TomatoInk is running a 9% off coupon code that cuts the cost of printer ink cartridges. This code works best for purchases of ink cartridges only, but the page also has other codes and a sale you should compare depending on what you are buying and how much you are spending.
Buying ink cartridges at standard prices. The 9% off coupon code at the top of this page gives you the best savings on ink cartridges. If you are buying combo packs instead, the 8% off combo packs code saves you slightly less. Neither code can be used with the other, so choose based on what is in your cart: the 9% code on cartridges, the 8% code on combo packs.
Smaller orders under $25. If your order of cartridges or combo packs comes to less than $25, use the 9% off code on cartridges (you save more than with the 8% code on combo packs). The $3 off code requires a minimum spend of $25, so it will not apply to smaller baskets.
Orders of $25 or more. On a $25 order of cartridges, the 9% off code saves you $2.25, while the $3 off code saves you $3, making the fixed amount better by about 75 cents. On a $40 order of cartridges, the 9% off code saves you $3.60, which beats the flat $3 off by 60 cents. The 9% code pulls ahead as your order grows. Compare the two on your actual basket size and use whichever leaves the lower total.
Shopping the sale. TomatoInk is running a sale with discounts of up to 80% on selected products. This applies only to items marked as sale stock and cannot be combined with any coupon code. If a product is on sale, calculate the sale price and compare it with what you would pay using one of the coupon codes on the full price. Take whichever option costs less, and remember that you can only use one discount method at checkout.
In the 12 months to October 2026, our team tested 41 TomatoInk codes across 39 offers at checkout. The coupon codes on this page are typical for the brand; the biggest percentage code in that period was 18% off in January 2026, and the sale discount of up to 80% off matches the largest sale TomatoInk ran in the same window.