than 20% overall, the sale total will be lower; if not, use the 20% promo code.
First time shopper or low spend The newsletter signup is available for special offers but is not the page lead and does not replace the promo codes. Sign up if you want occasional emails about promotions, but for an immediate saving on a current purchase choose one of the promo codes or the sale price as above.
Choosing between the offers is simple: calculate the final total both ways and take whichever leaves you paying less. The 20% off promo code at the top of this page is the default pick for full price orders; the 15% promo code only wins if the 20% code is unavailable. The Hydrogen and Cosmic Sound 33% off sale prices beat the codes for those specific items, so use the displayed sale price for them.
Against our records, TeePublic listed six sales and deals in the 12 months to October 2026 and the biggest percentage sale we saw in that window was up to 40% off in August 2026. No team checkout checks are recorded for this brand in the 12 months to October 2026.