Printer Ink Cost Calculator

 

 

 

Understanding what your printer ink really costs

Printer ink is famously expensive — often quoted as more expensive per ounce than vintage champagne. The reason isn't really the ink itself; it's that printer manufacturers sell printers near or below cost and recover the difference on supplies. Once you've bought the printer, you're locked into their cartridge ecosystem, and the cost adds up quickly.

Cost per page is the metric that actually matters when you're shopping for a printer or deciding whether to switch cartridge brands. A cartridge that costs $40 but prints 600 pages costs you 6.7 cents per page; a cartridge that costs $20 but only prints 200 pages costs you 10 cents per page — substantially more, despite the lower sticker price. This is why the standard-yield cartridge is almost always the worst deal, and why "XL" or "high-yield" versions are usually the better buy: the upfront price is higher, but the cost per page is lower.

What ISO page yield really means

The page yield printed on every cartridge box is calculated under a standardized test defined by the International Organization for Standardization. For color inkjet cartridges that's ISO/IEC 24711 (using the test pages defined in 24712); for monochrome laser, it's ISO/IEC 19752. The test pages are predominantly text at approximately 5% ink coverage of the printable area — roughly what a typical office document with no images uses.

If your real-world printing is mostly text emails, school reports, and shipping labels, the manufacturer's stated yield is realistic. If you print spreadsheets with colored cells, web pages with banners, kids' homework with illustrations, or photos, your actual yield will be lower — sometimes dramatically. A cartridge rated for 300 pages at 5% coverage will produce roughly 150 pages at 10% coverage and around 100 pages at 15%. The coverage selector in the calculator above accounts for this directly.

OEM, compatible, and remanufactured: the cost differences

OEM (original equipment manufacturer) cartridges are the genuine cartridges sold by HP, Canon, Brother, or Epson. Compatible cartridges are new cartridges built by third-party manufacturers to fit the same printers. Remanufactured cartridges are recycled OEM shells refilled and reconditioned for resale.

For most home and small-office users, well-made compatible cartridges produce print quality essentially indistinguishable from OEM for everyday text and color documents, at roughly 50–80% off the OEM price. Remanufactured cartridges save similar amounts and have a smaller environmental footprint because they reuse existing shells. We've written more on the practical differences in Compatible vs. Remanufactured vs. OEM Ink: What's Actually Different, and on the warranty implications in Does Using Compatible Ink Void My Printer's Warranty?

Subscription ink programs

HP Instant Ink is the most prominent printer ink subscription, but Canon, Brother, and Epson all offer similar programs. The pitch is convenient — cartridges arrive automatically, you pay a flat monthly fee — and for some print volumes the math works. For others, it's substantially more expensive than buying compatible cartridges as needed. Plug your monthly subscription cost into the calculator above (as the OEM price, with the program's monthly page allotment as the yield) to compare directly. We've also published the detailed math in HP Instant Ink vs. Compatible Cartridges: The Real Cost Math for 2026.

A worked example

A home user with an HP Envy 6400 series printer who prints 75 pages a month, mostly mixed-color documents at roughly 10% coverage, would spend the following per year:

• Buying OEM HP 67XL cartridges at $66 for a black-plus-tri-color bundle rated for 240 pages of black: about $110 a year in ink at adjusted yields.
• Buying Castle Ink's compatible HP 67XL bundle at $59.95 for the same yields: about $100 a year.
• HP Instant Ink at the 100-pages/month tier ($5.99/month at the time of writing): $71.88 a year if you actually use the full 100 pages, more if you exceed it.

For this user, Instant Ink is genuinely cheaper than buying any cartridges — a real example of where the subscription wins. For someone printing 250 pages a month on the same printer, the math flips entirely, and compatible cartridges become the clear winner. The point of a calculator is to find your specific answer rather than rely on the assumption that any one option is universally best.

Frequently asked questions

How much does printer ink really cost per page?

For a typical home inkjet using high-yield (XL) cartridges, OEM ink runs roughly 6 to 12 cents per page in mixed text-and-color use; compatible cartridges from a reputable seller run roughly 2 to 5 cents per page. Standard-yield cartridges are about twice as expensive per page as their XL equivalents. Laser printers are dramatically cheaper to run — typically under 4 cents per page for monochrome — which is why high-volume offices use lasers despite the higher upfront cost.

Why do cartridges run out so much faster than the rated yield?

Page yields are measured under an ISO test that uses 5% ink coverage on a text-heavy test page. Real printing is usually heavier — 10% is closer to typical mixed use, and photo printing pushes coverage to 25% or more. A cartridge rated for 300 pages at 5% coverage produces around 150 at 10% and around 100 at 15%. Printer maintenance routines (head cleaning cycles) also consume ink that doesn't show up on a printed page; a printer that sits unused for weeks and then runs cleaning cycles can lose meaningful ink to maintenance alone.

Is it cheaper to buy a new printer or to keep buying ink for my old one?

If your current printer works reliably, keeping it is almost always cheaper. New entry-level inkjets ship with starter cartridges (typically 1/3 to 1/2 the rated yield of a normal cartridge), which means the cost-per-page math during your first months on a new printer is much worse than it'll be later. Replacing a working printer to "save money on ink" rarely pays off unless you're switching from inkjet to laser, or from a cartridge-based printer to a refillable tank system.

Are compatible ink cartridges as good as OEM?

For everyday printing — text documents, web pages, school assignments, color reports, basic photos — quality from a reputable compatible brand is essentially indistinguishable from OEM. The difference shows up in two places: archival photo printing (where OEM pigment-based inks have measurable color longevity advantages), and unusually old or unusually new printer models (where compatible cartridge availability and chip compatibility can lag). For roughly 80% of users printing roughly 80% of jobs, compatible cartridges produce equivalent results at a fraction of the cost.

What's the difference between standard-yield and XL cartridges?

The cartridge body and chip are usually identical; the XL version simply has more ink inside. The XL costs perhaps 30–50% more than the standard, but holds 2–3 times the ink. This is why XL cartridges almost always win on cost per page. The exception is if you print so rarely that ink dries out before you finish a cartridge — in which case a smaller standard cartridge that gets used up and replaced more often may actually be the better choice.

Why is HP printer ink so expensive specifically?

HP runs the most aggressive razor-and-blades model of any major printer manufacturer: their consumer printers are sold at low margins, sometimes below cost, and the company recovers the difference on cartridges. HP also pioneered cartridge chips that lock out third-party ink and update firmware to extend that lockout. The practical result is that genuine HP cartridges have some of the highest cost-per-page figures in the industry — and that compatible alternatives are correspondingly attractive when they're available. We dig into the broader market dynamics in Why Is Printer Ink So Expensive?

Will using compatible ink void my printer's warranty?

Not in the United States. The Magnuson-Moss Warranty Act prevents manufacturers from voiding a warranty solely because you used third-party supplies, unless the manufacturer provides those supplies free of charge or can prove the third-party part caused the failure. Manufacturers often imply otherwise in their marketing; the actual law is on the consumer's side. Outside the US, warranty terms vary — check your local consumer protection rules.

How do I know which cartridge fits my printer?

Check the side or front of an existing cartridge in your printer — it'll list the OEM part number (e.g., "HP 67XL", "Canon PG-245", "Brother LC3033"). If you don't have a cartridge to look at, the printer's user manual or the manufacturer's support site will list compatible cartridges. Castle Ink's brand collection pages let you browse cartridges by brand once you know the part number.