Ink Cartridge Coupon Codes

Saving on printing supplies should be simple and predictable. Castle Ink offers direct coupon codes and customer discount programs that can be applied at checkout on compatible and remanufactured ink and toner cartridges. These are official store discounts provided by our website — not third-party or expired coupons — and they can be used on most orders to reduce the cost of replacement cartridges.

We regularly provide special savings for larger orders, returning customers, and select groups such as military members and seniors. To use a coupon, enter the code during checkout and the discount will be applied automatically before payment.

If you are purchasing for a business, school, or organization, we can also create custom group discounts and dedicated coupon codes. Our goal is to make replacement printer supplies affordable while still providing warranty protection, returns, and customer support.

Military & Veterans Discount

We proudly support the brave men and women who serve our country. Save 10% on your entire order:
Use coupon code USA at checkout and the discount will be automatically applied.

Sitewide & General Coupon Codes

SAVE10 – Save 10% on all orders over $30 (Limited time)

WEB – Online-only coupon: 10% off your order

Senior Discounts

We’re happy to offer special savings for seniors. Visit our Senior Citizen Discounts page to learn more and claim your offer.

Brand-Specific Ink Coupons

EPSON5 – Save 5% on compatible Epson ink cartridges

CANON15 – Save 15% on Canon ink cartridges

CUSTOM – Save an additional 15% on custom ink cartridges

Please note: HP ink coupon codes cannot be combined with other offers.

Group Discounts & Custom Coupon Codes

Interested in a group discount program, affiliate coupon, or a custom code you can share with customers, employees, or website visitors?

Price Match Promise

Already found a better price elsewhere? Let us know.

We’re always happy to meet or beat competitor pricing on the same product. Simply contact us with the details, and we’ll send you a personal coupon code to make sure you get the best deal possible.