Teacher Discount: 15% Off Printer Ink and Toner

Teacher & Educator Discount

15% off all printer ink and toner

For K-12 teachers, college faculty, school staff and homeschool educators. Use code EDUCATOR15 at checkout, or tap here to apply it automatically.

EDUCATOR15

Teachers print a lot: worksheets, lesson plans, handouts, reading packets, certificates and classroom signs. And too often the ink comes out of their own pocket. Castle Ink has sold printer ink and toner since 2005, and we offer every educator 15% off every order. The discount applies to our whole catalog: remanufactured ink cartridges and compatible toner, drums and ink bottles for HP, Canon, Epson, Brother and other printers.

Who qualifies

  • Pre-K and K-12 teachers at public, private and charter schools
  • College and university professors, instructors and adjuncts
  • Substitute teachers, paraprofessionals and teaching aides
  • School administrators, librarians, counselors and support staff
  • Homeschool educators
  • Retired teachers

No ID upload or verification step is needed. We trust you to use the code only if you qualify.

How to use your discount

  1. Find the cartridges for your printer. Our find ink by printer guide lists the right ink or toner for more than 500 models.
  2. Add them to your cart and go to checkout.
  3. Enter EDUCATOR15 in the discount code box. 15% comes off your order before payment. (If you used the auto-apply link, it's already applied.)

The details

  • 15% off your entire order, every order, with no minimum.
  • Free U.S. shipping on orders over $50. Orders under $50 ship for $4.95.
  • Same-day shipping on orders placed by 4 PM ET, Monday to Friday, by USPS (2–5 business days).
  • 100% satisfaction guarantee on every cartridge.
  • The code can't be combined with other discount codes.

Frequently asked questions

Can I use the teacher discount on toner?

Yes. EDUCATOR15 works on everything we sell: ink cartridges, toner, drum units and ink bottles.

Do I need to prove I'm a teacher?

No. There is no verification step. The code is for teachers, school staff and educators.

Can I use it more than once?

Yes. Use it on every order, all school year.

Do you offer pricing for schools, departments or PTAs?

Yes. If you buy ink or toner for a school, department, district office or PTA, contact us and we'll set up group pricing.

Is this the same as the student discount?

No. Students have their own offer on our student discounts page.

Questions about an order or which cartridge fits your printer? Contact us and we'll help. You can also see all our ink cartridge coupon codes, including our military discount and senior discount.